/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-BasicCegarLoop.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-10 02:48:37,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 02:48:37,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 02:48:37,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 02:48:37,378 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-BasicCegarLoop.epf [2022-02-10 02:48:37,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 02:48:37,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 02:48:37,404 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 02:48:37,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 02:48:37,405 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 02:48:37,405 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 02:48:37,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 02:48:37,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 02:48:37,406 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 02:48:37,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:48:37,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 02:48:37,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 02:48:37,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 02:48:37,408 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 02:48:37,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 02:48:37,408 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=MCR_WITH_DEPRANKS [2022-02-10 02:48:37,408 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 02:48:37,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 02:48:37,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 02:48:37,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 02:48:37,629 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 02:48:37,629 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 02:48:37,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl [2022-02-10 02:48:37,630 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-dist.wvr.bpl' [2022-02-10 02:48:37,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 02:48:37,646 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 02:48:37,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 02:48:37,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 02:48:37,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 02:48:37,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,663 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 02:48:37,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 02:48:37,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 02:48:37,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 02:48:37,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 02:48:37,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,672 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 02:48:37,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 02:48:37,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 02:48:37,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 02:48:37,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/1) ... [2022-02-10 02:48:37,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 02:48:37,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:48:37,696 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) [2022-02-10 02:48:37,698 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 [2022-02-10 02:48:37,724 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-10 02:48:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-10 02:48:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-10 02:48:37,724 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-10 02:48:37,724 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-10 02:48:37,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-10 02:48:37,725 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 02:48:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 02:48:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 02:48:37,725 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-10 02:48:37,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-10 02:48:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-10 02:48:37,726 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 02:48:37,760 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 02:48:37,761 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 02:48:37,836 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 02:48:37,858 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 02:48:37,858 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-10 02:48:37,859 INFO L202 PluginConnector]: Adding new model mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:48:37 BoogieIcfgContainer [2022-02-10 02:48:37,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 02:48:37,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 02:48:37,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 02:48:37,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 02:48:37,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 02:48:37" (1/2) ... [2022-02-10 02:48:37,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef55aa0 and model type mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 02:48:37, skipping insertion in model container [2022-02-10 02:48:37,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-dist.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 02:48:37" (2/2) ... [2022-02-10 02:48:37,867 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.bpl [2022-02-10 02:48:37,871 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 02:48:37,871 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 02:48:37,871 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 02:48:37,871 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 02:48:37,926 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-02-10 02:48:37,969 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 02:48:37,976 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=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-10 02:48:37,976 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 02:48:37,983 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 33 places, 26 transitions, 76 flow [2022-02-10 02:48:38,010 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 109 states, 108 states have (on average 2.861111111111111) internal successors, (309), 108 states have internal predecessors, (309), 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) [2022-02-10 02:48:52,832 INFO L104 alCausalityReduction]: MaximalCausalityReduction evaluated 1176402 transitions and produced 458096 states. [2022-02-10 02:48:55,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 458096 states, 308145 states have (on average 2.0925440945009655) internal successors, (644807), 458095 states have internal predecessors, (644807), 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) [2022-02-10 02:48:56,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-02-10 02:48:56,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:48:56,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:48:56,099 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:48:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:48:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash 262077514, now seen corresponding path program 1 times [2022-02-10 02:48:56,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:48:56,110 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087307091] [2022-02-10 02:48:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:48:56,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:48:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:48:56,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:48:56,248 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:48:56,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087307091] [2022-02-10 02:48:56,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087307091] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:48:56,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:48:56,252 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-10 02:48:56,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686404775] [2022-02-10 02:48:56,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:48:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-10 02:48:56,268 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:48:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-10 02:48:57,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:49:00,298 INFO L87 Difference]: Start difference. First operand has 458096 states, 308145 states have (on average 2.0925440945009655) internal successors, (644807), 458095 states have internal predecessors, (644807), 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) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-02-10 02:49:08,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:08,737 INFO L93 Difference]: Finished difference Result 458088 states and 644799 transitions. [2022-02-10 02:49:08,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-10 02:49:08,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) Word has length 15 [2022-02-10 02:49:08,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:09,678 INFO L225 Difference]: With dead ends: 458088 [2022-02-10 02:49:09,678 INFO L226 Difference]: Without dead ends: 172739 [2022-02-10 02:49:09,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-10 02:49:09,682 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:09,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172739 states. [2022-02-10 02:49:11,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172739 to 128. [2022-02-10 02:49:11,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.251968503937008) internal successors, (286), 127 states have internal predecessors, (286), 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) [2022-02-10 02:49:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 286 transitions. [2022-02-10 02:49:11,853 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 286 transitions. Word has length 15 [2022-02-10 02:49:11,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:11,853 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 286 transitions. [2022-02-10 02:49:11,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-02-10 02:49:11,854 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 286 transitions. [2022-02-10 02:49:11,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:11,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:11,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:11,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 02:49:11,855 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:11,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:11,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1466075176, now seen corresponding path program 1 times [2022-02-10 02:49:11,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:11,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436746115] [2022-02-10 02:49:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:11,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:11,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:11,912 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:11,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436746115] [2022-02-10 02:49:11,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436746115] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:11,912 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932248398] [2022-02-10 02:49:11,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:11,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:11,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:11,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 02:49:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:11,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2022-02-10 02:49:11,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:12,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:12,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932248398] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:12,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:12,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-02-10 02:49:12,142 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957216495] [2022-02-10 02:49:12,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:12,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:49:12,142 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:49:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:12,143 INFO L87 Difference]: Start difference. First operand 128 states and 286 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-02-10 02:49:12,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:12,266 INFO L93 Difference]: Finished difference Result 224 states and 434 transitions. [2022-02-10 02:49:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 02:49:12,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) Word has length 17 [2022-02-10 02:49:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:12,267 INFO L225 Difference]: With dead ends: 224 [2022-02-10 02:49:12,267 INFO L226 Difference]: Without dead ends: 224 [2022-02-10 02:49:12,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:49:12,268 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 72 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:12,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 56 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:12,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-02-10 02:49:12,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 137. [2022-02-10 02:49:12,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 2.25) internal successors, (306), 136 states have internal predecessors, (306), 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) [2022-02-10 02:49:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 306 transitions. [2022-02-10 02:49:12,273 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 306 transitions. Word has length 17 [2022-02-10 02:49:12,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:12,274 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 306 transitions. [2022-02-10 02:49:12,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 7 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) [2022-02-10 02:49:12,274 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 306 transitions. [2022-02-10 02:49:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:12,274 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:12,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:12,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 02:49:12,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:12,490 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:12,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash -383672408, now seen corresponding path program 1 times [2022-02-10 02:49:12,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:12,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379123212] [2022-02-10 02:49:12,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:12,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:12,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:12,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379123212] [2022-02-10 02:49:12,549 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379123212] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:12,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634520566] [2022-02-10 02:49:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:12,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:12,561 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) [2022-02-10 02:49:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:12,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:12,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:12,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 02:49:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:12,763 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634520566] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:12,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:12,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-02-10 02:49:12,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218836071] [2022-02-10 02:49:12,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:12,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:12,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:12,766 INFO L87 Difference]: Start difference. First operand 137 states and 306 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:13,180 INFO L93 Difference]: Finished difference Result 295 states and 592 transitions. [2022-02-10 02:49:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:49:13,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) Word has length 17 [2022-02-10 02:49:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:13,181 INFO L225 Difference]: With dead ends: 295 [2022-02-10 02:49:13,181 INFO L226 Difference]: Without dead ends: 294 [2022-02-10 02:49:13,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:13,182 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 127 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:13,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 80 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:13,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-02-10 02:49:13,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 148. [2022-02-10 02:49:13,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.2653061224489797) internal successors, (333), 147 states have internal predecessors, (333), 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) [2022-02-10 02:49:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 333 transitions. [2022-02-10 02:49:13,187 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 333 transitions. Word has length 17 [2022-02-10 02:49:13,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:13,187 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 333 transitions. [2022-02-10 02:49:13,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:13,187 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 333 transitions. [2022-02-10 02:49:13,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:13,188 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:13,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:13,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:13,404 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 [2022-02-10 02:49:13,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:13,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:13,405 INFO L85 PathProgramCache]: Analyzing trace with hash -448209364, now seen corresponding path program 1 times [2022-02-10 02:49:13,405 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:13,405 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882301074] [2022-02-10 02:49:13,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:13,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,438 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:13,438 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882301074] [2022-02-10 02:49:13,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882301074] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:49:13,438 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:49:13,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 02:49:13,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087041893] [2022-02-10 02:49:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:13,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 02:49:13,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:13,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 02:49:13,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:49:13,439 INFO L87 Difference]: Start difference. First operand 148 states and 333 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2022-02-10 02:49:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:13,484 INFO L93 Difference]: Finished difference Result 197 states and 414 transitions. [2022-02-10 02:49:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:49:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) Word has length 17 [2022-02-10 02:49:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:13,492 INFO L225 Difference]: With dead ends: 197 [2022-02-10 02:49:13,492 INFO L226 Difference]: Without dead ends: 196 [2022-02-10 02:49:13,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:49:13,495 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:13,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 17 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:13,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-02-10 02:49:13,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 149. [2022-02-10 02:49:13,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.25) internal successors, (333), 148 states have internal predecessors, (333), 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) [2022-02-10 02:49:13,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 333 transitions. [2022-02-10 02:49:13,500 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 333 transitions. Word has length 17 [2022-02-10 02:49:13,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:13,501 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 333 transitions. [2022-02-10 02:49:13,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2022-02-10 02:49:13,501 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 333 transitions. [2022-02-10 02:49:13,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:13,501 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:13,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:13,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 02:49:13,502 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash 274904492, now seen corresponding path program 2 times [2022-02-10 02:49:13,502 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:13,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594714573] [2022-02-10 02:49:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:13,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,580 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:13,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594714573] [2022-02-10 02:49:13,580 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594714573] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:13,580 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838714225] [2022-02-10 02:49:13,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:13,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:13,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:13,582 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) [2022-02-10 02:49:13,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-02-10 02:49:13,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:13,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:13,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:13,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:13,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:13,759 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838714225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:13,760 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:13,760 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-02-10 02:49:13,760 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370169071] [2022-02-10 02:49:13,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:13,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:13,760 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:13,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:13,761 INFO L87 Difference]: Start difference. First operand 149 states and 333 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:13,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:13,932 INFO L93 Difference]: Finished difference Result 296 states and 598 transitions. [2022-02-10 02:49:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 02:49:13,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) Word has length 17 [2022-02-10 02:49:13,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:13,933 INFO L225 Difference]: With dead ends: 296 [2022-02-10 02:49:13,933 INFO L226 Difference]: Without dead ends: 296 [2022-02-10 02:49:13,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:13,934 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 115 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:13,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 57 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:13,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-02-10 02:49:13,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 148. [2022-02-10 02:49:13,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.251700680272109) internal successors, (331), 147 states have internal predecessors, (331), 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) [2022-02-10 02:49:13,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 331 transitions. [2022-02-10 02:49:13,938 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 331 transitions. Word has length 17 [2022-02-10 02:49:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:13,938 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 331 transitions. [2022-02-10 02:49:13,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 331 transitions. [2022-02-10 02:49:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:13,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:13,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:13,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-02-10 02:49:14,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:14,155 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:14,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:14,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1013816724, now seen corresponding path program 3 times [2022-02-10 02:49:14,155 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:14,155 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148407293] [2022-02-10 02:49:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:14,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,216 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:14,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148407293] [2022-02-10 02:49:14,216 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148407293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:14,216 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327363406] [2022-02-10 02:49:14,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:14,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:14,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:14,217 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) [2022-02-10 02:49:14,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-02-10 02:49:14,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 02:49:14,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:14,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:14,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:14,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,410 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327363406] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:14,410 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:14,410 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-02-10 02:49:14,410 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007086680] [2022-02-10 02:49:14,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:14,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:14,411 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:14,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:14,412 INFO L87 Difference]: Start difference. First operand 148 states and 331 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:14,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:14,590 INFO L93 Difference]: Finished difference Result 290 states and 613 transitions. [2022-02-10 02:49:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:14,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) Word has length 17 [2022-02-10 02:49:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:14,592 INFO L225 Difference]: With dead ends: 290 [2022-02-10 02:49:14,592 INFO L226 Difference]: Without dead ends: 290 [2022-02-10 02:49:14,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-02-10 02:49:14,595 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 123 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:14,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 44 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:14,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-02-10 02:49:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 152. [2022-02-10 02:49:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.23841059602649) internal successors, (338), 151 states have internal predecessors, (338), 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) [2022-02-10 02:49:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 338 transitions. [2022-02-10 02:49:14,604 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 338 transitions. Word has length 17 [2022-02-10 02:49:14,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:14,604 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 338 transitions. [2022-02-10 02:49:14,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:14,604 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 338 transitions. [2022-02-10 02:49:14,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:14,605 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:14,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:14,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:14,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:14,820 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:14,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:14,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1994127248, now seen corresponding path program 2 times [2022-02-10 02:49:14,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:14,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644588548] [2022-02-10 02:49:14,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:14,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:14,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,841 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:14,841 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644588548] [2022-02-10 02:49:14,841 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644588548] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:49:14,841 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:49:14,841 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-10 02:49:14,841 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16058195] [2022-02-10 02:49:14,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:14,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 02:49:14,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:14,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 02:49:14,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-02-10 02:49:14,842 INFO L87 Difference]: Start difference. First operand 152 states and 338 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2022-02-10 02:49:14,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:14,883 INFO L93 Difference]: Finished difference Result 210 states and 427 transitions. [2022-02-10 02:49:14,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:49:14,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) Word has length 17 [2022-02-10 02:49:14,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:14,883 INFO L225 Difference]: With dead ends: 210 [2022-02-10 02:49:14,883 INFO L226 Difference]: Without dead ends: 206 [2022-02-10 02:49:14,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:49:14,884 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:14,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 14 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:14,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-02-10 02:49:14,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 152. [2022-02-10 02:49:14,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.19205298013245) internal successors, (331), 151 states have internal predecessors, (331), 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) [2022-02-10 02:49:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 331 transitions. [2022-02-10 02:49:14,887 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 331 transitions. Word has length 17 [2022-02-10 02:49:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:14,887 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 331 transitions. [2022-02-10 02:49:14,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 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) [2022-02-10 02:49:14,887 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 331 transitions. [2022-02-10 02:49:14,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:14,887 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:14,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:14,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 02:49:14,888 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:14,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:14,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2123356328, now seen corresponding path program 2 times [2022-02-10 02:49:14,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:14,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475444164] [2022-02-10 02:49:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:14,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:14,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:14,939 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475444164] [2022-02-10 02:49:14,939 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475444164] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:49:14,939 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:49:14,939 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 02:49:14,939 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938428309] [2022-02-10 02:49:14,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:14,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:49:14,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:14,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:49:14,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:49:14,940 INFO L87 Difference]: Start difference. First operand 152 states and 331 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:14,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:14,984 INFO L93 Difference]: Finished difference Result 195 states and 408 transitions. [2022-02-10 02:49:14,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-02-10 02:49:14,984 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) Word has length 17 [2022-02-10 02:49:14,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:14,985 INFO L225 Difference]: With dead ends: 195 [2022-02-10 02:49:14,985 INFO L226 Difference]: Without dead ends: 195 [2022-02-10 02:49:14,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-02-10 02:49:14,985 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:14,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-02-10 02:49:14,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 144. [2022-02-10 02:49:14,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.174825174825175) internal successors, (311), 143 states have internal predecessors, (311), 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) [2022-02-10 02:49:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 311 transitions. [2022-02-10 02:49:15,095 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 311 transitions. Word has length 17 [2022-02-10 02:49:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:15,095 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 311 transitions. [2022-02-10 02:49:15,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:15,095 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 311 transitions. [2022-02-10 02:49:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:15,095 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:15,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:15,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 02:49:15,096 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:15,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash -992998172, now seen corresponding path program 4 times [2022-02-10 02:49:15,096 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:15,096 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138348558] [2022-02-10 02:49:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:15,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:15,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138348558] [2022-02-10 02:49:15,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138348558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:49:15,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:49:15,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 02:49:15,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488023196] [2022-02-10 02:49:15,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:15,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:49:15,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:15,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:49:15,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:49:15,150 INFO L87 Difference]: Start difference. First operand 144 states and 311 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:15,199 INFO L93 Difference]: Finished difference Result 175 states and 365 transitions. [2022-02-10 02:49:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 02:49:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) Word has length 17 [2022-02-10 02:49:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:15,200 INFO L225 Difference]: With dead ends: 175 [2022-02-10 02:49:15,200 INFO L226 Difference]: Without dead ends: 173 [2022-02-10 02:49:15,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-02-10 02:49:15,201 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:15,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 25 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:15,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-02-10 02:49:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 150. [2022-02-10 02:49:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.1476510067114094) internal successors, (320), 149 states have internal predecessors, (320), 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) [2022-02-10 02:49:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 320 transitions. [2022-02-10 02:49:15,203 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 320 transitions. Word has length 17 [2022-02-10 02:49:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:15,204 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 320 transitions. [2022-02-10 02:49:15,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 320 transitions. [2022-02-10 02:49:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:15,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:15,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:15,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 02:49:15,204 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:15,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:15,205 INFO L85 PathProgramCache]: Analyzing trace with hash 111596520, now seen corresponding path program 5 times [2022-02-10 02:49:15,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:15,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403499683] [2022-02-10 02:49:15,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:15,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:15,245 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403499683] [2022-02-10 02:49:15,245 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403499683] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 02:49:15,245 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 02:49:15,245 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 02:49:15,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806322883] [2022-02-10 02:49:15,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:15,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-02-10 02:49:15,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:15,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-02-10 02:49:15,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-02-10 02:49:15,246 INFO L87 Difference]: Start difference. First operand 150 states and 320 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:15,309 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2022-02-10 02:49:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:49:15,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) Word has length 17 [2022-02-10 02:49:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:15,310 INFO L225 Difference]: With dead ends: 174 [2022-02-10 02:49:15,310 INFO L226 Difference]: Without dead ends: 174 [2022-02-10 02:49:15,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:15,311 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:15,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 25 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-02-10 02:49:15,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 147. [2022-02-10 02:49:15,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.164383561643836) internal successors, (316), 146 states have internal predecessors, (316), 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) [2022-02-10 02:49:15,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 316 transitions. [2022-02-10 02:49:15,313 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 316 transitions. Word has length 17 [2022-02-10 02:49:15,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:15,313 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 316 transitions. [2022-02-10 02:49:15,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 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) [2022-02-10 02:49:15,313 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 316 transitions. [2022-02-10 02:49:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-10 02:49:15,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:15,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:15,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 02:49:15,314 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:15,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:15,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2090037080, now seen corresponding path program 6 times [2022-02-10 02:49:15,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:15,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86658032] [2022-02-10 02:49:15,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:15,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:15,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86658032] [2022-02-10 02:49:15,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86658032] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:15,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212759687] [2022-02-10 02:49:15,359 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:15,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:15,360 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) [2022-02-10 02:49:15,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-02-10 02:49:15,382 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:49:15,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:15,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:15,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:15,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212759687] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:15,509 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:15,509 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2022-02-10 02:49:15,509 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617018814] [2022-02-10 02:49:15,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:15,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:15,509 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:15,510 INFO L87 Difference]: Start difference. First operand 147 states and 316 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:15,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:15,836 INFO L93 Difference]: Finished difference Result 250 states and 524 transitions. [2022-02-10 02:49:15,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-02-10 02:49:15,837 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) Word has length 17 [2022-02-10 02:49:15,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:15,837 INFO L225 Difference]: With dead ends: 250 [2022-02-10 02:49:15,837 INFO L226 Difference]: Without dead ends: 250 [2022-02-10 02:49:15,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:15,838 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 67 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:15,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 68 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-02-10 02:49:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 146. [2022-02-10 02:49:15,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 145 states have (on average 2.1655172413793102) internal successors, (314), 145 states have internal predecessors, (314), 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) [2022-02-10 02:49:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 314 transitions. [2022-02-10 02:49:15,841 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 314 transitions. Word has length 17 [2022-02-10 02:49:15,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:15,841 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 314 transitions. [2022-02-10 02:49:15,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 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) [2022-02-10 02:49:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 314 transitions. [2022-02-10 02:49:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:49:15,841 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:15,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:15,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:16,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-02-10 02:49:16,051 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:16,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1311878150, now seen corresponding path program 1 times [2022-02-10 02:49:16,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:16,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491782293] [2022-02-10 02:49:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:16,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,152 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:16,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491782293] [2022-02-10 02:49:16,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491782293] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:16,152 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030900436] [2022-02-10 02:49:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:16,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:16,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:16,160 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) [2022-02-10 02:49:16,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-02-10 02:49:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:16,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:16,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:16,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030900436] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:16,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:16,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2022-02-10 02:49:16,472 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654843211] [2022-02-10 02:49:16,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:16,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:49:16,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:49:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:16,473 INFO L87 Difference]: Start difference. First operand 146 states and 314 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:16,508 INFO L93 Difference]: Finished difference Result 427 states and 870 transitions. [2022-02-10 02:49:16,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-10 02:49:16,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-02-10 02:49:16,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:16,509 INFO L225 Difference]: With dead ends: 427 [2022-02-10 02:49:16,509 INFO L226 Difference]: Without dead ends: 413 [2022-02-10 02:49:16,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:16,510 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 52 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:16,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 86 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:16,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-02-10 02:49:16,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 281. [2022-02-10 02:49:16,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 2.307142857142857) internal successors, (646), 280 states have internal predecessors, (646), 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) [2022-02-10 02:49:16,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 646 transitions. [2022-02-10 02:49:16,514 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 646 transitions. Word has length 19 [2022-02-10 02:49:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:16,515 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 646 transitions. [2022-02-10 02:49:16,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:16,515 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 646 transitions. [2022-02-10 02:49:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-02-10 02:49:16,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:16,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:16,551 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:16,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:16,732 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:16,732 INFO L85 PathProgramCache]: Analyzing trace with hash 390090442, now seen corresponding path program 2 times [2022-02-10 02:49:16,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:16,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701860539] [2022-02-10 02:49:16,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:16,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:16,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701860539] [2022-02-10 02:49:16,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701860539] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:16,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945918185] [2022-02-10 02:49:16,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:16,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:16,807 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) [2022-02-10 02:49:16,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-02-10 02:49:16,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:16,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:16,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:16,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:16,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:49:17,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945918185] provided 1 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:17,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-02-10 02:49:17,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 8 [2022-02-10 02:49:17,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320878157] [2022-02-10 02:49:17,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 02:49:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-02-10 02:49:17,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-02-10 02:49:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:17,022 INFO L87 Difference]: Start difference. First operand 281 states and 646 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2022-02-10 02:49:17,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:17,043 INFO L93 Difference]: Finished difference Result 450 states and 983 transitions. [2022-02-10 02:49:17,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-02-10 02:49:17,044 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) Word has length 19 [2022-02-10 02:49:17,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:17,045 INFO L225 Difference]: With dead ends: 450 [2022-02-10 02:49:17,045 INFO L226 Difference]: Without dead ends: 443 [2022-02-10 02:49:17,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:17,045 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:17,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 52 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-02-10 02:49:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 395. [2022-02-10 02:49:17,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 2.33248730964467) internal successors, (919), 394 states have internal predecessors, (919), 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) [2022-02-10 02:49:17,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 919 transitions. [2022-02-10 02:49:17,051 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 919 transitions. Word has length 19 [2022-02-10 02:49:17,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:17,051 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 919 transitions. [2022-02-10 02:49:17,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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) [2022-02-10 02:49:17,051 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 919 transitions. [2022-02-10 02:49:17,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:17,052 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:17,052 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:17,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:17,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:17,269 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:17,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:17,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1351608092, now seen corresponding path program 3 times [2022-02-10 02:49:17,269 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:17,269 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576954784] [2022-02-10 02:49:17,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:17,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:17,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576954784] [2022-02-10 02:49:17,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576954784] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:17,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368762037] [2022-02-10 02:49:17,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:17,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:17,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:17,302 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) [2022-02-10 02:49:17,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-02-10 02:49:17,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:17,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:17,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:17,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:17,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:17,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,445 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368762037] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:17,445 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:17,445 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-10 02:49:17,445 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966533283] [2022-02-10 02:49:17,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:17,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:17,446 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:17,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:17,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:17,446 INFO L87 Difference]: Start difference. First operand 395 states and 919 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2022-02-10 02:49:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:17,620 INFO L93 Difference]: Finished difference Result 990 states and 2113 transitions. [2022-02-10 02:49:17,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:17,620 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) Word has length 21 [2022-02-10 02:49:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:17,622 INFO L225 Difference]: With dead ends: 990 [2022-02-10 02:49:17,622 INFO L226 Difference]: Without dead ends: 990 [2022-02-10 02:49:17,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:49:17,623 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 192 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:17,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 74 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:17,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-02-10 02:49:17,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 615. [2022-02-10 02:49:17,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 614 states have (on average 2.462540716612378) internal successors, (1512), 614 states have internal predecessors, (1512), 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) [2022-02-10 02:49:17,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 1512 transitions. [2022-02-10 02:49:17,633 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 1512 transitions. Word has length 21 [2022-02-10 02:49:17,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:17,633 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 1512 transitions. [2022-02-10 02:49:17,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 10 states have internal predecessors, (40), 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) [2022-02-10 02:49:17,633 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 1512 transitions. [2022-02-10 02:49:17,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:17,634 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:17,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:17,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-02-10 02:49:17,861 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,SelfDestructingSolverStorable13 [2022-02-10 02:49:17,862 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:17,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:17,862 INFO L85 PathProgramCache]: Analyzing trace with hash -842575772, now seen corresponding path program 4 times [2022-02-10 02:49:17,862 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:17,862 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501952747] [2022-02-10 02:49:17,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:17,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:17,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:17,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501952747] [2022-02-10 02:49:17,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501952747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:17,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928905861] [2022-02-10 02:49:17,917 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:17,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:17,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:17,919 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) [2022-02-10 02:49:17,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-02-10 02:49:17,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:17,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:17,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:17,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:18,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:18,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:18,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928905861] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:18,133 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:18,133 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-02-10 02:49:18,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944951652] [2022-02-10 02:49:18,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:18,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:18,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:18,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:18,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:18,134 INFO L87 Difference]: Start difference. First operand 615 states and 1512 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:19,156 INFO L93 Difference]: Finished difference Result 1358 states and 2876 transitions. [2022-02-10 02:49:19,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-10 02:49:19,156 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:19,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:19,159 INFO L225 Difference]: With dead ends: 1358 [2022-02-10 02:49:19,159 INFO L226 Difference]: Without dead ends: 1358 [2022-02-10 02:49:19,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=950, Invalid=2832, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:49:19,160 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 306 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:19,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 165 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2022-02-10 02:49:19,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 665. [2022-02-10 02:49:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 664 states have (on average 2.4849397590361444) internal successors, (1650), 664 states have internal predecessors, (1650), 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) [2022-02-10 02:49:19,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 1650 transitions. [2022-02-10 02:49:19,171 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 1650 transitions. Word has length 21 [2022-02-10 02:49:19,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:19,171 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 1650 transitions. [2022-02-10 02:49:19,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:19,171 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 1650 transitions. [2022-02-10 02:49:19,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:19,172 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:19,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:19,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:19,388 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,SelfDestructingSolverStorable14 [2022-02-10 02:49:19,389 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:19,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:19,389 INFO L85 PathProgramCache]: Analyzing trace with hash -907112728, now seen corresponding path program 1 times [2022-02-10 02:49:19,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:19,389 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763837522] [2022-02-10 02:49:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:19,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:19,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:19,429 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:19,429 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:19,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763837522] [2022-02-10 02:49:19,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763837522] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:19,429 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876304358] [2022-02-10 02:49:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:19,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:19,431 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) [2022-02-10 02:49:19,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-02-10 02:49:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:19,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:49:19,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:19,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:19,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:19,676 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876304358] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:19,676 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:19,676 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-02-10 02:49:19,676 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735829577] [2022-02-10 02:49:19,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:19,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:49:19,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:19,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:49:19,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:49:19,677 INFO L87 Difference]: Start difference. First operand 665 states and 1650 transitions. Second operand has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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) [2022-02-10 02:49:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:20,092 INFO L93 Difference]: Finished difference Result 1867 states and 4010 transitions. [2022-02-10 02:49:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 02:49:20,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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) Word has length 21 [2022-02-10 02:49:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:20,096 INFO L225 Difference]: With dead ends: 1867 [2022-02-10 02:49:20,096 INFO L226 Difference]: Without dead ends: 1859 [2022-02-10 02:49:20,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=426, Invalid=1296, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:49:20,097 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 236 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:20,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 142 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1859 states. [2022-02-10 02:49:20,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1859 to 968. [2022-02-10 02:49:20,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 2.5687693898655635) internal successors, (2484), 967 states have internal predecessors, (2484), 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) [2022-02-10 02:49:20,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 2484 transitions. [2022-02-10 02:49:20,118 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 2484 transitions. Word has length 21 [2022-02-10 02:49:20,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:20,119 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 2484 transitions. [2022-02-10 02:49:20,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 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) [2022-02-10 02:49:20,119 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 2484 transitions. [2022-02-10 02:49:20,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:20,120 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:20,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:20,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:20,337 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,SelfDestructingSolverStorable15 [2022-02-10 02:49:20,337 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:20,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:20,337 INFO L85 PathProgramCache]: Analyzing trace with hash 139769656, now seen corresponding path program 2 times [2022-02-10 02:49:20,338 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:20,338 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77937695] [2022-02-10 02:49:20,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:20,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:20,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:20,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77937695] [2022-02-10 02:49:20,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77937695] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:20,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666780613] [2022-02-10 02:49:20,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:20,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:20,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:20,408 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) [2022-02-10 02:49:20,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-02-10 02:49:20,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:20,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:20,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:49:20,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:20,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666780613] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:20,638 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:20,638 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2022-02-10 02:49:20,639 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639101937] [2022-02-10 02:49:20,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:20,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:49:20,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:49:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:49:20,641 INFO L87 Difference]: Start difference. First operand 968 states and 2484 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-02-10 02:49:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:20,963 INFO L93 Difference]: Finished difference Result 1518 states and 3575 transitions. [2022-02-10 02:49:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:49:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) Word has length 21 [2022-02-10 02:49:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:20,966 INFO L225 Difference]: With dead ends: 1518 [2022-02-10 02:49:20,966 INFO L226 Difference]: Without dead ends: 1518 [2022-02-10 02:49:20,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:20,968 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 93 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:20,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 77 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:20,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2022-02-10 02:49:20,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1026. [2022-02-10 02:49:20,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1025 states have (on average 2.5551219512195122) internal successors, (2619), 1025 states have internal predecessors, (2619), 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) [2022-02-10 02:49:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 2619 transitions. [2022-02-10 02:49:20,987 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 2619 transitions. Word has length 21 [2022-02-10 02:49:20,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:20,988 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 2619 transitions. [2022-02-10 02:49:20,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-02-10 02:49:20,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 2619 transitions. [2022-02-10 02:49:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:20,990 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:20,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:21,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:21,208 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,SelfDestructingSolverStorable16 [2022-02-10 02:49:21,208 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:21,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:21,208 INFO L85 PathProgramCache]: Analyzing trace with hash -266564956, now seen corresponding path program 5 times [2022-02-10 02:49:21,208 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:21,208 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611191661] [2022-02-10 02:49:21,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:21,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,261 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:21,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611191661] [2022-02-10 02:49:21,261 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611191661] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:21,261 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855784270] [2022-02-10 02:49:21,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:21,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:21,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:21,262 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) [2022-02-10 02:49:21,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-02-10 02:49:21,295 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:49:21,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:21,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:21,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:21,457 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855784270] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:21,457 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:21,457 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-02-10 02:49:21,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848764714] [2022-02-10 02:49:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:21,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:21,458 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:21,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:21,458 INFO L87 Difference]: Start difference. First operand 1026 states and 2619 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-02-10 02:49:21,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:21,998 INFO L93 Difference]: Finished difference Result 1543 states and 3446 transitions. [2022-02-10 02:49:21,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:49:21,998 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) Word has length 21 [2022-02-10 02:49:21,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:22,001 INFO L225 Difference]: With dead ends: 1543 [2022-02-10 02:49:22,001 INFO L226 Difference]: Without dead ends: 1535 [2022-02-10 02:49:22,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=402, Invalid=1158, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:49:22,002 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 295 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:22,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 136 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:22,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1535 states. [2022-02-10 02:49:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1535 to 1043. [2022-02-10 02:49:22,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1042 states have (on average 2.542226487523992) internal successors, (2649), 1042 states have internal predecessors, (2649), 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) [2022-02-10 02:49:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 2649 transitions. [2022-02-10 02:49:22,018 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 2649 transitions. Word has length 21 [2022-02-10 02:49:22,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:22,018 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 2649 transitions. [2022-02-10 02:49:22,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-02-10 02:49:22,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 2649 transitions. [2022-02-10 02:49:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:22,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:22,020 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:22,038 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:22,233 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,SelfDestructingSolverStorable17 [2022-02-10 02:49:22,233 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:22,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:22,234 INFO L85 PathProgramCache]: Analyzing trace with hash -980025752, now seen corresponding path program 6 times [2022-02-10 02:49:22,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:22,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29143697] [2022-02-10 02:49:22,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:22,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:22,273 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,273 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:22,273 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29143697] [2022-02-10 02:49:22,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29143697] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:22,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231865742] [2022-02-10 02:49:22,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:22,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:22,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:22,275 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) [2022-02-10 02:49:22,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-02-10 02:49:22,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:22,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:22,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:22,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:22,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231865742] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:22,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:22,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-02-10 02:49:22,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119871944] [2022-02-10 02:49:22,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:22,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:22,543 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:22,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:22,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:22,543 INFO L87 Difference]: Start difference. First operand 1043 states and 2649 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:23,382 INFO L93 Difference]: Finished difference Result 2134 states and 4812 transitions. [2022-02-10 02:49:23,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:49:23,382 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:23,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:23,386 INFO L225 Difference]: With dead ends: 2134 [2022-02-10 02:49:23,387 INFO L226 Difference]: Without dead ends: 2134 [2022-02-10 02:49:23,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1040 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=866, Invalid=2326, Unknown=0, NotChecked=0, Total=3192 [2022-02-10 02:49:23,388 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 330 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:23,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [330 Valid, 123 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2134 states. [2022-02-10 02:49:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2134 to 1186. [2022-02-10 02:49:23,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 1185 states have (on average 2.611814345991561) internal successors, (3095), 1185 states have internal predecessors, (3095), 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) [2022-02-10 02:49:23,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 3095 transitions. [2022-02-10 02:49:23,407 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 3095 transitions. Word has length 21 [2022-02-10 02:49:23,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:23,407 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 3095 transitions. [2022-02-10 02:49:23,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:23,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 3095 transitions. [2022-02-10 02:49:23,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:23,409 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:23,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:23,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:23,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:23,622 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:23,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2026220328, now seen corresponding path program 7 times [2022-02-10 02:49:23,622 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:23,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075667656] [2022-02-10 02:49:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:23,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:23,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:23,654 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:23,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075667656] [2022-02-10 02:49:23,654 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075667656] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:23,654 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815105277] [2022-02-10 02:49:23,654 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:23,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:23,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:23,663 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:23,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-02-10 02:49:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:23,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:23,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:23,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:23,865 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815105277] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:23,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:23,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-02-10 02:49:23,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342770701] [2022-02-10 02:49:23,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:23,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:23,866 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:23,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:23,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:23,867 INFO L87 Difference]: Start difference. First operand 1186 states and 3095 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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) [2022-02-10 02:49:24,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:24,581 INFO L93 Difference]: Finished difference Result 1984 states and 4543 transitions. [2022-02-10 02:49:24,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 02:49:24,581 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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) Word has length 21 [2022-02-10 02:49:24,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:24,585 INFO L225 Difference]: With dead ends: 1984 [2022-02-10 02:49:24,585 INFO L226 Difference]: Without dead ends: 1984 [2022-02-10 02:49:24,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=647, Invalid=1609, Unknown=0, NotChecked=0, Total=2256 [2022-02-10 02:49:24,587 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 356 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:24,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 111 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:24,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-02-10 02:49:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1205. [2022-02-10 02:49:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1204 states have (on average 2.5980066445182723) internal successors, (3128), 1204 states have internal predecessors, (3128), 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) [2022-02-10 02:49:24,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 3128 transitions. [2022-02-10 02:49:24,612 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 3128 transitions. Word has length 21 [2022-02-10 02:49:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:24,612 INFO L470 AbstractCegarLoop]: Abstraction has 1205 states and 3128 transitions. [2022-02-10 02:49:24,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 12 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) [2022-02-10 02:49:24,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 3128 transitions. [2022-02-10 02:49:24,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:24,614 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:24,614 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:24,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:24,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:24,831 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:24,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:24,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1045909804, now seen corresponding path program 8 times [2022-02-10 02:49:24,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:24,831 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964695890] [2022-02-10 02:49:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:24,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:24,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964695890] [2022-02-10 02:49:24,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964695890] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:24,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348268661] [2022-02-10 02:49:24,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:24,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:24,862 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) [2022-02-10 02:49:24,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-02-10 02:49:24,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:24,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:24,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:24,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:24,980 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348268661] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:24,980 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:24,980 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-02-10 02:49:24,981 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207509694] [2022-02-10 02:49:24,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:24,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:49:24,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:24,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:49:24,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:24,982 INFO L87 Difference]: Start difference. First operand 1205 states and 3128 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-02-10 02:49:25,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:25,125 INFO L93 Difference]: Finished difference Result 1592 states and 3767 transitions. [2022-02-10 02:49:25,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:25,125 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) Word has length 21 [2022-02-10 02:49:25,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:25,128 INFO L225 Difference]: With dead ends: 1592 [2022-02-10 02:49:25,128 INFO L226 Difference]: Without dead ends: 1587 [2022-02-10 02:49:25,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:49:25,129 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 104 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:25,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 58 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2022-02-10 02:49:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1211. [2022-02-10 02:49:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 2.5809917355371903) internal successors, (3123), 1210 states have internal predecessors, (3123), 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) [2022-02-10 02:49:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 3123 transitions. [2022-02-10 02:49:25,147 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 3123 transitions. Word has length 21 [2022-02-10 02:49:25,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:25,147 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 3123 transitions. [2022-02-10 02:49:25,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 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) [2022-02-10 02:49:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 3123 transitions. [2022-02-10 02:49:25,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:25,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:25,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:25,168 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-02-10 02:49:25,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:25,365 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:25,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2084982696, now seen corresponding path program 9 times [2022-02-10 02:49:25,365 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:25,365 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585579849] [2022-02-10 02:49:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:25,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:25,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:25,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:25,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585579849] [2022-02-10 02:49:25,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585579849] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:25,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039769805] [2022-02-10 02:49:25,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:25,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:25,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:25,400 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) [2022-02-10 02:49:25,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-02-10 02:49:25,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 02:49:25,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:25,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:25,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:25,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:25,583 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039769805] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:25,583 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:25,583 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-02-10 02:49:25,583 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104977401] [2022-02-10 02:49:25,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:25,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:25,583 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:25,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:25,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:25,584 INFO L87 Difference]: Start difference. First operand 1211 states and 3123 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-02-10 02:49:26,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:26,067 INFO L93 Difference]: Finished difference Result 1684 states and 3858 transitions. [2022-02-10 02:49:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-10 02:49:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) Word has length 21 [2022-02-10 02:49:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:26,071 INFO L225 Difference]: With dead ends: 1684 [2022-02-10 02:49:26,071 INFO L226 Difference]: Without dead ends: 1674 [2022-02-10 02:49:26,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=437, Invalid=1285, Unknown=0, NotChecked=0, Total=1722 [2022-02-10 02:49:26,072 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 332 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:26,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 116 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1674 states. [2022-02-10 02:49:26,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1244. [2022-02-10 02:49:26,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 1243 states have (on average 2.564762670957361) internal successors, (3188), 1243 states have internal predecessors, (3188), 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) [2022-02-10 02:49:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 3188 transitions. [2022-02-10 02:49:26,092 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 3188 transitions. Word has length 21 [2022-02-10 02:49:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:26,092 INFO L470 AbstractCegarLoop]: Abstraction has 1244 states and 3188 transitions. [2022-02-10 02:49:26,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 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) [2022-02-10 02:49:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 3188 transitions. [2022-02-10 02:49:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:26,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:26,094 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:26,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:26,310 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,SelfDestructingSolverStorable21 [2022-02-10 02:49:26,311 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:26,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash -571500376, now seen corresponding path program 10 times [2022-02-10 02:49:26,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:26,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258920433] [2022-02-10 02:49:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:26,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:26,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:26,343 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:26,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258920433] [2022-02-10 02:49:26,343 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258920433] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:26,343 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5395423] [2022-02-10 02:49:26,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:26,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:26,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:26,344 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) [2022-02-10 02:49:26,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-02-10 02:49:26,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:26,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:26,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:26,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:26,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:26,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:26,568 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5395423] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:26,568 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:26,568 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-02-10 02:49:26,569 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733751928] [2022-02-10 02:49:26,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:26,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:26,569 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:26,569 INFO L87 Difference]: Start difference. First operand 1244 states and 3188 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2022-02-10 02:49:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:27,465 INFO L93 Difference]: Finished difference Result 1707 states and 3886 transitions. [2022-02-10 02:49:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:49:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) Word has length 21 [2022-02-10 02:49:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:27,469 INFO L225 Difference]: With dead ends: 1707 [2022-02-10 02:49:27,469 INFO L226 Difference]: Without dead ends: 1707 [2022-02-10 02:49:27,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=653, Invalid=1797, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:27,470 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 258 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:27,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 159 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:27,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2022-02-10 02:49:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1253. [2022-02-10 02:49:27,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1252 states have (on average 2.556709265175719) internal successors, (3201), 1252 states have internal predecessors, (3201), 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) [2022-02-10 02:49:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3201 transitions. [2022-02-10 02:49:27,487 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3201 transitions. Word has length 21 [2022-02-10 02:49:27,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:27,487 INFO L470 AbstractCegarLoop]: Abstraction has 1253 states and 3201 transitions. [2022-02-10 02:49:27,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 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) [2022-02-10 02:49:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3201 transitions. [2022-02-10 02:49:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:27,489 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:27,489 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:27,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:27,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:27,704 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash -67552600, now seen corresponding path program 11 times [2022-02-10 02:49:27,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:27,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887039869] [2022-02-10 02:49:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:27,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:27,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:27,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887039869] [2022-02-10 02:49:27,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887039869] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:27,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718934910] [2022-02-10 02:49:27,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:27,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:27,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:27,748 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) [2022-02-10 02:49:27,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-02-10 02:49:27,771 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:49:27,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:27,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:27,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:27,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:27,863 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718934910] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:27,863 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:27,863 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-02-10 02:49:27,863 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745795729] [2022-02-10 02:49:27,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:27,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:49:27,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:49:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:27,864 INFO L87 Difference]: Start difference. First operand 1253 states and 3201 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:27,983 INFO L93 Difference]: Finished difference Result 2290 states and 5460 transitions. [2022-02-10 02:49:27,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:27,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:27,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:28,003 INFO L225 Difference]: With dead ends: 2290 [2022-02-10 02:49:28,003 INFO L226 Difference]: Without dead ends: 2290 [2022-02-10 02:49:28,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:28,007 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 131 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:28,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 63 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:28,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-02-10 02:49:28,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 1603. [2022-02-10 02:49:28,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1602 states have (on average 2.634207240948814) internal successors, (4220), 1602 states have internal predecessors, (4220), 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) [2022-02-10 02:49:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 4220 transitions. [2022-02-10 02:49:28,033 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 4220 transitions. Word has length 21 [2022-02-10 02:49:28,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:28,034 INFO L470 AbstractCegarLoop]: Abstraction has 1603 states and 4220 transitions. [2022-02-10 02:49:28,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 4220 transitions. [2022-02-10 02:49:28,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:28,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:28,036 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:28,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-02-10 02:49:28,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:28,252 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:28,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:28,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1917300184, now seen corresponding path program 12 times [2022-02-10 02:49:28,253 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:28,253 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505641680] [2022-02-10 02:49:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:28,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:28,289 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:28,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505641680] [2022-02-10 02:49:28,289 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505641680] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:28,289 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857169491] [2022-02-10 02:49:28,289 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:28,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:28,290 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) [2022-02-10 02:49:28,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-02-10 02:49:28,313 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-02-10 02:49:28,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:28,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:28,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:28,425 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:28,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:28,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857169491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:28,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:28,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-02-10 02:49:28,461 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168313948] [2022-02-10 02:49:28,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:28,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:28,469 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:28,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:28,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:28,470 INFO L87 Difference]: Start difference. First operand 1603 states and 4220 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:29,030 INFO L93 Difference]: Finished difference Result 2277 states and 5501 transitions. [2022-02-10 02:49:29,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:49:29,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:29,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:29,034 INFO L225 Difference]: With dead ends: 2277 [2022-02-10 02:49:29,034 INFO L226 Difference]: Without dead ends: 2277 [2022-02-10 02:49:29,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=600, Invalid=2052, Unknown=0, NotChecked=0, Total=2652 [2022-02-10 02:49:29,035 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 219 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:29,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 135 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:29,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-02-10 02:49:29,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1634. [2022-02-10 02:49:29,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.6411512553582366) internal successors, (4313), 1633 states have internal predecessors, (4313), 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) [2022-02-10 02:49:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4313 transitions. [2022-02-10 02:49:29,062 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4313 transitions. Word has length 21 [2022-02-10 02:49:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:29,063 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 4313 transitions. [2022-02-10 02:49:29,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4313 transitions. [2022-02-10 02:49:29,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:29,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:29,065 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:29,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:29,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:29,279 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:29,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:29,280 INFO L85 PathProgramCache]: Analyzing trace with hash 767212272, now seen corresponding path program 13 times [2022-02-10 02:49:29,280 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:29,280 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849797021] [2022-02-10 02:49:29,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:29,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:29,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849797021] [2022-02-10 02:49:29,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849797021] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:29,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181246729] [2022-02-10 02:49:29,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:29,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:29,303 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) [2022-02-10 02:49:29,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-02-10 02:49:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:29,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:29,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:29,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:29,408 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:29,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181246729] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:29,409 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:29,409 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 7 [2022-02-10 02:49:29,409 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859570637] [2022-02-10 02:49:29,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:29,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 02:49:29,409 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:29,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 02:49:29,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-02-10 02:49:29,410 INFO L87 Difference]: Start difference. First operand 1634 states and 4313 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:29,480 INFO L93 Difference]: Finished difference Result 2127 states and 5124 transitions. [2022-02-10 02:49:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 02:49:29,480 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:29,482 INFO L225 Difference]: With dead ends: 2127 [2022-02-10 02:49:29,482 INFO L226 Difference]: Without dead ends: 2122 [2022-02-10 02:49:29,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:29,484 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 156 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:29,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 39 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2022-02-10 02:49:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1634. [2022-02-10 02:49:29,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1633 states have (on average 2.6319657072872014) internal successors, (4298), 1633 states have internal predecessors, (4298), 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) [2022-02-10 02:49:29,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 4298 transitions. [2022-02-10 02:49:29,511 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 4298 transitions. Word has length 21 [2022-02-10 02:49:29,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:29,511 INFO L470 AbstractCegarLoop]: Abstraction has 1634 states and 4298 transitions. [2022-02-10 02:49:29,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:29,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 4298 transitions. [2022-02-10 02:49:29,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:29,514 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:29,514 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:29,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:29,728 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,SelfDestructingSolverStorable25 [2022-02-10 02:49:29,729 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:29,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:29,729 INFO L85 PathProgramCache]: Analyzing trace with hash 348573924, now seen corresponding path program 14 times [2022-02-10 02:49:29,730 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:29,730 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240947560] [2022-02-10 02:49:29,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:29,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,782 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:29,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240947560] [2022-02-10 02:49:29,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240947560] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:29,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033205193] [2022-02-10 02:49:29,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:29,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:29,783 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) [2022-02-10 02:49:29,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-02-10 02:49:29,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:29,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:29,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:29,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:29,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033205193] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:29,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:29,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 13 [2022-02-10 02:49:29,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813935990] [2022-02-10 02:49:29,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:29,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:49:29,984 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:29,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:49:29,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:29,985 INFO L87 Difference]: Start difference. First operand 1634 states and 4298 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:30,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:30,421 INFO L93 Difference]: Finished difference Result 1754 states and 4473 transitions. [2022-02-10 02:49:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:49:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:30,424 INFO L225 Difference]: With dead ends: 1754 [2022-02-10 02:49:30,424 INFO L226 Difference]: Without dead ends: 1750 [2022-02-10 02:49:30,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=254, Invalid=868, Unknown=0, NotChecked=0, Total=1122 [2022-02-10 02:49:30,431 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:30,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 125 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:30,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-02-10 02:49:30,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1657. [2022-02-10 02:49:30,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1656 states have (on average 2.623792270531401) internal successors, (4345), 1656 states have internal predecessors, (4345), 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) [2022-02-10 02:49:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 4345 transitions. [2022-02-10 02:49:30,453 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 4345 transitions. Word has length 21 [2022-02-10 02:49:30,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:30,453 INFO L470 AbstractCegarLoop]: Abstraction has 1657 states and 4345 transitions. [2022-02-10 02:49:30,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:30,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 4345 transitions. [2022-02-10 02:49:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:30,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:30,456 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:30,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-02-10 02:49:30,669 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,SelfDestructingSolverStorable26 [2022-02-10 02:49:30,669 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1353324952, now seen corresponding path program 1 times [2022-02-10 02:49:30,669 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:30,669 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368465792] [2022-02-10 02:49:30,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:30,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:30,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368465792] [2022-02-10 02:49:30,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368465792] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:30,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208992795] [2022-02-10 02:49:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:30,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:30,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:30,732 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) [2022-02-10 02:49:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:30,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:30,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:30,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-02-10 02:49:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:30,930 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208992795] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:30,930 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:30,930 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-02-10 02:49:30,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854873643] [2022-02-10 02:49:30,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:30,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:49:30,931 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:30,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:49:30,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:30,931 INFO L87 Difference]: Start difference. First operand 1657 states and 4345 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:31,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:31,379 INFO L93 Difference]: Finished difference Result 1911 states and 4736 transitions. [2022-02-10 02:49:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-10 02:49:31,379 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:31,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:31,382 INFO L225 Difference]: With dead ends: 1911 [2022-02-10 02:49:31,382 INFO L226 Difference]: Without dead ends: 1911 [2022-02-10 02:49:31,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=265, Invalid=925, Unknown=0, NotChecked=0, Total=1190 [2022-02-10 02:49:31,383 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 158 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:31,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 151 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:31,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2022-02-10 02:49:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1701. [2022-02-10 02:49:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1701 states, 1700 states have (on average 2.608235294117647) internal successors, (4434), 1700 states have internal predecessors, (4434), 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) [2022-02-10 02:49:31,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1701 states to 1701 states and 4434 transitions. [2022-02-10 02:49:31,405 INFO L78 Accepts]: Start accepts. Automaton has 1701 states and 4434 transitions. Word has length 21 [2022-02-10 02:49:31,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:31,405 INFO L470 AbstractCegarLoop]: Abstraction has 1701 states and 4434 transitions. [2022-02-10 02:49:31,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:31,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1701 states and 4434 transitions. [2022-02-10 02:49:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:31,408 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:31,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:31,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:31,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-02-10 02:49:31,622 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:31,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:31,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1051169772, now seen corresponding path program 2 times [2022-02-10 02:49:31,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:31,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733018953] [2022-02-10 02:49:31,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:31,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:31,654 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:31,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:31,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733018953] [2022-02-10 02:49:31,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733018953] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:31,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963000833] [2022-02-10 02:49:31,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:31,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:31,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:31,656 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) [2022-02-10 02:49:31,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-02-10 02:49:31,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:31,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:31,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:31,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:31,780 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963000833] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:31,780 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:31,780 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 02:49:31,780 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345059144] [2022-02-10 02:49:31,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:31,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:49:31,781 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:31,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:49:31,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:31,782 INFO L87 Difference]: Start difference. First operand 1701 states and 4434 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-02-10 02:49:31,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:31,883 INFO L93 Difference]: Finished difference Result 2566 states and 6251 transitions. [2022-02-10 02:49:31,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:31,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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) Word has length 21 [2022-02-10 02:49:31,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:31,887 INFO L225 Difference]: With dead ends: 2566 [2022-02-10 02:49:31,887 INFO L226 Difference]: Without dead ends: 2562 [2022-02-10 02:49:31,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:31,888 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 132 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:31,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 40 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:31,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2562 states. [2022-02-10 02:49:31,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2562 to 1976. [2022-02-10 02:49:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1976 states, 1975 states have (on average 2.647594936708861) internal successors, (5229), 1975 states have internal predecessors, (5229), 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) [2022-02-10 02:49:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 5229 transitions. [2022-02-10 02:49:31,940 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 5229 transitions. Word has length 21 [2022-02-10 02:49:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:31,940 INFO L470 AbstractCegarLoop]: Abstraction has 1976 states and 5229 transitions. [2022-02-10 02:49:31,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 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) [2022-02-10 02:49:31,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 5229 transitions. [2022-02-10 02:49:31,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:31,943 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:31,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:31,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:32,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,144 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:32,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:32,144 INFO L85 PathProgramCache]: Analyzing trace with hash 915180216, now seen corresponding path program 3 times [2022-02-10 02:49:32,144 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:32,144 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822102616] [2022-02-10 02:49:32,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:32,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:32,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:32,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:32,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822102616] [2022-02-10 02:49:32,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822102616] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:32,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009992657] [2022-02-10 02:49:32,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:32,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:32,166 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) [2022-02-10 02:49:32,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-02-10 02:49:32,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:32,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:32,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:32,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:32,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:32,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:32,284 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009992657] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:32,284 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:32,284 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2022-02-10 02:49:32,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401560247] [2022-02-10 02:49:32,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:32,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:49:32,286 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:49:32,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:32,286 INFO L87 Difference]: Start difference. First operand 1976 states and 5229 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:32,375 INFO L93 Difference]: Finished difference Result 2813 states and 6841 transitions. [2022-02-10 02:49:32,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:32,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:32,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:32,379 INFO L225 Difference]: With dead ends: 2813 [2022-02-10 02:49:32,379 INFO L226 Difference]: Without dead ends: 2813 [2022-02-10 02:49:32,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:32,390 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 112 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:32,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 54 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 02:49:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2022-02-10 02:49:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 1986. [2022-02-10 02:49:32,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 2.6387909319899245) internal successors, (5238), 1985 states have internal predecessors, (5238), 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) [2022-02-10 02:49:32,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 5238 transitions. [2022-02-10 02:49:32,419 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 5238 transitions. Word has length 21 [2022-02-10 02:49:32,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:32,419 INFO L470 AbstractCegarLoop]: Abstraction has 1986 states and 5238 transitions. [2022-02-10 02:49:32,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 5238 transitions. [2022-02-10 02:49:32,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:32,422 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:32,422 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:32,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:32,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,638 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:32,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash 264648436, now seen corresponding path program 4 times [2022-02-10 02:49:32,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:32,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127048687] [2022-02-10 02:49:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:32,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:32,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:32,680 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:32,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127048687] [2022-02-10 02:49:32,681 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127048687] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:32,681 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623182295] [2022-02-10 02:49:32,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:32,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:32,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:32,697 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:32,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:32,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:32,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:32,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:32,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-02-10 02:49:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:32,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:32,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:32,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623182295] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:32,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:32,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-02-10 02:49:32,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514229756] [2022-02-10 02:49:32,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:32,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:32,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:32,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:32,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:32,912 INFO L87 Difference]: Start difference. First operand 1986 states and 5238 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:33,249 INFO L93 Difference]: Finished difference Result 2122 states and 5437 transitions. [2022-02-10 02:49:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:49:33,249 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:33,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:33,253 INFO L225 Difference]: With dead ends: 2122 [2022-02-10 02:49:33,253 INFO L226 Difference]: Without dead ends: 2118 [2022-02-10 02:49:33,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=635, Unknown=0, NotChecked=0, Total=812 [2022-02-10 02:49:33,254 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 119 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:33,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 117 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2022-02-10 02:49:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1988. [2022-02-10 02:49:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1988 states, 1987 states have (on average 2.6366381479617513) internal successors, (5239), 1987 states have internal predecessors, (5239), 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) [2022-02-10 02:49:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 5239 transitions. [2022-02-10 02:49:33,320 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 5239 transitions. Word has length 21 [2022-02-10 02:49:33,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:33,320 INFO L470 AbstractCegarLoop]: Abstraction has 1988 states and 5239 transitions. [2022-02-10 02:49:33,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 5239 transitions. [2022-02-10 02:49:33,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:33,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:33,323 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:33,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-02-10 02:49:33,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-02-10 02:49:33,530 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:33,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:33,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2080372868, now seen corresponding path program 5 times [2022-02-10 02:49:33,531 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:33,531 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6566205] [2022-02-10 02:49:33,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:33,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,562 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:33,562 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6566205] [2022-02-10 02:49:33,563 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6566205] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:33,563 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020328735] [2022-02-10 02:49:33,563 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:33,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:33,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:33,564 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-02-10 02:49:33,584 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:49:33,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:33,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:33,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:33,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:33,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020328735] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:33,693 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:33,694 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-02-10 02:49:33,694 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273500564] [2022-02-10 02:49:33,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:33,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:33,694 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:33,694 INFO L87 Difference]: Start difference. First operand 1988 states and 5239 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:33,870 INFO L93 Difference]: Finished difference Result 3114 states and 7695 transitions. [2022-02-10 02:49:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-02-10 02:49:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:33,874 INFO L225 Difference]: With dead ends: 3114 [2022-02-10 02:49:33,874 INFO L226 Difference]: Without dead ends: 3112 [2022-02-10 02:49:33,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2022-02-10 02:49:33,875 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:33,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 76 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:33,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3112 states. [2022-02-10 02:49:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3112 to 2381. [2022-02-10 02:49:33,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 2.641596638655462) internal successors, (6287), 2380 states have internal predecessors, (6287), 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) [2022-02-10 02:49:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 6287 transitions. [2022-02-10 02:49:33,904 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 6287 transitions. Word has length 21 [2022-02-10 02:49:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:33,904 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 6287 transitions. [2022-02-10 02:49:33,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 6287 transitions. [2022-02-10 02:49:33,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:33,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:33,908 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:33,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-02-10 02:49:34,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-02-10 02:49:34,124 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:34,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1808259816, now seen corresponding path program 6 times [2022-02-10 02:49:34,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:34,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810378789] [2022-02-10 02:49:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:34,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:34,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810378789] [2022-02-10 02:49:34,166 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810378789] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:34,166 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997123688] [2022-02-10 02:49:34,166 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:34,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:34,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:34,176 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:34,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-02-10 02:49:34,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:34,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:34,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:34,406 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997123688] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:34,406 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:34,406 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-02-10 02:49:34,406 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941515505] [2022-02-10 02:49:34,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:34,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:49:34,406 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:34,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:49:34,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:34,407 INFO L87 Difference]: Start difference. First operand 2381 states and 6287 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:34,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:34,726 INFO L93 Difference]: Finished difference Result 2564 states and 6564 transitions. [2022-02-10 02:49:34,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:49:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:34,730 INFO L225 Difference]: With dead ends: 2564 [2022-02-10 02:49:34,730 INFO L226 Difference]: Without dead ends: 2556 [2022-02-10 02:49:34,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=205, Invalid=725, Unknown=0, NotChecked=0, Total=930 [2022-02-10 02:49:34,731 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 135 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:34,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 95 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-02-10 02:49:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2401. [2022-02-10 02:49:34,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2400 states have (on average 2.6358333333333333) internal successors, (6326), 2400 states have internal predecessors, (6326), 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) [2022-02-10 02:49:34,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 6326 transitions. [2022-02-10 02:49:34,758 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 6326 transitions. Word has length 21 [2022-02-10 02:49:34,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:34,758 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 6326 transitions. [2022-02-10 02:49:34,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:34,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 6326 transitions. [2022-02-10 02:49:34,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:34,761 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:34,761 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:34,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-02-10 02:49:34,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:34,977 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:34,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash -298769556, now seen corresponding path program 7 times [2022-02-10 02:49:34,978 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:34,978 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727329184] [2022-02-10 02:49:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:34,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,009 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:35,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727329184] [2022-02-10 02:49:35,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727329184] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:35,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117135322] [2022-02-10 02:49:35,010 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:35,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:35,011 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:35,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-02-10 02:49:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:35,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:35,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117135322] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:35,170 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:35,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-02-10 02:49:35,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677442155] [2022-02-10 02:49:35,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:35,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:49:35,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:35,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:49:35,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:35,171 INFO L87 Difference]: Start difference. First operand 2401 states and 6326 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:35,638 INFO L93 Difference]: Finished difference Result 2967 states and 7439 transitions. [2022-02-10 02:49:35,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-10 02:49:35,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:35,643 INFO L225 Difference]: With dead ends: 2967 [2022-02-10 02:49:35,643 INFO L226 Difference]: Without dead ends: 2967 [2022-02-10 02:49:35,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=361, Invalid=1199, Unknown=0, NotChecked=0, Total=1560 [2022-02-10 02:49:35,644 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 161 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:35,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 106 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:35,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2022-02-10 02:49:35,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 2418. [2022-02-10 02:49:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 2.6309474555233763) internal successors, (6359), 2417 states have internal predecessors, (6359), 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) [2022-02-10 02:49:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 6359 transitions. [2022-02-10 02:49:35,677 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 6359 transitions. Word has length 21 [2022-02-10 02:49:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:35,677 INFO L470 AbstractCegarLoop]: Abstraction has 2418 states and 6359 transitions. [2022-02-10 02:49:35,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 13 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 6359 transitions. [2022-02-10 02:49:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:35,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:35,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:35,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:35,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,896 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:35,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:35,896 INFO L85 PathProgramCache]: Analyzing trace with hash -573402644, now seen corresponding path program 3 times [2022-02-10 02:49:35,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:35,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236823071] [2022-02-10 02:49:35,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:35,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:35,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:35,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236823071] [2022-02-10 02:49:35,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236823071] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:35,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90328479] [2022-02-10 02:49:35,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:35,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:35,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:35,925 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:35,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-02-10 02:49:35,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-02-10 02:49:35,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:35,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:49:35,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:36,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:36,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:36,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:36,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90328479] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:36,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:36,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-02-10 02:49:36,113 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311488959] [2022-02-10 02:49:36,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:36,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:49:36,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:36,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:49:36,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:49:36,113 INFO L87 Difference]: Start difference. First operand 2418 states and 6359 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-02-10 02:49:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:36,802 INFO L93 Difference]: Finished difference Result 3461 states and 8352 transitions. [2022-02-10 02:49:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-10 02:49:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) Word has length 21 [2022-02-10 02:49:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:36,808 INFO L225 Difference]: With dead ends: 3461 [2022-02-10 02:49:36,808 INFO L226 Difference]: Without dead ends: 3453 [2022-02-10 02:49:36,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1817, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:49:36,810 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 253 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:36,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 121 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:36,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2022-02-10 02:49:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 2526. [2022-02-10 02:49:36,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2526 states, 2525 states have (on average 2.6455445544554457) internal successors, (6680), 2525 states have internal predecessors, (6680), 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) [2022-02-10 02:49:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 6680 transitions. [2022-02-10 02:49:36,851 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 6680 transitions. Word has length 21 [2022-02-10 02:49:36,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:36,851 INFO L470 AbstractCegarLoop]: Abstraction has 2526 states and 6680 transitions. [2022-02-10 02:49:36,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 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) [2022-02-10 02:49:36,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 6680 transitions. [2022-02-10 02:49:36,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:36,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:36,854 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:36,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:37,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:37,070 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1358531152, now seen corresponding path program 15 times [2022-02-10 02:49:37,071 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:37,071 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101314986] [2022-02-10 02:49:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:37,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:37,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:37,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:37,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101314986] [2022-02-10 02:49:37,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101314986] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:37,095 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285565876] [2022-02-10 02:49:37,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:37,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:37,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:37,098 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:37,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-02-10 02:49:37,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:49:37,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:37,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2022-02-10 02:49:37,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:37,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285565876] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:37,193 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:37,193 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-02-10 02:49:37,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783830926] [2022-02-10 02:49:37,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:37,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 02:49:37,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 02:49:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-10 02:49:37,194 INFO L87 Difference]: Start difference. First operand 2526 states and 6680 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:37,334 INFO L93 Difference]: Finished difference Result 3290 states and 8022 transitions. [2022-02-10 02:49:37,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 02:49:37,334 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:37,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:37,339 INFO L225 Difference]: With dead ends: 3290 [2022-02-10 02:49:37,339 INFO L226 Difference]: Without dead ends: 3285 [2022-02-10 02:49:37,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:37,339 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 172 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:37,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 52 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-02-10 02:49:37,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 2540. [2022-02-10 02:49:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2540 states, 2539 states have (on average 2.636471051595116) internal successors, (6694), 2539 states have internal predecessors, (6694), 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) [2022-02-10 02:49:37,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2540 states to 2540 states and 6694 transitions. [2022-02-10 02:49:37,373 INFO L78 Accepts]: Start accepts. Automaton has 2540 states and 6694 transitions. Word has length 21 [2022-02-10 02:49:37,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:37,373 INFO L470 AbstractCegarLoop]: Abstraction has 2540 states and 6694 transitions. [2022-02-10 02:49:37,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:37,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2540 states and 6694 transitions. [2022-02-10 02:49:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:37,376 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:37,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:37,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-02-10 02:49:37,579 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 808073784, now seen corresponding path program 4 times [2022-02-10 02:49:37,579 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:37,579 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167610176] [2022-02-10 02:49:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:37,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:37,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,655 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:37,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167610176] [2022-02-10 02:49:37,655 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167610176] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:37,655 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543590737] [2022-02-10 02:49:37,655 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:37,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:37,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:37,656 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:37,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-02-10 02:49:37,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:37,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:37,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:49:37,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:37,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:37,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:37,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543590737] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:37,911 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:37,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2022-02-10 02:49:37,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84270169] [2022-02-10 02:49:37,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:37,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:49:37,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:49:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:49:37,912 INFO L87 Difference]: Start difference. First operand 2540 states and 6694 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2022-02-10 02:49:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:38,210 INFO L93 Difference]: Finished difference Result 3173 states and 8023 transitions. [2022-02-10 02:49:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-02-10 02:49:38,210 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) Word has length 21 [2022-02-10 02:49:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:38,215 INFO L225 Difference]: With dead ends: 3173 [2022-02-10 02:49:38,215 INFO L226 Difference]: Without dead ends: 3173 [2022-02-10 02:49:38,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:49:38,216 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 122 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:38,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 97 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:38,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2022-02-10 02:49:38,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2522. [2022-02-10 02:49:38,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2522 states, 2521 states have (on average 2.631892106307021) internal successors, (6635), 2521 states have internal predecessors, (6635), 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) [2022-02-10 02:49:38,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2522 states to 2522 states and 6635 transitions. [2022-02-10 02:49:38,246 INFO L78 Accepts]: Start accepts. Automaton has 2522 states and 6635 transitions. Word has length 21 [2022-02-10 02:49:38,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:38,246 INFO L470 AbstractCegarLoop]: Abstraction has 2522 states and 6635 transitions. [2022-02-10 02:49:38,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 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) [2022-02-10 02:49:38,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2522 states and 6635 transitions. [2022-02-10 02:49:38,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:38,249 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:38,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:38,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:38,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-02-10 02:49:38,465 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:38,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:38,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1489463310, now seen corresponding path program 5 times [2022-02-10 02:49:38,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:38,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192214332] [2022-02-10 02:49:38,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:38,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,512 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:38,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192214332] [2022-02-10 02:49:38,512 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192214332] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:38,512 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576572749] [2022-02-10 02:49:38,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:38,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:38,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:38,514 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:38,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-02-10 02:49:38,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:38,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:38,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjunts are in the unsatisfiable core [2022-02-10 02:49:38,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:38,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:38,673 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576572749] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:38,673 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:38,673 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-02-10 02:49:38,673 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644534701] [2022-02-10 02:49:38,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:38,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-10 02:49:38,673 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-10 02:49:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-02-10 02:49:38,673 INFO L87 Difference]: Start difference. First operand 2522 states and 6635 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:39,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:39,153 INFO L93 Difference]: Finished difference Result 3930 states and 9615 transitions. [2022-02-10 02:49:39,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-10 02:49:39,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:39,159 INFO L225 Difference]: With dead ends: 3930 [2022-02-10 02:49:39,159 INFO L226 Difference]: Without dead ends: 3920 [2022-02-10 02:49:39,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=417, Invalid=1223, Unknown=0, NotChecked=0, Total=1640 [2022-02-10 02:49:39,160 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 218 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:39,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 123 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3920 states. [2022-02-10 02:49:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3920 to 2858. [2022-02-10 02:49:39,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2858 states, 2857 states have (on average 2.679733986699335) internal successors, (7656), 2857 states have internal predecessors, (7656), 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) [2022-02-10 02:49:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2858 states to 2858 states and 7656 transitions. [2022-02-10 02:49:39,257 INFO L78 Accepts]: Start accepts. Automaton has 2858 states and 7656 transitions. Word has length 21 [2022-02-10 02:49:39,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:39,257 INFO L470 AbstractCegarLoop]: Abstraction has 2858 states and 7656 transitions. [2022-02-10 02:49:39,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:39,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2858 states and 7656 transitions. [2022-02-10 02:49:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-02-10 02:49:39,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:39,261 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:39,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:39,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-02-10 02:49:39,462 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1507780856, now seen corresponding path program 8 times [2022-02-10 02:49:39,462 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:39,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716149020] [2022-02-10 02:49:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:39,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:39,509 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:39,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716149020] [2022-02-10 02:49:39,509 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716149020] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:39,509 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678423603] [2022-02-10 02:49:39,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:39,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:39,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:39,514 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:39,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-02-10 02:49:39,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:39,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:39,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:39,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:39,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:39,717 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:39,717 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678423603] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:39,717 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:39,717 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2022-02-10 02:49:39,717 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959964199] [2022-02-10 02:49:39,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:39,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:39,718 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:39,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:39,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:39,718 INFO L87 Difference]: Start difference. First operand 2858 states and 7656 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:40,474 INFO L93 Difference]: Finished difference Result 3535 states and 8919 transitions. [2022-02-10 02:49:40,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-10 02:49:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-02-10 02:49:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:40,480 INFO L225 Difference]: With dead ends: 3535 [2022-02-10 02:49:40,481 INFO L226 Difference]: Without dead ends: 3535 [2022-02-10 02:49:40,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=593, Invalid=1957, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:49:40,482 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 181 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:40,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 131 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3535 states. [2022-02-10 02:49:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3535 to 2861. [2022-02-10 02:49:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2860 states have (on average 2.6793706293706294) internal successors, (7663), 2860 states have internal predecessors, (7663), 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) [2022-02-10 02:49:40,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 7663 transitions. [2022-02-10 02:49:40,523 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 7663 transitions. Word has length 21 [2022-02-10 02:49:40,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:40,523 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 7663 transitions. [2022-02-10 02:49:40,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 7663 transitions. [2022-02-10 02:49:40,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:49:40,527 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:40,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:40,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-02-10 02:49:40,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-02-10 02:49:40,743 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:40,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash -652345918, now seen corresponding path program 16 times [2022-02-10 02:49:40,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:40,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459785732] [2022-02-10 02:49:40,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:40,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:40,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:40,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459785732] [2022-02-10 02:49:40,791 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459785732] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:40,791 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617108996] [2022-02-10 02:49:40,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:40,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:40,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:40,792 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:40,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-02-10 02:49:40,813 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:40,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:40,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:49:40,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:40,998 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:40,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:41,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:41,077 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617108996] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:41,077 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:41,077 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-02-10 02:49:41,077 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268455893] [2022-02-10 02:49:41,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:41,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:41,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:41,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:41,078 INFO L87 Difference]: Start difference. First operand 2861 states and 7663 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-02-10 02:49:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:41,195 INFO L93 Difference]: Finished difference Result 3916 states and 10108 transitions. [2022-02-10 02:49:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) Word has length 23 [2022-02-10 02:49:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:41,203 INFO L225 Difference]: With dead ends: 3916 [2022-02-10 02:49:41,203 INFO L226 Difference]: Without dead ends: 3902 [2022-02-10 02:49:41,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:41,204 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 60 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:41,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 317 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3902 states. [2022-02-10 02:49:41,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3902 to 3661. [2022-02-10 02:49:41,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 3660 states have (on average 2.6636612021857924) internal successors, (9749), 3660 states have internal predecessors, (9749), 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) [2022-02-10 02:49:41,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 9749 transitions. [2022-02-10 02:49:41,256 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 9749 transitions. Word has length 23 [2022-02-10 02:49:41,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:41,256 INFO L470 AbstractCegarLoop]: Abstraction has 3661 states and 9749 transitions. [2022-02-10 02:49:41,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-02-10 02:49:41,257 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 9749 transitions. [2022-02-10 02:49:41,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:49:41,262 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:41,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:41,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:41,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-02-10 02:49:41,478 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:41,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:41,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1646109258, now seen corresponding path program 17 times [2022-02-10 02:49:41,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:41,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649643759] [2022-02-10 02:49:41,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:41,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:49:41,529 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:41,529 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649643759] [2022-02-10 02:49:41,529 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649643759] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:41,530 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032467967] [2022-02-10 02:49:41,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:41,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:41,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:41,531 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:41,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-02-10 02:49:41,557 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:49:41,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:41,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:49:41,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:41,738 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:41,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:49:41,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032467967] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:41,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:41,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 10 [2022-02-10 02:49:41,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949257505] [2022-02-10 02:49:41,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:41,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:49:41,825 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:49:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:41,825 INFO L87 Difference]: Start difference. First operand 3661 states and 9749 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-02-10 02:49:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:41,920 INFO L93 Difference]: Finished difference Result 4598 states and 11789 transitions. [2022-02-10 02:49:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:41,921 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) Word has length 23 [2022-02-10 02:49:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:41,928 INFO L225 Difference]: With dead ends: 4598 [2022-02-10 02:49:41,928 INFO L226 Difference]: Without dead ends: 4580 [2022-02-10 02:49:41,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:49:41,928 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 64 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:41,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4580 states. [2022-02-10 02:49:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4580 to 4190. [2022-02-10 02:49:42,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4190 states, 4189 states have (on average 2.669133444736214) internal successors, (11181), 4189 states have internal predecessors, (11181), 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) [2022-02-10 02:49:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4190 states to 4190 states and 11181 transitions. [2022-02-10 02:49:42,050 INFO L78 Accepts]: Start accepts. Automaton has 4190 states and 11181 transitions. Word has length 23 [2022-02-10 02:49:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:42,050 INFO L470 AbstractCegarLoop]: Abstraction has 4190 states and 11181 transitions. [2022-02-10 02:49:42,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 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) [2022-02-10 02:49:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4190 states and 11181 transitions. [2022-02-10 02:49:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-02-10 02:49:42,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:42,057 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:42,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:42,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:42,274 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1953423434, now seen corresponding path program 18 times [2022-02-10 02:49:42,274 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:42,274 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471343851] [2022-02-10 02:49:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:42,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:42,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:42,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471343851] [2022-02-10 02:49:42,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471343851] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:42,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003089723] [2022-02-10 02:49:42,344 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:42,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:42,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:42,345 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:42,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-02-10 02:49:42,378 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:42,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 15 conjunts are in the unsatisfiable core [2022-02-10 02:49:42,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:42,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:49:42,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003089723] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:42,643 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:42,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 4] total 12 [2022-02-10 02:49:42,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315909206] [2022-02-10 02:49:42,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:42,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:49:42,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:49:42,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:49:42,644 INFO L87 Difference]: Start difference. First operand 4190 states and 11181 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 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) [2022-02-10 02:49:42,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:42,796 INFO L93 Difference]: Finished difference Result 4929 states and 12694 transitions. [2022-02-10 02:49:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 02:49:42,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 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) Word has length 23 [2022-02-10 02:49:42,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:42,805 INFO L225 Difference]: With dead ends: 4929 [2022-02-10 02:49:42,806 INFO L226 Difference]: Without dead ends: 4915 [2022-02-10 02:49:42,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:49:42,806 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 88 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:42,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 260 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:42,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4915 states. [2022-02-10 02:49:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4915 to 4637. [2022-02-10 02:49:42,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4637 states, 4636 states have (on average 2.6475409836065573) internal successors, (12274), 4636 states have internal predecessors, (12274), 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) [2022-02-10 02:49:42,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4637 states to 4637 states and 12274 transitions. [2022-02-10 02:49:42,900 INFO L78 Accepts]: Start accepts. Automaton has 4637 states and 12274 transitions. Word has length 23 [2022-02-10 02:49:42,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:42,901 INFO L470 AbstractCegarLoop]: Abstraction has 4637 states and 12274 transitions. [2022-02-10 02:49:42,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 states have internal predecessors, (55), 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) [2022-02-10 02:49:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4637 states and 12274 transitions. [2022-02-10 02:49:42,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:42,908 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:42,908 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:42,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:43,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,123 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:43,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:43,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1769917344, now seen corresponding path program 19 times [2022-02-10 02:49:43,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:43,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466506882] [2022-02-10 02:49:43,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:43,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:43,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466506882] [2022-02-10 02:49:43,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466506882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:43,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853587580] [2022-02-10 02:49:43,167 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:43,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:43,168 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:43,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-02-10 02:49:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:43,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:43,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:43,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:43,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853587580] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:43,361 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:43,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 02:49:43,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615243757] [2022-02-10 02:49:43,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:43,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:49:43,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:43,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:49:43,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:49:43,362 INFO L87 Difference]: Start difference. First operand 4637 states and 12274 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:49:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:43,574 INFO L93 Difference]: Finished difference Result 7650 states and 19202 transitions. [2022-02-10 02:49:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:49:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:49:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:43,590 INFO L225 Difference]: With dead ends: 7650 [2022-02-10 02:49:43,590 INFO L226 Difference]: Without dead ends: 7650 [2022-02-10 02:49:43,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2022-02-10 02:49:43,590 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 211 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:43,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 143 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7650 states. [2022-02-10 02:49:43,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7650 to 5431. [2022-02-10 02:49:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5431 states, 5430 states have (on average 2.673112338858195) internal successors, (14515), 5430 states have internal predecessors, (14515), 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) [2022-02-10 02:49:43,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5431 states to 5431 states and 14515 transitions. [2022-02-10 02:49:43,687 INFO L78 Accepts]: Start accepts. Automaton has 5431 states and 14515 transitions. Word has length 25 [2022-02-10 02:49:43,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:43,687 INFO L470 AbstractCegarLoop]: Abstraction has 5431 states and 14515 transitions. [2022-02-10 02:49:43,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:49:43,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5431 states and 14515 transitions. [2022-02-10 02:49:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:43,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:43,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:43,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:43,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:43,911 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1323705120, now seen corresponding path program 20 times [2022-02-10 02:49:43,912 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:43,912 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316467284] [2022-02-10 02:49:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:43,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:44,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316467284] [2022-02-10 02:49:44,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316467284] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:44,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591238762] [2022-02-10 02:49:44,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:44,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:44,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:44,038 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:44,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-02-10 02:49:44,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:44,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:44,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:44,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:44,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591238762] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:44,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:44,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:49:44,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178304796] [2022-02-10 02:49:44,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:44,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:49:44,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:49:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:44,273 INFO L87 Difference]: Start difference. First operand 5431 states and 14515 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:49:46,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:46,113 INFO L93 Difference]: Finished difference Result 8531 states and 20539 transitions. [2022-02-10 02:49:46,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-10 02:49:46,113 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:49:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:46,130 INFO L225 Difference]: With dead ends: 8531 [2022-02-10 02:49:46,130 INFO L226 Difference]: Without dead ends: 8531 [2022-02-10 02:49:46,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5016 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3030, Invalid=9626, Unknown=0, NotChecked=0, Total=12656 [2022-02-10 02:49:46,133 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 471 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:46,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 283 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:46,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8531 states. [2022-02-10 02:49:46,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8531 to 5459. [2022-02-10 02:49:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 2.6857823378526935) internal successors, (14659), 5458 states have internal predecessors, (14659), 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) [2022-02-10 02:49:46,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 14659 transitions. [2022-02-10 02:49:46,242 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 14659 transitions. Word has length 25 [2022-02-10 02:49:46,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:46,242 INFO L470 AbstractCegarLoop]: Abstraction has 5459 states and 14659 transitions. [2022-02-10 02:49:46,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:49:46,242 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 14659 transitions. [2022-02-10 02:49:46,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:46,250 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:46,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:46,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-02-10 02:49:46,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-02-10 02:49:46,456 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:46,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1259168164, now seen corresponding path program 6 times [2022-02-10 02:49:46,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:46,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215750703] [2022-02-10 02:49:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:46,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:46,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215750703] [2022-02-10 02:49:46,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215750703] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:46,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69727713] [2022-02-10 02:49:46,497 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:46,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:46,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:46,498 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:46,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-02-10 02:49:46,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:49:46,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:46,735 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:46,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69727713] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:46,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:46,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 02:49:46,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333309867] [2022-02-10 02:49:46,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:46,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:49:46,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:46,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:49:46,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:49:46,768 INFO L87 Difference]: Start difference. First operand 5459 states and 14659 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) [2022-02-10 02:49:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:47,926 INFO L93 Difference]: Finished difference Result 12484 states and 31172 transitions. [2022-02-10 02:49:47,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-10 02:49:47,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:49:47,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:47,947 INFO L225 Difference]: With dead ends: 12484 [2022-02-10 02:49:47,947 INFO L226 Difference]: Without dead ends: 12467 [2022-02-10 02:49:47,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1214, Invalid=4638, Unknown=0, NotChecked=0, Total=5852 [2022-02-10 02:49:47,949 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 343 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:47,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 289 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:47,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12467 states. [2022-02-10 02:49:48,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12467 to 7199. [2022-02-10 02:49:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7199 states, 7198 states have (on average 2.7675743262017227) internal successors, (19921), 7198 states have internal predecessors, (19921), 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) [2022-02-10 02:49:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7199 states to 7199 states and 19921 transitions. [2022-02-10 02:49:48,102 INFO L78 Accepts]: Start accepts. Automaton has 7199 states and 19921 transitions. Word has length 25 [2022-02-10 02:49:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:48,102 INFO L470 AbstractCegarLoop]: Abstraction has 7199 states and 19921 transitions. [2022-02-10 02:49:48,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) [2022-02-10 02:49:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 7199 states and 19921 transitions. [2022-02-10 02:49:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:48,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:48,113 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:48,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:48,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-02-10 02:49:48,329 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:48,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:48,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1988916748, now seen corresponding path program 7 times [2022-02-10 02:49:48,329 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:48,329 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596538915] [2022-02-10 02:49:48,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:48,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,366 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:48,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596538915] [2022-02-10 02:49:48,367 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596538915] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:48,367 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439862948] [2022-02-10 02:49:48,367 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:48,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:48,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:48,372 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:48,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-02-10 02:49:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:48,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:49:48,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:48,683 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439862948] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:48,683 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:48,683 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 02:49:48,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331051691] [2022-02-10 02:49:48,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:48,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:49:48,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:49:48,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:49:48,684 INFO L87 Difference]: Start difference. First operand 7199 states and 19921 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:49:49,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:49,924 INFO L93 Difference]: Finished difference Result 14675 states and 36944 transitions. [2022-02-10 02:49:49,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 02:49:49,928 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:49:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:49,954 INFO L225 Difference]: With dead ends: 14675 [2022-02-10 02:49:49,954 INFO L226 Difference]: Without dead ends: 14671 [2022-02-10 02:49:49,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1008, Invalid=3822, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:49:49,956 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 254 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:49,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 335 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:49,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14671 states. [2022-02-10 02:49:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14671 to 6745. [2022-02-10 02:49:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6745 states, 6744 states have (on average 2.7562277580071175) internal successors, (18588), 6744 states have internal predecessors, (18588), 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) [2022-02-10 02:49:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 18588 transitions. [2022-02-10 02:49:50,102 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 18588 transitions. Word has length 25 [2022-02-10 02:49:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:50,102 INFO L470 AbstractCegarLoop]: Abstraction has 6745 states and 18588 transitions. [2022-02-10 02:49:50,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:49:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 18588 transitions. [2022-02-10 02:49:50,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:50,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:50,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:50,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-02-10 02:49:50,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-02-10 02:49:50,327 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:50,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1899715936, now seen corresponding path program 21 times [2022-02-10 02:49:50,328 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:50,328 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68084322] [2022-02-10 02:49:50,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:50,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:50,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68084322] [2022-02-10 02:49:50,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68084322] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:50,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797054774] [2022-02-10 02:49:50,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:49:50,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:50,387 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:50,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-02-10 02:49:50,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:49:50,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:50,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:50,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:50,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797054774] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:50,670 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:50,670 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:49:50,670 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525392899] [2022-02-10 02:49:50,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:50,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:49:50,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:49:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:50,671 INFO L87 Difference]: Start difference. First operand 6745 states and 18588 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:49:51,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:51,929 INFO L93 Difference]: Finished difference Result 9104 states and 22950 transitions. [2022-02-10 02:49:51,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-10 02:49:51,930 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:49:51,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:51,946 INFO L225 Difference]: With dead ends: 9104 [2022-02-10 02:49:51,946 INFO L226 Difference]: Without dead ends: 9096 [2022-02-10 02:49:51,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1288, Invalid=4262, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 02:49:51,948 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 493 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:51,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 228 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:49:51,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9096 states. [2022-02-10 02:49:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9096 to 6935. [2022-02-10 02:49:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6935 states, 6934 states have (on average 2.7422843957311795) internal successors, (19015), 6934 states have internal predecessors, (19015), 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) [2022-02-10 02:49:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 19015 transitions. [2022-02-10 02:49:52,074 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 19015 transitions. Word has length 25 [2022-02-10 02:49:52,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:52,074 INFO L470 AbstractCegarLoop]: Abstraction has 6935 states and 19015 transitions. [2022-02-10 02:49:52,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:49:52,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 19015 transitions. [2022-02-10 02:49:52,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:52,085 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:52,085 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:52,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-02-10 02:49:52,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-02-10 02:49:52,288 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:52,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:52,289 INFO L85 PathProgramCache]: Analyzing trace with hash 93746272, now seen corresponding path program 22 times [2022-02-10 02:49:52,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:52,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988158769] [2022-02-10 02:49:52,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:52,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:52,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988158769] [2022-02-10 02:49:52,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988158769] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:52,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545782740] [2022-02-10 02:49:52,339 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:49:52,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:52,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:52,340 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:52,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-02-10 02:49:52,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:49:52,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:52,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:52,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:52,577 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545782740] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:52,577 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:52,577 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:49:52,577 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435667652] [2022-02-10 02:49:52,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:52,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:49:52,578 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:52,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:49:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:49:52,578 INFO L87 Difference]: Start difference. First operand 6935 states and 19015 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:49:53,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:53,368 INFO L93 Difference]: Finished difference Result 9035 states and 22798 transitions. [2022-02-10 02:49:53,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:49:53,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:49:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:53,384 INFO L225 Difference]: With dead ends: 9035 [2022-02-10 02:49:53,384 INFO L226 Difference]: Without dead ends: 9023 [2022-02-10 02:49:53,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1513 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1133, Invalid=3697, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:49:53,386 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 415 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:53,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [415 Valid, 208 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:49:53,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9023 states. [2022-02-10 02:49:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9023 to 6984. [2022-02-10 02:49:53,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6984 states, 6983 states have (on average 2.7375053701847345) internal successors, (19116), 6983 states have internal predecessors, (19116), 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) [2022-02-10 02:49:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6984 states to 6984 states and 19116 transitions. [2022-02-10 02:49:53,499 INFO L78 Accepts]: Start accepts. Automaton has 6984 states and 19116 transitions. Word has length 25 [2022-02-10 02:49:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:53,500 INFO L470 AbstractCegarLoop]: Abstraction has 6984 states and 19116 transitions. [2022-02-10 02:49:53,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:49:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6984 states and 19116 transitions. [2022-02-10 02:49:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:53,510 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:53,510 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:53,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:53,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:53,723 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:53,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:53,724 INFO L85 PathProgramCache]: Analyzing trace with hash 708602148, now seen corresponding path program 23 times [2022-02-10 02:49:53,724 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:53,724 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672388845] [2022-02-10 02:49:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:53,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:53,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:53,781 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:53,781 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672388845] [2022-02-10 02:49:53,782 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672388845] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:53,782 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382907467] [2022-02-10 02:49:53,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:49:53,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:53,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:53,783 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:53,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-02-10 02:49:53,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:49:53,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:53,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:54,012 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:54,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:54,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [382907467] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:54,064 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:54,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-02-10 02:49:54,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438520415] [2022-02-10 02:49:54,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:54,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:49:54,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:54,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:49:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:54,065 INFO L87 Difference]: Start difference. First operand 6984 states and 19116 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) [2022-02-10 02:49:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:55,537 INFO L93 Difference]: Finished difference Result 12890 states and 32590 transitions. [2022-02-10 02:49:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-10 02:49:55,537 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) Word has length 25 [2022-02-10 02:49:55,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:55,560 INFO L225 Difference]: With dead ends: 12890 [2022-02-10 02:49:55,560 INFO L226 Difference]: Without dead ends: 12890 [2022-02-10 02:49:55,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3912 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2512, Invalid=7790, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 02:49:55,561 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 520 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:55,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 175 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 841 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:55,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2022-02-10 02:49:55,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 8299. [2022-02-10 02:49:55,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8299 states, 8298 states have (on average 2.8123644251626896) internal successors, (23337), 8298 states have internal predecessors, (23337), 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) [2022-02-10 02:49:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8299 states to 8299 states and 23337 transitions. [2022-02-10 02:49:55,734 INFO L78 Accepts]: Start accepts. Automaton has 8299 states and 23337 transitions. Word has length 25 [2022-02-10 02:49:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:55,734 INFO L470 AbstractCegarLoop]: Abstraction has 8299 states and 23337 transitions. [2022-02-10 02:49:55,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) [2022-02-10 02:49:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 8299 states and 23337 transitions. [2022-02-10 02:49:55,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:55,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:55,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:55,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:55,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-02-10 02:49:55,963 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:55,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:55,963 INFO L85 PathProgramCache]: Analyzing trace with hash -580119068, now seen corresponding path program 24 times [2022-02-10 02:49:55,963 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:55,963 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135476385] [2022-02-10 02:49:55,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:55,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:56,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135476385] [2022-02-10 02:49:56,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135476385] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:56,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529645230] [2022-02-10 02:49:56,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:49:56,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:56,024 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:56,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-02-10 02:49:56,047 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:49:56,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:56,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:56,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:56,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529645230] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:56,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:56,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-02-10 02:49:56,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052544332] [2022-02-10 02:49:56,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:56,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:49:56,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:56,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:49:56,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:56,276 INFO L87 Difference]: Start difference. First operand 8299 states and 23337 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 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) [2022-02-10 02:49:57,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:57,744 INFO L93 Difference]: Finished difference Result 12439 states and 32001 transitions. [2022-02-10 02:49:57,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:49:57,745 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 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) Word has length 25 [2022-02-10 02:49:57,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:57,768 INFO L225 Difference]: With dead ends: 12439 [2022-02-10 02:49:57,768 INFO L226 Difference]: Without dead ends: 12436 [2022-02-10 02:49:57,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1815, Invalid=4991, Unknown=0, NotChecked=0, Total=6806 [2022-02-10 02:49:57,769 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 439 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:57,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 187 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:49:57,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12436 states. [2022-02-10 02:49:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12436 to 8059. [2022-02-10 02:49:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8059 states, 8058 states have (on average 2.7903946388682055) internal successors, (22485), 8058 states have internal predecessors, (22485), 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) [2022-02-10 02:49:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8059 states to 8059 states and 22485 transitions. [2022-02-10 02:49:57,944 INFO L78 Accepts]: Start accepts. Automaton has 8059 states and 22485 transitions. Word has length 25 [2022-02-10 02:49:57,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:57,944 INFO L470 AbstractCegarLoop]: Abstraction has 8059 states and 22485 transitions. [2022-02-10 02:49:57,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 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) [2022-02-10 02:49:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8059 states and 22485 transitions. [2022-02-10 02:49:57,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:57,957 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:57,957 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:57,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-02-10 02:49:58,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-02-10 02:49:58,173 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:58,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:58,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1560429592, now seen corresponding path program 25 times [2022-02-10 02:49:58,173 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:58,173 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866457441] [2022-02-10 02:49:58,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:58,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:58,207 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:58,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866457441] [2022-02-10 02:49:58,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866457441] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:58,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472410934] [2022-02-10 02:49:58,207 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:49:58,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:58,209 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:58,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-02-10 02:49:58,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:58,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:49:58,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:58,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472410934] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:58,393 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:58,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-10 02:49:58,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094856694] [2022-02-10 02:49:58,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:58,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:49:58,393 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:49:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:49:58,394 INFO L87 Difference]: Start difference. First operand 8059 states and 22485 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:49:58,584 INFO L93 Difference]: Finished difference Result 9645 states and 25513 transitions. [2022-02-10 02:49:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-02-10 02:49:58,584 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:49:58,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:49:58,602 INFO L225 Difference]: With dead ends: 9645 [2022-02-10 02:49:58,602 INFO L226 Difference]: Without dead ends: 9640 [2022-02-10 02:49:58,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-02-10 02:49:58,602 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 138 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:49:58,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 63 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:49:58,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9640 states. [2022-02-10 02:49:58,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9640 to 7839. [2022-02-10 02:49:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7839 states, 7838 states have (on average 2.78540443990814) internal successors, (21832), 7838 states have internal predecessors, (21832), 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) [2022-02-10 02:49:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7839 states to 7839 states and 21832 transitions. [2022-02-10 02:49:58,738 INFO L78 Accepts]: Start accepts. Automaton has 7839 states and 21832 transitions. Word has length 25 [2022-02-10 02:49:58,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:49:58,738 INFO L470 AbstractCegarLoop]: Abstraction has 7839 states and 21832 transitions. [2022-02-10 02:49:58,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:49:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 7839 states and 21832 transitions. [2022-02-10 02:49:58,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:49:58,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:49:58,750 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:49:58,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-02-10 02:49:58,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-02-10 02:49:58,964 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:49:58,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:49:58,964 INFO L85 PathProgramCache]: Analyzing trace with hash -521356700, now seen corresponding path program 26 times [2022-02-10 02:49:58,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:49:58,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475706314] [2022-02-10 02:49:58,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:49:58,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:49:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:49:59,001 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,001 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:49:59,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475706314] [2022-02-10 02:49:59,001 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475706314] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:49:59,001 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732157594] [2022-02-10 02:49:59,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:49:59,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:49:59,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:49:59,003 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:49:59,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-02-10 02:49:59,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:49:59,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:49:59,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:49:59,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:49:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:49:59,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:49:59,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732157594] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:49:59,279 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:49:59,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-02-10 02:49:59,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56055391] [2022-02-10 02:49:59,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:49:59,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:49:59,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:49:59,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:49:59,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:49:59,280 INFO L87 Difference]: Start difference. First operand 7839 states and 21832 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:00,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:00,124 INFO L93 Difference]: Finished difference Result 10879 states and 28104 transitions. [2022-02-10 02:50:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-10 02:50:00,125 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:00,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:00,144 INFO L225 Difference]: With dead ends: 10879 [2022-02-10 02:50:00,145 INFO L226 Difference]: Without dead ends: 10868 [2022-02-10 02:50:00,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=814, Invalid=2608, Unknown=0, NotChecked=0, Total=3422 [2022-02-10 02:50:00,145 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 400 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:00,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 159 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:00,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2022-02-10 02:50:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 8380. [2022-02-10 02:50:00,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8380 states, 8379 states have (on average 2.79937940088316) internal successors, (23456), 8379 states have internal predecessors, (23456), 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) [2022-02-10 02:50:00,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8380 states to 8380 states and 23456 transitions. [2022-02-10 02:50:00,308 INFO L78 Accepts]: Start accepts. Automaton has 8380 states and 23456 transitions. Word has length 25 [2022-02-10 02:50:00,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:00,308 INFO L470 AbstractCegarLoop]: Abstraction has 8380 states and 23456 transitions. [2022-02-10 02:50:00,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 8380 states and 23456 transitions. [2022-02-10 02:50:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:00,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:00,321 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:00,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:00,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,529 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:00,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:00,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1117127524, now seen corresponding path program 27 times [2022-02-10 02:50:00,530 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:00,530 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413708702] [2022-02-10 02:50:00,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:00,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:00,599 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:00,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413708702] [2022-02-10 02:50:00,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413708702] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:00,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003192271] [2022-02-10 02:50:00,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:00,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:00,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:00,601 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:00,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-02-10 02:50:00,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:50:00,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:00,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:00,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:00,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:00,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:00,770 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003192271] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:00,770 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:00,770 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-02-10 02:50:00,770 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199563267] [2022-02-10 02:50:00,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:00,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:00,770 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:00,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:00,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:00,771 INFO L87 Difference]: Start difference. First operand 8380 states and 23456 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) [2022-02-10 02:50:01,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:01,769 INFO L93 Difference]: Finished difference Result 11019 states and 28307 transitions. [2022-02-10 02:50:01,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:50:01,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:50:01,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:01,790 INFO L225 Difference]: With dead ends: 11019 [2022-02-10 02:50:01,790 INFO L226 Difference]: Without dead ends: 11017 [2022-02-10 02:50:01,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1632, Invalid=4848, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 02:50:01,792 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 389 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 214 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:01,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2022-02-10 02:50:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 8323. [2022-02-10 02:50:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8322 states have (on average 2.7886325402547465) internal successors, (23207), 8322 states have internal predecessors, (23207), 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) [2022-02-10 02:50:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 23207 transitions. [2022-02-10 02:50:01,959 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 23207 transitions. Word has length 25 [2022-02-10 02:50:01,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:01,959 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 23207 transitions. [2022-02-10 02:50:01,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) [2022-02-10 02:50:01,959 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 23207 transitions. [2022-02-10 02:50:01,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:01,972 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:01,972 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:01,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2022-02-10 02:50:02,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:02,188 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:02,188 INFO L85 PathProgramCache]: Analyzing trace with hash 778242148, now seen corresponding path program 28 times [2022-02-10 02:50:02,188 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:02,188 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787869763] [2022-02-10 02:50:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:02,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:02,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787869763] [2022-02-10 02:50:02,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787869763] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:02,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245569596] [2022-02-10 02:50:02,233 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:02,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:02,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:02,234 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:02,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-02-10 02:50:02,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:02,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:02,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:02,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:02,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245569596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:02,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:02,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:50:02,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159753824] [2022-02-10 02:50:02,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:02,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:02,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:02,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:02,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:02,509 INFO L87 Difference]: Start difference. First operand 8323 states and 23207 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:03,321 INFO L93 Difference]: Finished difference Result 10075 states and 26219 transitions. [2022-02-10 02:50:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-10 02:50:03,322 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:03,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:03,344 INFO L225 Difference]: With dead ends: 10075 [2022-02-10 02:50:03,344 INFO L226 Difference]: Without dead ends: 10061 [2022-02-10 02:50:03,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1568 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1184, Invalid=3928, Unknown=0, NotChecked=0, Total=5112 [2022-02-10 02:50:03,359 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 401 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:03,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 182 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10061 states. [2022-02-10 02:50:03,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10061 to 8416. [2022-02-10 02:50:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 8415 states have (on average 2.7830065359477123) internal successors, (23419), 8415 states have internal predecessors, (23419), 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) [2022-02-10 02:50:03,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 23419 transitions. [2022-02-10 02:50:03,527 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 23419 transitions. Word has length 25 [2022-02-10 02:50:03,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:03,527 INFO L470 AbstractCegarLoop]: Abstraction has 8416 states and 23419 transitions. [2022-02-10 02:50:03,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 23419 transitions. [2022-02-10 02:50:03,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:03,540 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:03,540 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:03,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-02-10 02:50:03,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:03,756 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:03,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:03,756 INFO L85 PathProgramCache]: Analyzing trace with hash -891416220, now seen corresponding path program 29 times [2022-02-10 02:50:03,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:03,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366933185] [2022-02-10 02:50:03,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:03,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:03,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:03,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:03,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366933185] [2022-02-10 02:50:03,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366933185] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:03,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117626791] [2022-02-10 02:50:03,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:03,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:03,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:03,820 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:03,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-02-10 02:50:03,854 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:50:03,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:03,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:03,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:04,064 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:04,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:04,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117626791] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:04,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:04,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:50:04,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585290928] [2022-02-10 02:50:04,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:04,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:04,115 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:04,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:04,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:04,116 INFO L87 Difference]: Start difference. First operand 8416 states and 23419 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:05,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:05,580 INFO L93 Difference]: Finished difference Result 10201 states and 26440 transitions. [2022-02-10 02:50:05,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-10 02:50:05,580 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:05,598 INFO L225 Difference]: With dead ends: 10201 [2022-02-10 02:50:05,598 INFO L226 Difference]: Without dead ends: 10182 [2022-02-10 02:50:05,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2644 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1741, Invalid=5741, Unknown=0, NotChecked=0, Total=7482 [2022-02-10 02:50:05,599 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 511 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:05,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 218 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:05,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10182 states. [2022-02-10 02:50:05,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10182 to 8527. [2022-02-10 02:50:05,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8527 states, 8526 states have (on average 2.7742200328407227) internal successors, (23653), 8526 states have internal predecessors, (23653), 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) [2022-02-10 02:50:05,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8527 states to 8527 states and 23653 transitions. [2022-02-10 02:50:05,748 INFO L78 Accepts]: Start accepts. Automaton has 8527 states and 23653 transitions. Word has length 25 [2022-02-10 02:50:05,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:05,748 INFO L470 AbstractCegarLoop]: Abstraction has 8527 states and 23653 transitions. [2022-02-10 02:50:05,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 8527 states and 23653 transitions. [2022-02-10 02:50:05,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:05,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:05,761 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:05,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-02-10 02:50:05,976 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash 747068004, now seen corresponding path program 30 times [2022-02-10 02:50:05,976 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:05,976 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854580902] [2022-02-10 02:50:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:05,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:06,030 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:06,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854580902] [2022-02-10 02:50:06,030 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854580902] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:06,030 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102249596] [2022-02-10 02:50:06,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:06,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:06,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:06,031 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:06,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-02-10 02:50:06,060 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-02-10 02:50:06,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:06,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:06,300 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:06,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:06,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102249596] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:06,362 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:06,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:50:06,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636316027] [2022-02-10 02:50:06,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:06,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:06,362 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:06,363 INFO L87 Difference]: Start difference. First operand 8527 states and 23653 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 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) [2022-02-10 02:50:08,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:08,207 INFO L93 Difference]: Finished difference Result 10304 states and 26678 transitions. [2022-02-10 02:50:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-10 02:50:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:50:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:08,229 INFO L225 Difference]: With dead ends: 10304 [2022-02-10 02:50:08,229 INFO L226 Difference]: Without dead ends: 10304 [2022-02-10 02:50:08,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3430 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2247, Invalid=6683, Unknown=0, NotChecked=0, Total=8930 [2022-02-10 02:50:08,232 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 443 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:08,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 270 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:08,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10304 states. [2022-02-10 02:50:08,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10304 to 8511. [2022-02-10 02:50:08,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 8510 states have (on average 2.7747356051703878) internal successors, (23613), 8510 states have internal predecessors, (23613), 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) [2022-02-10 02:50:08,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 23613 transitions. [2022-02-10 02:50:08,436 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 23613 transitions. Word has length 25 [2022-02-10 02:50:08,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:08,436 INFO L470 AbstractCegarLoop]: Abstraction has 8511 states and 23613 transitions. [2022-02-10 02:50:08,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 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) [2022-02-10 02:50:08,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 23613 transitions. [2022-02-10 02:50:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:08,451 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:08,451 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:08,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:08,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-02-10 02:50:08,663 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:08,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 80719400, now seen corresponding path program 31 times [2022-02-10 02:50:08,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:08,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862465792] [2022-02-10 02:50:08,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:08,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:08,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:08,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:08,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862465792] [2022-02-10 02:50:08,708 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862465792] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:08,708 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466656087] [2022-02-10 02:50:08,708 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:08,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:08,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:08,709 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:08,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-02-10 02:50:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:08,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:50:08,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:08,784 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:08,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:08,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466656087] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:08,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:08,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-02-10 02:50:08,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287529696] [2022-02-10 02:50:08,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:08,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:50:08,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:50:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:50:08,814 INFO L87 Difference]: Start difference. First operand 8511 states and 23613 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2022-02-10 02:50:09,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:09,080 INFO L93 Difference]: Finished difference Result 18946 states and 50018 transitions. [2022-02-10 02:50:09,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-10 02:50:09,080 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:09,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:09,127 INFO L225 Difference]: With dead ends: 18946 [2022-02-10 02:50:09,127 INFO L226 Difference]: Without dead ends: 18946 [2022-02-10 02:50:09,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2022-02-10 02:50:09,128 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 216 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:09,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 107 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18946 states. [2022-02-10 02:50:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18946 to 12811. [2022-02-10 02:50:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12811 states, 12810 states have (on average 2.87416081186573) internal successors, (36818), 12810 states have internal predecessors, (36818), 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) [2022-02-10 02:50:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12811 states to 12811 states and 36818 transitions. [2022-02-10 02:50:09,443 INFO L78 Accepts]: Start accepts. Automaton has 12811 states and 36818 transitions. Word has length 25 [2022-02-10 02:50:09,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:09,443 INFO L470 AbstractCegarLoop]: Abstraction has 12811 states and 36818 transitions. [2022-02-10 02:50:09,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 10 states have internal predecessors, (48), 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) [2022-02-10 02:50:09,443 INFO L276 IsEmpty]: Start isEmpty. Operand 12811 states and 36818 transitions. [2022-02-10 02:50:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:09,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:09,464 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:09,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:09,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-02-10 02:50:09,671 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:09,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1769028184, now seen corresponding path program 32 times [2022-02-10 02:50:09,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:09,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314517368] [2022-02-10 02:50:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:09,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:09,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:09,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314517368] [2022-02-10 02:50:09,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314517368] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:09,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122026916] [2022-02-10 02:50:09,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:09,723 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:09,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:09,728 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:09,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-02-10 02:50:09,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:09,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:09,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:09,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:09,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:09,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:09,978 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122026916] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:09,978 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:09,978 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-02-10 02:50:09,978 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274718930] [2022-02-10 02:50:09,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:09,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:09,978 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:09,978 INFO L87 Difference]: Start difference. First operand 12811 states and 36818 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:50:11,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:11,924 INFO L93 Difference]: Finished difference Result 15293 states and 41771 transitions. [2022-02-10 02:50:11,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-02-10 02:50:11,924 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:50:11,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:11,960 INFO L225 Difference]: With dead ends: 15293 [2022-02-10 02:50:11,961 INFO L226 Difference]: Without dead ends: 15293 [2022-02-10 02:50:11,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3613 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2098, Invalid=7802, Unknown=0, NotChecked=0, Total=9900 [2022-02-10 02:50:11,963 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 322 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:11,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 216 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 967 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:50:11,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15293 states. [2022-02-10 02:50:12,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15293 to 12930. [2022-02-10 02:50:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12930 states, 12929 states have (on average 2.874932322685436) internal successors, (37170), 12929 states have internal predecessors, (37170), 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) [2022-02-10 02:50:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12930 states to 12930 states and 37170 transitions. [2022-02-10 02:50:12,304 INFO L78 Accepts]: Start accepts. Automaton has 12930 states and 37170 transitions. Word has length 25 [2022-02-10 02:50:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:12,304 INFO L470 AbstractCegarLoop]: Abstraction has 12930 states and 37170 transitions. [2022-02-10 02:50:12,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:50:12,304 INFO L276 IsEmpty]: Start isEmpty. Operand 12930 states and 37170 transitions. [2022-02-10 02:50:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:12,331 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:12,331 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:12,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:12,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-02-10 02:50:12,547 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 915484272, now seen corresponding path program 33 times [2022-02-10 02:50:12,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:12,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88339630] [2022-02-10 02:50:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:12,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:12,592 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:12,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88339630] [2022-02-10 02:50:12,593 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88339630] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:12,593 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747248273] [2022-02-10 02:50:12,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:12,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:12,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:12,595 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:12,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-02-10 02:50:12,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-02-10 02:50:12,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:12,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:50:12,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:12,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:12,764 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747248273] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:12,764 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:12,764 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2022-02-10 02:50:12,764 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585712007] [2022-02-10 02:50:12,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:12,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-10 02:50:12,765 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-10 02:50:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-02-10 02:50:12,765 INFO L87 Difference]: Start difference. First operand 12930 states and 37170 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:13,049 INFO L93 Difference]: Finished difference Result 16185 states and 43508 transitions. [2022-02-10 02:50:13,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-10 02:50:13,049 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:50:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:13,094 INFO L225 Difference]: With dead ends: 16185 [2022-02-10 02:50:13,094 INFO L226 Difference]: Without dead ends: 16172 [2022-02-10 02:50:13,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380 [2022-02-10 02:50:13,095 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 169 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:13,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 66 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16172 states. [2022-02-10 02:50:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16172 to 11605. [2022-02-10 02:50:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11605 states, 11604 states have (on average 2.846432264736298) internal successors, (33030), 11604 states have internal predecessors, (33030), 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) [2022-02-10 02:50:13,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11605 states to 11605 states and 33030 transitions. [2022-02-10 02:50:13,416 INFO L78 Accepts]: Start accepts. Automaton has 11605 states and 33030 transitions. Word has length 25 [2022-02-10 02:50:13,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:13,417 INFO L470 AbstractCegarLoop]: Abstraction has 11605 states and 33030 transitions. [2022-02-10 02:50:13,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 9 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:13,417 INFO L276 IsEmpty]: Start isEmpty. Operand 11605 states and 33030 transitions. [2022-02-10 02:50:13,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:13,437 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:13,437 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:13,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2022-02-10 02:50:13,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-02-10 02:50:13,640 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:13,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:13,641 INFO L85 PathProgramCache]: Analyzing trace with hash 496845924, now seen corresponding path program 34 times [2022-02-10 02:50:13,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:13,641 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002244107] [2022-02-10 02:50:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:13,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:13,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:13,700 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:13,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002244107] [2022-02-10 02:50:13,701 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002244107] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:13,701 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208103458] [2022-02-10 02:50:13,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:13,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:13,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:13,702 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:13,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-02-10 02:50:13,726 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:13,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:13,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:13,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:13,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:13,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:14,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208103458] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:14,005 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:14,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-02-10 02:50:14,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80747300] [2022-02-10 02:50:14,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:14,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:14,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:14,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:14,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:14,006 INFO L87 Difference]: Start difference. First operand 11605 states and 33030 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:14,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:14,922 INFO L93 Difference]: Finished difference Result 13118 states and 35939 transitions. [2022-02-10 02:50:14,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 02:50:14,922 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:14,952 INFO L225 Difference]: With dead ends: 13118 [2022-02-10 02:50:14,952 INFO L226 Difference]: Without dead ends: 13112 [2022-02-10 02:50:14,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=707, Invalid=2263, Unknown=0, NotChecked=0, Total=2970 [2022-02-10 02:50:14,975 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 219 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:14,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 170 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:14,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13112 states. [2022-02-10 02:50:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13112 to 11850. [2022-02-10 02:50:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11850 states, 11849 states have (on average 2.8446282386699298) internal successors, (33706), 11849 states have internal predecessors, (33706), 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) [2022-02-10 02:50:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11850 states to 11850 states and 33706 transitions. [2022-02-10 02:50:15,219 INFO L78 Accepts]: Start accepts. Automaton has 11850 states and 33706 transitions. Word has length 25 [2022-02-10 02:50:15,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:15,219 INFO L470 AbstractCegarLoop]: Abstraction has 11850 states and 33706 transitions. [2022-02-10 02:50:15,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:15,219 INFO L276 IsEmpty]: Start isEmpty. Operand 11850 states and 33706 transitions. [2022-02-10 02:50:15,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:15,238 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:15,238 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:15,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-02-10 02:50:15,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-02-10 02:50:15,452 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:15,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1909902692, now seen corresponding path program 35 times [2022-02-10 02:50:15,452 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:15,452 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016331037] [2022-02-10 02:50:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:15,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,491 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:15,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016331037] [2022-02-10 02:50:15,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016331037] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:15,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294060138] [2022-02-10 02:50:15,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:15,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:15,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:15,493 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:15,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-02-10 02:50:15,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:50:15,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:15,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:15,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:15,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294060138] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:15,814 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:15,814 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-02-10 02:50:15,814 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652830781] [2022-02-10 02:50:15,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:15,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:15,814 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:15,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:15,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:15,815 INFO L87 Difference]: Start difference. First operand 11850 states and 33706 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:17,018 INFO L93 Difference]: Finished difference Result 13161 states and 36095 transitions. [2022-02-10 02:50:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:50:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:17,056 INFO L225 Difference]: With dead ends: 13161 [2022-02-10 02:50:17,056 INFO L226 Difference]: Without dead ends: 13155 [2022-02-10 02:50:17,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1088, Invalid=3468, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:17,058 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 245 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:17,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 185 Invalid, 763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:17,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13155 states. [2022-02-10 02:50:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13155 to 12209. [2022-02-10 02:50:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12209 states, 12208 states have (on average 2.831913499344692) internal successors, (34572), 12208 states have internal predecessors, (34572), 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) [2022-02-10 02:50:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12209 states to 12209 states and 34572 transitions. [2022-02-10 02:50:17,402 INFO L78 Accepts]: Start accepts. Automaton has 12209 states and 34572 transitions. Word has length 25 [2022-02-10 02:50:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:17,402 INFO L470 AbstractCegarLoop]: Abstraction has 12209 states and 34572 transitions. [2022-02-10 02:50:17,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 12209 states and 34572 transitions. [2022-02-10 02:50:17,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:17,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:17,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:17,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-02-10 02:50:17,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:17,641 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:17,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:17,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1945950500, now seen corresponding path program 8 times [2022-02-10 02:50:17,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:17,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949626725] [2022-02-10 02:50:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:17,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:17,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:17,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949626725] [2022-02-10 02:50:17,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949626725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:17,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031901711] [2022-02-10 02:50:17,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:17,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:17,707 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:17,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-02-10 02:50:17,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:17,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:17,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:17,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:17,925 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:17,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:17,982 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031901711] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:17,982 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:17,982 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:50:17,982 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682399424] [2022-02-10 02:50:17,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:17,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:17,982 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:17,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:17,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:17,983 INFO L87 Difference]: Start difference. First operand 12209 states and 34572 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:50:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:19,258 INFO L93 Difference]: Finished difference Result 13544 states and 36848 transitions. [2022-02-10 02:50:19,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:50:19,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:50:19,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:19,292 INFO L225 Difference]: With dead ends: 13544 [2022-02-10 02:50:19,292 INFO L226 Difference]: Without dead ends: 13544 [2022-02-10 02:50:19,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1514 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1140, Invalid=3416, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:19,293 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 298 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:19,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 208 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13544 states. [2022-02-10 02:50:19,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13544 to 12433. [2022-02-10 02:50:19,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12433 states, 12432 states have (on average 2.8202220077220077) internal successors, (35061), 12432 states have internal predecessors, (35061), 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) [2022-02-10 02:50:19,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12433 states to 12433 states and 35061 transitions. [2022-02-10 02:50:19,628 INFO L78 Accepts]: Start accepts. Automaton has 12433 states and 35061 transitions. Word has length 25 [2022-02-10 02:50:19,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:19,628 INFO L470 AbstractCegarLoop]: Abstraction has 12433 states and 35061 transitions. [2022-02-10 02:50:19,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:50:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 12433 states and 35061 transitions. [2022-02-10 02:50:19,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:19,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:19,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:19,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-02-10 02:50:19,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:19,871 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:19,872 INFO L85 PathProgramCache]: Analyzing trace with hash 55477928, now seen corresponding path program 9 times [2022-02-10 02:50:19,872 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:19,872 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908391452] [2022-02-10 02:50:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:19,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:19,928 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:19,928 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:19,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908391452] [2022-02-10 02:50:19,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908391452] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:19,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286394918] [2022-02-10 02:50:19,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:19,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:19,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:19,930 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:19,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-02-10 02:50:19,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:50:19,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:19,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:19,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:20,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:20,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:20,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:20,214 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286394918] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:20,214 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:20,214 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-02-10 02:50:20,214 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843307615] [2022-02-10 02:50:20,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:20,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:20,215 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:20,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:20,215 INFO L87 Difference]: Start difference. First operand 12433 states and 35061 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) [2022-02-10 02:50:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:21,569 INFO L93 Difference]: Finished difference Result 30251 states and 80441 transitions. [2022-02-10 02:50:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-10 02:50:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:50:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:21,661 INFO L225 Difference]: With dead ends: 30251 [2022-02-10 02:50:21,661 INFO L226 Difference]: Without dead ends: 30226 [2022-02-10 02:50:21,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1053, Invalid=3503, Unknown=0, NotChecked=0, Total=4556 [2022-02-10 02:50:21,662 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 385 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:21,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 267 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:21,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30226 states. [2022-02-10 02:50:22,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30226 to 16003. [2022-02-10 02:50:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16003 states, 16002 states have (on average 2.8773903262092237) internal successors, (46044), 16002 states have internal predecessors, (46044), 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) [2022-02-10 02:50:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16003 states to 16003 states and 46044 transitions. [2022-02-10 02:50:22,274 INFO L78 Accepts]: Start accepts. Automaton has 16003 states and 46044 transitions. Word has length 25 [2022-02-10 02:50:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:22,275 INFO L470 AbstractCegarLoop]: Abstraction has 16003 states and 46044 transitions. [2022-02-10 02:50:22,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 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) [2022-02-10 02:50:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 16003 states and 46044 transitions. [2022-02-10 02:50:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:22,306 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:22,306 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:22,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:22,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,514 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:22,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:22,514 INFO L85 PathProgramCache]: Analyzing trace with hash -80511628, now seen corresponding path program 10 times [2022-02-10 02:50:22,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:22,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393049818] [2022-02-10 02:50:22,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:22,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:22,578 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:22,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393049818] [2022-02-10 02:50:22,578 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393049818] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:22,578 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201131492] [2022-02-10 02:50:22,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:22,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:22,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:22,592 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:22,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-02-10 02:50:22,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:22,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:22,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:22,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:22,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:22,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:22,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201131492] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:22,902 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:22,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:50:22,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780571011] [2022-02-10 02:50:22,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:22,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:22,903 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:22,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:22,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:22,906 INFO L87 Difference]: Start difference. First operand 16003 states and 46044 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:24,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:24,183 INFO L93 Difference]: Finished difference Result 36442 states and 96097 transitions. [2022-02-10 02:50:24,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 02:50:24,184 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:24,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:24,295 INFO L225 Difference]: With dead ends: 36442 [2022-02-10 02:50:24,296 INFO L226 Difference]: Without dead ends: 36437 [2022-02-10 02:50:24,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=867, Invalid=2673, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:50:24,296 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 378 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:24,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 248 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:24,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36437 states. [2022-02-10 02:50:24,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36437 to 21018. [2022-02-10 02:50:24,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21018 states, 21017 states have (on average 2.8762430413474807) internal successors, (60450), 21017 states have internal predecessors, (60450), 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) [2022-02-10 02:50:24,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21018 states to 21018 states and 60450 transitions. [2022-02-10 02:50:24,942 INFO L78 Accepts]: Start accepts. Automaton has 21018 states and 60450 transitions. Word has length 25 [2022-02-10 02:50:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:24,942 INFO L470 AbstractCegarLoop]: Abstraction has 21018 states and 60450 transitions. [2022-02-10 02:50:24,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:24,942 INFO L276 IsEmpty]: Start isEmpty. Operand 21018 states and 60450 transitions. [2022-02-10 02:50:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:24,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:24,981 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:24,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:25,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-02-10 02:50:25,198 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:25,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:25,198 INFO L85 PathProgramCache]: Analyzing trace with hash -731043408, now seen corresponding path program 11 times [2022-02-10 02:50:25,199 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:25,199 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804410720] [2022-02-10 02:50:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:25,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:25,241 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:25,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804410720] [2022-02-10 02:50:25,241 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804410720] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:25,241 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494225456] [2022-02-10 02:50:25,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:25,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:25,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:25,243 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:25,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-02-10 02:50:25,267 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-02-10 02:50:25,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:25,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:25,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:25,464 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:25,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:25,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494225456] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:25,514 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:25,514 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-02-10 02:50:25,514 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661591528] [2022-02-10 02:50:25,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:25,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:25,514 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:25,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:25,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:25,514 INFO L87 Difference]: Start difference. First operand 21018 states and 60450 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:26,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:26,487 INFO L93 Difference]: Finished difference Result 22087 states and 62160 transitions. [2022-02-10 02:50:26,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-10 02:50:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:26,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:26,558 INFO L225 Difference]: With dead ends: 22087 [2022-02-10 02:50:26,558 INFO L226 Difference]: Without dead ends: 22075 [2022-02-10 02:50:26,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1086 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=810, Invalid=2730, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:50:26,560 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 279 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:26,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 171 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22075 states. [2022-02-10 02:50:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22075 to 20929. [2022-02-10 02:50:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20929 states, 20928 states have (on average 2.879539373088685) internal successors, (60263), 20928 states have internal predecessors, (60263), 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) [2022-02-10 02:50:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20929 states to 20929 states and 60263 transitions. [2022-02-10 02:50:27,041 INFO L78 Accepts]: Start accepts. Automaton has 20929 states and 60263 transitions. Word has length 25 [2022-02-10 02:50:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:27,041 INFO L470 AbstractCegarLoop]: Abstraction has 20929 states and 60263 transitions. [2022-02-10 02:50:27,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:27,041 INFO L276 IsEmpty]: Start isEmpty. Operand 20929 states and 60263 transitions. [2022-02-10 02:50:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:27,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:27,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:27,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:27,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2022-02-10 02:50:27,291 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:27,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:27,292 INFO L85 PathProgramCache]: Analyzing trace with hash 812567972, now seen corresponding path program 12 times [2022-02-10 02:50:27,292 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:27,292 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175877325] [2022-02-10 02:50:27,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:27,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:27,348 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:27,348 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175877325] [2022-02-10 02:50:27,348 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175877325] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:27,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660137363] [2022-02-10 02:50:27,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:27,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:27,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:27,350 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:27,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-02-10 02:50:27,372 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:50:27,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:27,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:27,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:27,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:27,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660137363] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:27,624 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:27,624 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2022-02-10 02:50:27,624 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953981345] [2022-02-10 02:50:27,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:27,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:27,625 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:27,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:27,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:27,625 INFO L87 Difference]: Start difference. First operand 20929 states and 60263 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:28,471 INFO L93 Difference]: Finished difference Result 22122 states and 62240 transitions. [2022-02-10 02:50:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-10 02:50:28,471 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:28,535 INFO L225 Difference]: With dead ends: 22122 [2022-02-10 02:50:28,535 INFO L226 Difference]: Without dead ends: 22108 [2022-02-10 02:50:28,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 887 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=660, Invalid=2420, Unknown=0, NotChecked=0, Total=3080 [2022-02-10 02:50:28,536 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 291 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:28,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 217 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:28,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22108 states. [2022-02-10 02:50:28,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22108 to 20924. [2022-02-10 02:50:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20924 states, 20923 states have (on average 2.8783635233953064) internal successors, (60224), 20923 states have internal predecessors, (60224), 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) [2022-02-10 02:50:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20924 states to 20924 states and 60224 transitions. [2022-02-10 02:50:29,036 INFO L78 Accepts]: Start accepts. Automaton has 20924 states and 60224 transitions. Word has length 25 [2022-02-10 02:50:29,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:29,036 INFO L470 AbstractCegarLoop]: Abstraction has 20924 states and 60224 transitions. [2022-02-10 02:50:29,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 20924 states and 60224 transitions. [2022-02-10 02:50:29,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:29,075 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:29,076 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:29,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-02-10 02:50:29,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:29,281 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash 259338492, now seen corresponding path program 13 times [2022-02-10 02:50:29,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:29,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274311104] [2022-02-10 02:50:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:29,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:29,337 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:29,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274311104] [2022-02-10 02:50:29,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274311104] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:29,337 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26572849] [2022-02-10 02:50:29,337 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:29,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:29,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:29,340 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:29,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-02-10 02:50:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:29,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:29,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:29,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26572849] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:29,600 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:29,600 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-02-10 02:50:29,600 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359598670] [2022-02-10 02:50:29,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:29,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:50:29,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:50:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:50:29,601 INFO L87 Difference]: Start difference. First operand 20924 states and 60224 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:30,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:30,372 INFO L93 Difference]: Finished difference Result 29209 states and 79800 transitions. [2022-02-10 02:50:30,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-10 02:50:30,372 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:30,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:30,448 INFO L225 Difference]: With dead ends: 29209 [2022-02-10 02:50:30,448 INFO L226 Difference]: Without dead ends: 29180 [2022-02-10 02:50:30,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=523, Invalid=1927, Unknown=0, NotChecked=0, Total=2450 [2022-02-10 02:50:30,449 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 195 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:30,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 146 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-10 02:50:30,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29180 states. [2022-02-10 02:50:30,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29180 to 21953. [2022-02-10 02:50:30,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21953 states, 21952 states have (on average 2.871765670553936) internal successors, (63041), 21952 states have internal predecessors, (63041), 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) [2022-02-10 02:50:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21953 states to 21953 states and 63041 transitions. [2022-02-10 02:50:30,990 INFO L78 Accepts]: Start accepts. Automaton has 21953 states and 63041 transitions. Word has length 25 [2022-02-10 02:50:30,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:30,990 INFO L470 AbstractCegarLoop]: Abstraction has 21953 states and 63041 transitions. [2022-02-10 02:50:30,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 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) [2022-02-10 02:50:30,990 INFO L276 IsEmpty]: Start isEmpty. Operand 21953 states and 63041 transitions. [2022-02-10 02:50:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:31,029 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:31,029 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:31,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:31,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:31,245 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:31,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:31,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1135526820, now seen corresponding path program 14 times [2022-02-10 02:50:31,246 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:31,246 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988222348] [2022-02-10 02:50:31,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:31,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:31,296 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,296 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:31,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988222348] [2022-02-10 02:50:31,296 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988222348] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:31,296 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588143431] [2022-02-10 02:50:31,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:31,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:31,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:31,298 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:31,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-02-10 02:50:31,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:31,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:31,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:31,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:31,603 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588143431] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:31,603 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:31,603 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-02-10 02:50:31,603 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373356584] [2022-02-10 02:50:31,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:31,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:31,603 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:31,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:31,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:31,604 INFO L87 Difference]: Start difference. First operand 21953 states and 63041 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:32,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:32,563 INFO L93 Difference]: Finished difference Result 23856 states and 66474 transitions. [2022-02-10 02:50:32,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-10 02:50:32,563 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:32,625 INFO L225 Difference]: With dead ends: 23856 [2022-02-10 02:50:32,625 INFO L226 Difference]: Without dead ends: 23840 [2022-02-10 02:50:32,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=872, Invalid=3418, Unknown=0, NotChecked=0, Total=4290 [2022-02-10 02:50:32,626 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 299 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:32,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 269 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23840 states. [2022-02-10 02:50:33,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23840 to 22609. [2022-02-10 02:50:33,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22609 states, 22608 states have (on average 2.852972399150743) internal successors, (64500), 22608 states have internal predecessors, (64500), 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) [2022-02-10 02:50:33,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22609 states to 22609 states and 64500 transitions. [2022-02-10 02:50:33,150 INFO L78 Accepts]: Start accepts. Automaton has 22609 states and 64500 transitions. Word has length 25 [2022-02-10 02:50:33,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:33,150 INFO L470 AbstractCegarLoop]: Abstraction has 22609 states and 64500 transitions. [2022-02-10 02:50:33,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 16 states have internal predecessors, (48), 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) [2022-02-10 02:50:33,151 INFO L276 IsEmpty]: Start isEmpty. Operand 22609 states and 64500 transitions. [2022-02-10 02:50:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:33,195 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:33,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:33,215 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-02-10 02:50:33,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-02-10 02:50:33,403 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash -757486040, now seen corresponding path program 15 times [2022-02-10 02:50:33,403 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:33,403 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201226882] [2022-02-10 02:50:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:33,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:33,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:33,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201226882] [2022-02-10 02:50:33,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201226882] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:33,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628604471] [2022-02-10 02:50:33,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:33,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:33,463 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:33,464 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-02-10 02:50:33,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:50:33,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:33,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:33,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:33,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:33,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:33,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628604471] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:33,767 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:33,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-02-10 02:50:33,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664040984] [2022-02-10 02:50:33,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:33,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:33,767 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:33,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:33,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:33,768 INFO L87 Difference]: Start difference. First operand 22609 states and 64500 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2022-02-10 02:50:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:35,349 INFO L93 Difference]: Finished difference Result 27151 states and 74834 transitions. [2022-02-10 02:50:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-02-10 02:50:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) Word has length 25 [2022-02-10 02:50:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:35,429 INFO L225 Difference]: With dead ends: 27151 [2022-02-10 02:50:35,429 INFO L226 Difference]: Without dead ends: 27151 [2022-02-10 02:50:35,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2467 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1734, Invalid=5406, Unknown=0, NotChecked=0, Total=7140 [2022-02-10 02:50:35,430 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 286 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:35,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 189 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27151 states. [2022-02-10 02:50:35,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27151 to 22712. [2022-02-10 02:50:35,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22712 states, 22711 states have (on average 2.849147989960812) internal successors, (64707), 22711 states have internal predecessors, (64707), 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) [2022-02-10 02:50:35,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22712 states to 22712 states and 64707 transitions. [2022-02-10 02:50:35,996 INFO L78 Accepts]: Start accepts. Automaton has 22712 states and 64707 transitions. Word has length 25 [2022-02-10 02:50:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:35,996 INFO L470 AbstractCegarLoop]: Abstraction has 22712 states and 64707 transitions. [2022-02-10 02:50:35,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2022-02-10 02:50:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 22712 states and 64707 transitions. [2022-02-10 02:50:36,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:36,038 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:36,038 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:36,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:36,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-02-10 02:50:36,242 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:36,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1032119128, now seen corresponding path program 16 times [2022-02-10 02:50:36,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:36,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080826226] [2022-02-10 02:50:36,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:36,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:36,290 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:36,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080826226] [2022-02-10 02:50:36,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080826226] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:36,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711859601] [2022-02-10 02:50:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:36,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:36,300 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:36,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-02-10 02:50:36,321 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:36,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:36,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:36,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:36,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:36,546 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:36,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711859601] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:36,546 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:36,547 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:50:36,547 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870123331] [2022-02-10 02:50:36,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:36,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:36,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:36,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:36,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:36,547 INFO L87 Difference]: Start difference. First operand 22712 states and 64707 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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) [2022-02-10 02:50:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:37,867 INFO L93 Difference]: Finished difference Result 29606 states and 80783 transitions. [2022-02-10 02:50:37,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 02:50:37,867 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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) Word has length 25 [2022-02-10 02:50:37,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:37,956 INFO L225 Difference]: With dead ends: 29606 [2022-02-10 02:50:37,956 INFO L226 Difference]: Without dead ends: 29598 [2022-02-10 02:50:37,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1041, Invalid=3789, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:50:37,957 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 268 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:37,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 222 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:37,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29598 states. [2022-02-10 02:50:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29598 to 22106. [2022-02-10 02:50:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22106 states, 22105 states have (on average 2.8382718841890977) internal successors, (62740), 22105 states have internal predecessors, (62740), 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) [2022-02-10 02:50:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22106 states to 22106 states and 62740 transitions. [2022-02-10 02:50:38,512 INFO L78 Accepts]: Start accepts. Automaton has 22106 states and 62740 transitions. Word has length 25 [2022-02-10 02:50:38,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:38,512 INFO L470 AbstractCegarLoop]: Abstraction has 22106 states and 62740 transitions. [2022-02-10 02:50:38,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 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) [2022-02-10 02:50:38,512 INFO L276 IsEmpty]: Start isEmpty. Operand 22106 states and 62740 transitions. [2022-02-10 02:50:38,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:38,550 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:38,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:38,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-02-10 02:50:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:38,751 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1817247636, now seen corresponding path program 36 times [2022-02-10 02:50:38,752 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:38,752 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415852696] [2022-02-10 02:50:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:38,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415852696] [2022-02-10 02:50:38,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415852696] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:38,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037809093] [2022-02-10 02:50:38,805 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:38,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:38,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:38,806 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:38,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-02-10 02:50:38,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:50:38,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:38,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:50:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:38,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:38,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:38,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037809093] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:38,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:38,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-02-10 02:50:38,922 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913414913] [2022-02-10 02:50:38,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:38,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:50:38,922 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:50:38,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:50:38,923 INFO L87 Difference]: Start difference. First operand 22106 states and 62740 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-02-10 02:50:39,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:39,195 INFO L93 Difference]: Finished difference Result 28815 states and 76158 transitions. [2022-02-10 02:50:39,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-10 02:50:39,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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) Word has length 25 [2022-02-10 02:50:39,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:39,279 INFO L225 Difference]: With dead ends: 28815 [2022-02-10 02:50:39,279 INFO L226 Difference]: Without dead ends: 28810 [2022-02-10 02:50:39,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=298, Unknown=0, NotChecked=0, Total=462 [2022-02-10 02:50:39,280 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 261 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:39,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 65 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28810 states. [2022-02-10 02:50:39,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28810 to 21218. [2022-02-10 02:50:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21218 states, 21217 states have (on average 2.8274968185888674) internal successors, (59991), 21217 states have internal predecessors, (59991), 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) [2022-02-10 02:50:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21218 states to 21218 states and 59991 transitions. [2022-02-10 02:50:39,834 INFO L78 Accepts]: Start accepts. Automaton has 21218 states and 59991 transitions. Word has length 25 [2022-02-10 02:50:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:39,834 INFO L470 AbstractCegarLoop]: Abstraction has 21218 states and 59991 transitions. [2022-02-10 02:50:39,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 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) [2022-02-10 02:50:39,834 INFO L276 IsEmpty]: Start isEmpty. Operand 21218 states and 59991 transitions. [2022-02-10 02:50:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:39,873 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:39,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:39,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:40,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2022-02-10 02:50:40,079 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash 349357300, now seen corresponding path program 17 times [2022-02-10 02:50:40,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:40,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139033750] [2022-02-10 02:50:40,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:40,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:40,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:40,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139033750] [2022-02-10 02:50:40,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139033750] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:40,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183995213] [2022-02-10 02:50:40,116 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:50:40,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:40,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:40,117 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:40,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-02-10 02:50:40,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:50:40,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:40,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:40,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:40,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:40,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:40,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:40,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183995213] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:40,439 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:40,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-02-10 02:50:40,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730551558] [2022-02-10 02:50:40,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:40,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:50:40,440 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:40,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:50:40,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:50:40,440 INFO L87 Difference]: Start difference. First operand 21218 states and 59991 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) [2022-02-10 02:50:42,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:42,378 INFO L93 Difference]: Finished difference Result 36098 states and 95296 transitions. [2022-02-10 02:50:42,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-10 02:50:42,378 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:42,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:42,478 INFO L225 Difference]: With dead ends: 36098 [2022-02-10 02:50:42,478 INFO L226 Difference]: Without dead ends: 36078 [2022-02-10 02:50:42,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2133 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1491, Invalid=4829, Unknown=0, NotChecked=0, Total=6320 [2022-02-10 02:50:42,480 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 264 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:42,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 323 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:50:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36078 states. [2022-02-10 02:50:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36078 to 21486. [2022-02-10 02:50:42,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21486 states, 21485 states have (on average 2.8285315336281127) internal successors, (60771), 21485 states have internal predecessors, (60771), 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) [2022-02-10 02:50:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21486 states to 21486 states and 60771 transitions. [2022-02-10 02:50:43,043 INFO L78 Accepts]: Start accepts. Automaton has 21486 states and 60771 transitions. Word has length 25 [2022-02-10 02:50:43,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:43,043 INFO L470 AbstractCegarLoop]: Abstraction has 21486 states and 60771 transitions. [2022-02-10 02:50:43,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) [2022-02-10 02:50:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 21486 states and 60771 transitions. [2022-02-10 02:50:43,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:43,082 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:43,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:43,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-02-10 02:50:43,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:43,286 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:43,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1030746826, now seen corresponding path program 18 times [2022-02-10 02:50:43,286 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:43,286 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404442058] [2022-02-10 02:50:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:43,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:43,338 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:43,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404442058] [2022-02-10 02:50:43,338 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404442058] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:43,338 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128005775] [2022-02-10 02:50:43,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:50:43,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:43,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:43,339 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:43,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-02-10 02:50:43,361 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-02-10 02:50:43,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:43,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:43,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:43,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:43,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:43,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128005775] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:43,565 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:43,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-02-10 02:50:43,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359677780] [2022-02-10 02:50:43,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:43,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:50:43,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:43,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:50:43,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:50:43,566 INFO L87 Difference]: Start difference. First operand 21486 states and 60771 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:44,953 INFO L93 Difference]: Finished difference Result 37103 states and 99610 transitions. [2022-02-10 02:50:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-10 02:50:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-02-10 02:50:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:45,051 INFO L225 Difference]: With dead ends: 37103 [2022-02-10 02:50:45,051 INFO L226 Difference]: Without dead ends: 37079 [2022-02-10 02:50:45,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1929 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1202, Invalid=4348, Unknown=0, NotChecked=0, Total=5550 [2022-02-10 02:50:45,054 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 320 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:45,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 234 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:45,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37079 states. [2022-02-10 02:50:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37079 to 23707. [2022-02-10 02:50:45,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23707 states, 23706 states have (on average 2.8433729857420063) internal successors, (67405), 23706 states have internal predecessors, (67405), 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) [2022-02-10 02:50:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23707 states to 23707 states and 67405 transitions. [2022-02-10 02:50:45,680 INFO L78 Accepts]: Start accepts. Automaton has 23707 states and 67405 transitions. Word has length 25 [2022-02-10 02:50:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:45,681 INFO L470 AbstractCegarLoop]: Abstraction has 23707 states and 67405 transitions. [2022-02-10 02:50:45,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 02:50:45,681 INFO L276 IsEmpty]: Start isEmpty. Operand 23707 states and 67405 transitions. [2022-02-10 02:50:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:45,720 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:45,720 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:45,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-02-10 02:50:45,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:45,927 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:45,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1891424268, now seen corresponding path program 19 times [2022-02-10 02:50:45,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:45,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675568616] [2022-02-10 02:50:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:45,974 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:45,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:45,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675568616] [2022-02-10 02:50:45,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675568616] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:45,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250972225] [2022-02-10 02:50:45,975 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:45,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:45,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:45,991 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:46,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-02-10 02:50:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:46,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:46,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:46,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:46,275 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250972225] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:46,275 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:46,275 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2022-02-10 02:50:46,275 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504819621] [2022-02-10 02:50:46,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:46,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-10 02:50:46,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-10 02:50:46,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-02-10 02:50:46,276 INFO L87 Difference]: Start difference. First operand 23707 states and 67405 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) [2022-02-10 02:50:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:47,694 INFO L93 Difference]: Finished difference Result 39839 states and 105664 transitions. [2022-02-10 02:50:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-10 02:50:47,695 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:47,813 INFO L225 Difference]: With dead ends: 39839 [2022-02-10 02:50:47,813 INFO L226 Difference]: Without dead ends: 39839 [2022-02-10 02:50:47,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2342 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1560, Invalid=4920, Unknown=0, NotChecked=0, Total=6480 [2022-02-10 02:50:47,814 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 310 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:47,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 339 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:47,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39839 states. [2022-02-10 02:50:48,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39839 to 23666. [2022-02-10 02:50:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23666 states, 23665 states have (on average 2.844960912740334) internal successors, (67326), 23665 states have internal predecessors, (67326), 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) [2022-02-10 02:50:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23666 states to 23666 states and 67326 transitions. [2022-02-10 02:50:48,498 INFO L78 Accepts]: Start accepts. Automaton has 23666 states and 67326 transitions. Word has length 25 [2022-02-10 02:50:48,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:48,499 INFO L470 AbstractCegarLoop]: Abstraction has 23666 states and 67326 transitions. [2022-02-10 02:50:48,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 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) [2022-02-10 02:50:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 23666 states and 67326 transitions. [2022-02-10 02:50:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:48,549 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:48,550 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:48,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-02-10 02:50:48,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-02-10 02:50:48,752 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -55530320, now seen corresponding path program 20 times [2022-02-10 02:50:48,753 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:48,753 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473857678] [2022-02-10 02:50:48,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:48,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:48,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:48,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473857678] [2022-02-10 02:50:48,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473857678] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:48,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066686491] [2022-02-10 02:50:48,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:48,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:48,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:48,804 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:48,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-02-10 02:50:48,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:48,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:48,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:48,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:49,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:49,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066686491] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:49,063 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:49,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-02-10 02:50:49,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126203403] [2022-02-10 02:50:49,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:49,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:49,063 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:49,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:49,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:49,063 INFO L87 Difference]: Start difference. First operand 23666 states and 67326 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:50,010 INFO L93 Difference]: Finished difference Result 25667 states and 70989 transitions. [2022-02-10 02:50:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-10 02:50:50,011 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:50,080 INFO L225 Difference]: With dead ends: 25667 [2022-02-10 02:50:50,080 INFO L226 Difference]: Without dead ends: 25663 [2022-02-10 02:50:50,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=668, Invalid=2194, Unknown=0, NotChecked=0, Total=2862 [2022-02-10 02:50:50,081 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 307 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:50,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 186 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:50,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25663 states. [2022-02-10 02:50:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25663 to 23670. [2022-02-10 02:50:50,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23670 states, 23669 states have (on average 2.8444801216781443) internal successors, (67326), 23669 states have internal predecessors, (67326), 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) [2022-02-10 02:50:50,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23670 states to 23670 states and 67326 transitions. [2022-02-10 02:50:50,607 INFO L78 Accepts]: Start accepts. Automaton has 23670 states and 67326 transitions. Word has length 25 [2022-02-10 02:50:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:50,609 INFO L470 AbstractCegarLoop]: Abstraction has 23670 states and 67326 transitions. [2022-02-10 02:50:50,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 23670 states and 67326 transitions. [2022-02-10 02:50:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:50,649 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:50,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:50,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:50,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:50,859 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1049064372, now seen corresponding path program 21 times [2022-02-10 02:50:50,859 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:50,859 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145524478] [2022-02-10 02:50:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:50,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:50,895 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:50,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145524478] [2022-02-10 02:50:50,895 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145524478] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:50,895 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071867863] [2022-02-10 02:50:50,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:50:50,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:50,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:50,896 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:50,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-02-10 02:50:50,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-02-10 02:50:50,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:50,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:50,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:51,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:51,152 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:51,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071867863] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:51,152 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:51,152 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 14 [2022-02-10 02:50:51,152 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283582008] [2022-02-10 02:50:51,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:51,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:51,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:51,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:51,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:51,153 INFO L87 Difference]: Start difference. First operand 23670 states and 67326 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) [2022-02-10 02:50:52,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:52,407 INFO L93 Difference]: Finished difference Result 25764 states and 71163 transitions. [2022-02-10 02:50:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-10 02:50:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:50:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:52,488 INFO L225 Difference]: With dead ends: 25764 [2022-02-10 02:50:52,488 INFO L226 Difference]: Without dead ends: 25764 [2022-02-10 02:50:52,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1062, Invalid=3360, Unknown=0, NotChecked=0, Total=4422 [2022-02-10 02:50:52,489 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 270 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:52,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [270 Valid, 304 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25764 states. [2022-02-10 02:50:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25764 to 23614. [2022-02-10 02:50:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23614 states, 23613 states have (on average 2.8434760513276585) internal successors, (67143), 23613 states have internal predecessors, (67143), 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) [2022-02-10 02:50:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23614 states to 23614 states and 67143 transitions. [2022-02-10 02:50:53,060 INFO L78 Accepts]: Start accepts. Automaton has 23614 states and 67143 transitions. Word has length 25 [2022-02-10 02:50:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:53,060 INFO L470 AbstractCegarLoop]: Abstraction has 23614 states and 67143 transitions. [2022-02-10 02:50:53,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 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) [2022-02-10 02:50:53,060 INFO L276 IsEmpty]: Start isEmpty. Operand 23614 states and 67143 transitions. [2022-02-10 02:50:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:53,102 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:53,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:53,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:53,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:53,308 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1507697848, now seen corresponding path program 22 times [2022-02-10 02:50:53,308 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:53,308 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934556409] [2022-02-10 02:50:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:53,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:53,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:53,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934556409] [2022-02-10 02:50:53,359 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934556409] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:53,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046331134] [2022-02-10 02:50:53,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:50:53,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:53,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:53,360 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:53,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-02-10 02:50:53,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:50:53,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:53,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:50:53,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:53,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:53,646 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:53,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046331134] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:53,646 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:53,646 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-02-10 02:50:53,646 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283646371] [2022-02-10 02:50:53,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:53,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:50:53,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:53,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:50:53,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:50:53,647 INFO L87 Difference]: Start difference. First operand 23614 states and 67143 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:54,639 INFO L93 Difference]: Finished difference Result 39261 states and 105962 transitions. [2022-02-10 02:50:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 02:50:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) Word has length 25 [2022-02-10 02:50:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:54,748 INFO L225 Difference]: With dead ends: 39261 [2022-02-10 02:50:54,750 INFO L226 Difference]: Without dead ends: 39236 [2022-02-10 02:50:54,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1982, Unknown=0, NotChecked=0, Total=2550 [2022-02-10 02:50:54,751 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 208 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:54,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 261 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:50:54,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39236 states. [2022-02-10 02:50:55,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39236 to 25127. [2022-02-10 02:50:55,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25127 states, 25126 states have (on average 2.8534983682241504) internal successors, (71697), 25126 states have internal predecessors, (71697), 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) [2022-02-10 02:50:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25127 states to 25127 states and 71697 transitions. [2022-02-10 02:50:55,440 INFO L78 Accepts]: Start accepts. Automaton has 25127 states and 71697 transitions. Word has length 25 [2022-02-10 02:50:55,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:55,440 INFO L470 AbstractCegarLoop]: Abstraction has 25127 states and 71697 transitions. [2022-02-10 02:50:55,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 14 states have internal predecessors, (48), 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) [2022-02-10 02:50:55,440 INFO L276 IsEmpty]: Start isEmpty. Operand 25127 states and 71697 transitions. [2022-02-10 02:50:55,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:55,481 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:55,481 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:55,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:55,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:55,697 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash -328627356, now seen corresponding path program 37 times [2022-02-10 02:50:55,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:55,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010973765] [2022-02-10 02:50:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:55,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:55,745 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:55,745 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010973765] [2022-02-10 02:50:55,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010973765] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:55,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065630640] [2022-02-10 02:50:55,746 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:50:55,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:55,747 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:55,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-02-10 02:50:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:55,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:50:55,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:55,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:55,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:55,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065630640] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:55,953 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:55,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2022-02-10 02:50:55,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048343518] [2022-02-10 02:50:55,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:55,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-10 02:50:55,954 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:55,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-10 02:50:55,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-02-10 02:50:55,954 INFO L87 Difference]: Start difference. First operand 25127 states and 71697 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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) [2022-02-10 02:50:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:56,346 INFO L93 Difference]: Finished difference Result 37535 states and 98273 transitions. [2022-02-10 02:50:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-10 02:50:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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) Word has length 25 [2022-02-10 02:50:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:56,446 INFO L225 Difference]: With dead ends: 37535 [2022-02-10 02:50:56,447 INFO L226 Difference]: Without dead ends: 37535 [2022-02-10 02:50:56,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2022-02-10 02:50:56,447 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 256 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:56,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 92 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:50:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37535 states. [2022-02-10 02:50:57,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37535 to 25164. [2022-02-10 02:50:57,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25164 states, 25163 states have (on average 2.8522036323172912) internal successors, (71770), 25163 states have internal predecessors, (71770), 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) [2022-02-10 02:50:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25164 states to 25164 states and 71770 transitions. [2022-02-10 02:50:57,166 INFO L78 Accepts]: Start accepts. Automaton has 25164 states and 71770 transitions. Word has length 25 [2022-02-10 02:50:57,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:57,166 INFO L470 AbstractCegarLoop]: Abstraction has 25164 states and 71770 transitions. [2022-02-10 02:50:57,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 12 states have internal predecessors, (47), 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) [2022-02-10 02:50:57,166 INFO L276 IsEmpty]: Start isEmpty. Operand 25164 states and 71770 transitions. [2022-02-10 02:50:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:57,208 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:57,208 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:57,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-02-10 02:50:57,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-02-10 02:50:57,424 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:50:57,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:50:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 180404964, now seen corresponding path program 38 times [2022-02-10 02:50:57,425 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:50:57,425 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972712105] [2022-02-10 02:50:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:50:57,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:50:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:50:57,478 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:57,479 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:50:57,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972712105] [2022-02-10 02:50:57,479 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972712105] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:50:57,479 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470035241] [2022-02-10 02:50:57,479 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:50:57,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:50:57,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:50:57,480 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:50:57,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-02-10 02:50:57,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:50:57,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:50:57,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:50:57,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:50:57,636 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:50:57,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:50:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:50:57,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470035241] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:50:57,678 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:50:57,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-02-10 02:50:57,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867428575] [2022-02-10 02:50:57,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:50:57,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:50:57,678 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:50:57,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:50:57,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:50:57,678 INFO L87 Difference]: Start difference. First operand 25164 states and 71770 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) [2022-02-10 02:50:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:50:59,085 INFO L93 Difference]: Finished difference Result 28552 states and 78343 transitions. [2022-02-10 02:50:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-10 02:50:59,086 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) Word has length 25 [2022-02-10 02:50:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:50:59,160 INFO L225 Difference]: With dead ends: 28552 [2022-02-10 02:50:59,161 INFO L226 Difference]: Without dead ends: 28551 [2022-02-10 02:50:59,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3687 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2246, Invalid=8056, Unknown=0, NotChecked=0, Total=10302 [2022-02-10 02:50:59,163 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 373 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:50:59,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 253 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:50:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28551 states. [2022-02-10 02:50:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28551 to 25187. [2022-02-10 02:50:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25187 states, 25186 states have (on average 2.8506313031048998) internal successors, (71796), 25186 states have internal predecessors, (71796), 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) [2022-02-10 02:50:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25187 states to 25187 states and 71796 transitions. [2022-02-10 02:50:59,748 INFO L78 Accepts]: Start accepts. Automaton has 25187 states and 71796 transitions. Word has length 25 [2022-02-10 02:50:59,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:50:59,749 INFO L470 AbstractCegarLoop]: Abstraction has 25187 states and 71796 transitions. [2022-02-10 02:50:59,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) [2022-02-10 02:50:59,749 INFO L276 IsEmpty]: Start isEmpty. Operand 25187 states and 71796 transitions. [2022-02-10 02:50:59,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:50:59,791 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:50:59,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:50:59,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:00,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:00,008 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:00,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:00,008 INFO L85 PathProgramCache]: Analyzing trace with hash 115868008, now seen corresponding path program 23 times [2022-02-10 02:51:00,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:00,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222680464] [2022-02-10 02:51:00,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:00,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:00,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222680464] [2022-02-10 02:51:00,036 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222680464] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:00,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551165660] [2022-02-10 02:51:00,036 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:00,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:00,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:00,038 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:00,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-02-10 02:51:00,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-02-10 02:51:00,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:00,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:00,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:00,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:00,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551165660] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:00,278 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:00,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:51:00,279 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381860182] [2022-02-10 02:51:00,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:00,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:51:00,279 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:51:00,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:51:00,286 INFO L87 Difference]: Start difference. First operand 25187 states and 71796 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:02,132 INFO L93 Difference]: Finished difference Result 50260 states and 137646 transitions. [2022-02-10 02:51:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-02-10 02:51:02,133 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:51:02,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:02,311 INFO L225 Difference]: With dead ends: 50260 [2022-02-10 02:51:02,311 INFO L226 Difference]: Without dead ends: 50235 [2022-02-10 02:51:02,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3167 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1838, Invalid=6534, Unknown=0, NotChecked=0, Total=8372 [2022-02-10 02:51:02,312 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 434 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:02,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 274 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:02,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50235 states. [2022-02-10 02:51:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50235 to 34665. [2022-02-10 02:51:03,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34665 states, 34664 states have (on average 2.9402550196168935) internal successors, (101921), 34664 states have internal predecessors, (101921), 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) [2022-02-10 02:51:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34665 states to 34665 states and 101921 transitions. [2022-02-10 02:51:03,247 INFO L78 Accepts]: Start accepts. Automaton has 34665 states and 101921 transitions. Word has length 25 [2022-02-10 02:51:03,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:03,247 INFO L470 AbstractCegarLoop]: Abstraction has 34665 states and 101921 transitions. [2022-02-10 02:51:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 34665 states and 101921 transitions. [2022-02-10 02:51:03,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:03,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:03,307 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:03,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-02-10 02:51:03,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:03,514 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1162750392, now seen corresponding path program 24 times [2022-02-10 02:51:03,515 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:03,515 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446487476] [2022-02-10 02:51:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:03,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:03,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:03,569 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:03,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446487476] [2022-02-10 02:51:03,569 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446487476] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:03,569 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223216171] [2022-02-10 02:51:03,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:03,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:03,581 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:03,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-02-10 02:51:03,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:51:03,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:03,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:03,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:03,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:03,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:03,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223216171] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:03,860 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:03,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:51:03,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480756988] [2022-02-10 02:51:03,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:03,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:51:03,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:03,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:51:03,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:51:03,861 INFO L87 Difference]: Start difference. First operand 34665 states and 101921 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 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) [2022-02-10 02:51:05,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:05,558 INFO L93 Difference]: Finished difference Result 61998 states and 169138 transitions. [2022-02-10 02:51:05,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-10 02:51:05,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 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) Word has length 25 [2022-02-10 02:51:05,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:05,769 INFO L225 Difference]: With dead ends: 61998 [2022-02-10 02:51:05,769 INFO L226 Difference]: Without dead ends: 61994 [2022-02-10 02:51:05,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1671 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1162, Invalid=3668, Unknown=0, NotChecked=0, Total=4830 [2022-02-10 02:51:05,770 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 332 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:05,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 265 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61994 states. [2022-02-10 02:51:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61994 to 38573. [2022-02-10 02:51:06,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38573 states, 38572 states have (on average 2.9638597946697085) internal successors, (114322), 38572 states have internal predecessors, (114322), 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) [2022-02-10 02:51:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38573 states to 38573 states and 114322 transitions. [2022-02-10 02:51:06,999 INFO L78 Accepts]: Start accepts. Automaton has 38573 states and 114322 transitions. Word has length 25 [2022-02-10 02:51:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:06,999 INFO L470 AbstractCegarLoop]: Abstraction has 38573 states and 114322 transitions. [2022-02-10 02:51:06,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 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) [2022-02-10 02:51:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 38573 states and 114322 transitions. [2022-02-10 02:51:07,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:07,080 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:07,080 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:07,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-02-10 02:51:07,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable80 [2022-02-10 02:51:07,297 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:07,298 INFO L85 PathProgramCache]: Analyzing trace with hash 756415780, now seen corresponding path program 39 times [2022-02-10 02:51:07,298 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:07,298 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131016042] [2022-02-10 02:51:07,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:07,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:07,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:07,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131016042] [2022-02-10 02:51:07,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131016042] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:07,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870958726] [2022-02-10 02:51:07,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:07,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:07,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:07,356 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:07,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-02-10 02:51:07,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:51:07,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:07,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:51:07,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:07,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:07,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870958726] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:07,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:07,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-02-10 02:51:07,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478331023] [2022-02-10 02:51:07,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:07,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:51:07,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:07,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:51:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:51:07,607 INFO L87 Difference]: Start difference. First operand 38573 states and 114322 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:51:08,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:08,764 INFO L93 Difference]: Finished difference Result 40621 states and 117814 transitions. [2022-02-10 02:51:08,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-10 02:51:08,765 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:51:08,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:08,882 INFO L225 Difference]: With dead ends: 40621 [2022-02-10 02:51:08,882 INFO L226 Difference]: Without dead ends: 40613 [2022-02-10 02:51:08,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=827, Invalid=2955, Unknown=0, NotChecked=0, Total=3782 [2022-02-10 02:51:08,883 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 255 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:08,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 298 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:08,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40613 states. [2022-02-10 02:51:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40613 to 38573. [2022-02-10 02:51:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38573 states, 38572 states have (on average 2.962433889868298) internal successors, (114267), 38572 states have internal predecessors, (114267), 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) [2022-02-10 02:51:09,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38573 states to 38573 states and 114267 transitions. [2022-02-10 02:51:09,789 INFO L78 Accepts]: Start accepts. Automaton has 38573 states and 114267 transitions. Word has length 25 [2022-02-10 02:51:09,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:09,790 INFO L470 AbstractCegarLoop]: Abstraction has 38573 states and 114267 transitions. [2022-02-10 02:51:09,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 16 states have internal predecessors, (49), 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) [2022-02-10 02:51:09,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38573 states and 114267 transitions. [2022-02-10 02:51:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:09,868 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:09,868 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:09,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-02-10 02:51:10,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:10,082 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:10,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash -330344216, now seen corresponding path program 25 times [2022-02-10 02:51:10,083 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:10,083 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618122052] [2022-02-10 02:51:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:10,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:10,145 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:10,145 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:10,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618122052] [2022-02-10 02:51:10,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618122052] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:10,145 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259683340] [2022-02-10 02:51:10,145 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:10,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:10,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:10,147 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:10,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-02-10 02:51:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:10,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:51:10,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:10,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:10,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259683340] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:10,442 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:10,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-02-10 02:51:10,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483554559] [2022-02-10 02:51:10,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:10,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:51:10,443 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:51:10,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:51:10,443 INFO L87 Difference]: Start difference. First operand 38573 states and 114267 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2022-02-10 02:51:11,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:11,732 INFO L93 Difference]: Finished difference Result 39694 states and 116197 transitions. [2022-02-10 02:51:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 02:51:11,732 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) Word has length 25 [2022-02-10 02:51:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:11,850 INFO L225 Difference]: With dead ends: 39694 [2022-02-10 02:51:11,851 INFO L226 Difference]: Without dead ends: 39692 [2022-02-10 02:51:11,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1077 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=791, Invalid=2749, Unknown=0, NotChecked=0, Total=3540 [2022-02-10 02:51:11,851 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 226 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:11,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 217 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:11,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39692 states. [2022-02-10 02:51:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39692 to 38651. [2022-02-10 02:51:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38651 states, 38650 states have (on average 2.9620698576972835) internal successors, (114484), 38650 states have internal predecessors, (114484), 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) [2022-02-10 02:51:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38651 states to 38651 states and 114484 transitions. [2022-02-10 02:51:13,337 INFO L78 Accepts]: Start accepts. Automaton has 38651 states and 114484 transitions. Word has length 25 [2022-02-10 02:51:13,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:13,337 INFO L470 AbstractCegarLoop]: Abstraction has 38651 states and 114484 transitions. [2022-02-10 02:51:13,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 16 states have internal predecessors, (51), 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) [2022-02-10 02:51:13,338 INFO L276 IsEmpty]: Start isEmpty. Operand 38651 states and 114484 transitions. [2022-02-10 02:51:13,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:13,411 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:13,411 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:13,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:13,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:13,628 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:13,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1287629172, now seen corresponding path program 26 times [2022-02-10 02:51:13,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:13,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050978747] [2022-02-10 02:51:13,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:13,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:13,699 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:13,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050978747] [2022-02-10 02:51:13,699 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050978747] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:13,699 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855478175] [2022-02-10 02:51:13,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-02-10 02:51:13,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:13,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:13,701 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:13,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-02-10 02:51:13,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-02-10 02:51:13,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:13,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:51:13,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:13,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:13,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-02-10 02:51:13,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855478175] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:13,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:13,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6] total 15 [2022-02-10 02:51:13,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421874037] [2022-02-10 02:51:13,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:13,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:51:13,962 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:51:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:51:13,962 INFO L87 Difference]: Start difference. First operand 38651 states and 114484 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 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) [2022-02-10 02:51:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:14,933 INFO L93 Difference]: Finished difference Result 39577 states and 116028 transitions. [2022-02-10 02:51:14,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-10 02:51:14,933 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 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) Word has length 25 [2022-02-10 02:51:14,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:15,683 INFO L225 Difference]: With dead ends: 39577 [2022-02-10 02:51:15,688 INFO L226 Difference]: Without dead ends: 39569 [2022-02-10 02:51:15,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=549, Invalid=2207, Unknown=0, NotChecked=0, Total=2756 [2022-02-10 02:51:15,688 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 222 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:15,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 238 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:15,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39569 states. [2022-02-10 02:51:16,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39569 to 38651. [2022-02-10 02:51:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38651 states, 38650 states have (on average 2.9619663648124193) internal successors, (114480), 38650 states have internal predecessors, (114480), 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) [2022-02-10 02:51:16,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38651 states to 38651 states and 114480 transitions. [2022-02-10 02:51:16,653 INFO L78 Accepts]: Start accepts. Automaton has 38651 states and 114480 transitions. Word has length 25 [2022-02-10 02:51:16,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:16,653 INFO L470 AbstractCegarLoop]: Abstraction has 38651 states and 114480 transitions. [2022-02-10 02:51:16,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 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) [2022-02-10 02:51:16,653 INFO L276 IsEmpty]: Start isEmpty. Operand 38651 states and 114480 transitions. [2022-02-10 02:51:16,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:16,730 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:16,730 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:16,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:16,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:16,947 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:16,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:16,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1463726744, now seen corresponding path program 27 times [2022-02-10 02:51:16,948 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:16,948 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023371135] [2022-02-10 02:51:16,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:16,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:17,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:17,029 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:17,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023371135] [2022-02-10 02:51:17,029 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023371135] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:17,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036032571] [2022-02-10 02:51:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-02-10 02:51:17,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:17,030 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:17,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-02-10 02:51:17,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-02-10 02:51:17,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:17,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjunts are in the unsatisfiable core [2022-02-10 02:51:17,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:17,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:17,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036032571] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:17,304 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:17,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2022-02-10 02:51:17,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74271445] [2022-02-10 02:51:17,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:17,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-10 02:51:17,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:17,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-10 02:51:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2022-02-10 02:51:17,305 INFO L87 Difference]: Start difference. First operand 38651 states and 114480 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) [2022-02-10 02:51:18,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:18,142 INFO L93 Difference]: Finished difference Result 39786 states and 116408 transitions. [2022-02-10 02:51:18,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-10 02:51:18,142 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) Word has length 25 [2022-02-10 02:51:18,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:18,238 INFO L225 Difference]: With dead ends: 39786 [2022-02-10 02:51:18,238 INFO L226 Difference]: Without dead ends: 39776 [2022-02-10 02:51:18,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=636, Invalid=2670, Unknown=0, NotChecked=0, Total=3306 [2022-02-10 02:51:18,239 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 252 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:18,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 370 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-10 02:51:18,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39776 states. [2022-02-10 02:51:19,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39776 to 38830. [2022-02-10 02:51:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38830 states, 38829 states have (on average 2.95817559040923) internal successors, (114863), 38829 states have internal predecessors, (114863), 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) [2022-02-10 02:51:19,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38830 states to 38830 states and 114863 transitions. [2022-02-10 02:51:19,359 INFO L78 Accepts]: Start accepts. Automaton has 38830 states and 114863 transitions. Word has length 25 [2022-02-10 02:51:19,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:19,359 INFO L470 AbstractCegarLoop]: Abstraction has 38830 states and 114863 transitions. [2022-02-10 02:51:19,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 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) [2022-02-10 02:51:19,360 INFO L276 IsEmpty]: Start isEmpty. Operand 38830 states and 114863 transitions. [2022-02-10 02:51:19,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:19,424 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:19,424 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:19,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:19,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2022-02-10 02:51:19,641 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1831054520, now seen corresponding path program 28 times [2022-02-10 02:51:19,642 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:19,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782985396] [2022-02-10 02:51:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:19,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:19,684 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:19,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782985396] [2022-02-10 02:51:19,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782985396] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:19,684 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191290626] [2022-02-10 02:51:19,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:19,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:19,685 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:19,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-02-10 02:51:19,712 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:19,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:19,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:19,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:19,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:19,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191290626] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:19,946 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:19,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:51:19,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849869268] [2022-02-10 02:51:19,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:19,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:51:19,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:19,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:51:19,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:51:19,947 INFO L87 Difference]: Start difference. First operand 38830 states and 114863 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:21,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:21,623 INFO L93 Difference]: Finished difference Result 65499 states and 181344 transitions. [2022-02-10 02:51:21,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-10 02:51:21,624 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:51:21,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:21,864 INFO L225 Difference]: With dead ends: 65499 [2022-02-10 02:51:21,864 INFO L226 Difference]: Without dead ends: 65495 [2022-02-10 02:51:21,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1127, Invalid=3565, Unknown=0, NotChecked=0, Total=4692 [2022-02-10 02:51:21,865 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 343 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 255 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:21,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65495 states. [2022-02-10 02:51:23,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65495 to 39880. [2022-02-10 02:51:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39880 states, 39879 states have (on average 2.964492590085007) internal successors, (118221), 39879 states have internal predecessors, (118221), 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) [2022-02-10 02:51:23,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39880 states to 39880 states and 118221 transitions. [2022-02-10 02:51:23,183 INFO L78 Accepts]: Start accepts. Automaton has 39880 states and 118221 transitions. Word has length 25 [2022-02-10 02:51:23,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:23,183 INFO L470 AbstractCegarLoop]: Abstraction has 39880 states and 118221 transitions. [2022-02-10 02:51:23,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:23,183 INFO L276 IsEmpty]: Start isEmpty. Operand 39880 states and 118221 transitions. [2022-02-10 02:51:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:23,247 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:23,247 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:23,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:23,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-02-10 02:51:23,463 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:23,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1782523250, now seen corresponding path program 29 times [2022-02-10 02:51:23,464 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:23,464 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196028725] [2022-02-10 02:51:23,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:23,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:23,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:23,516 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:23,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196028725] [2022-02-10 02:51:23,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196028725] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:23,516 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646480810] [2022-02-10 02:51:23,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-02-10 02:51:23,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:23,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:23,518 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:23,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-02-10 02:51:23,560 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-02-10 02:51:23,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:23,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:23,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:23,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:23,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646480810] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:23,746 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:23,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:51:23,746 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235241357] [2022-02-10 02:51:23,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:23,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:51:23,746 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:23,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:51:23,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:51:23,747 INFO L87 Difference]: Start difference. First operand 39880 states and 118221 transitions. Second operand has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2022-02-10 02:51:25,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:25,385 INFO L93 Difference]: Finished difference Result 59275 states and 164989 transitions. [2022-02-10 02:51:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-10 02:51:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) Word has length 25 [2022-02-10 02:51:25,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:25,549 INFO L225 Difference]: With dead ends: 59275 [2022-02-10 02:51:25,549 INFO L226 Difference]: Without dead ends: 59249 [2022-02-10 02:51:25,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1814 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1191, Invalid=4211, Unknown=0, NotChecked=0, Total=5402 [2022-02-10 02:51:25,550 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 418 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:25,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 232 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:25,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59249 states. [2022-02-10 02:51:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59249 to 41555. [2022-02-10 02:51:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41555 states, 41554 states have (on average 2.970135245704385) internal successors, (123421), 41554 states have internal predecessors, (123421), 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) [2022-02-10 02:51:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41555 states to 41555 states and 123421 transitions. [2022-02-10 02:51:26,925 INFO L78 Accepts]: Start accepts. Automaton has 41555 states and 123421 transitions. Word has length 25 [2022-02-10 02:51:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:26,925 INFO L470 AbstractCegarLoop]: Abstraction has 41555 states and 123421 transitions. [2022-02-10 02:51:26,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.0) internal successors, (45), 14 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) [2022-02-10 02:51:26,925 INFO L276 IsEmpty]: Start isEmpty. Operand 41555 states and 123421 transitions. [2022-02-10 02:51:26,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:27,000 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:27,000 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:27,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:27,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-02-10 02:51:27,215 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:27,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:27,216 INFO L85 PathProgramCache]: Analyzing trace with hash -409727048, now seen corresponding path program 30 times [2022-02-10 02:51:27,216 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:27,216 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599056373] [2022-02-10 02:51:27,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:27,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,257 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:27,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599056373] [2022-02-10 02:51:27,257 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599056373] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:27,257 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986760623] [2022-02-10 02:51:27,257 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-02-10 02:51:27,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:27,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:27,258 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:27,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-02-10 02:51:27,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-02-10 02:51:27,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:27,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:27,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:27,422 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:27,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:27,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986760623] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:27,463 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:27,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2022-02-10 02:51:27,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410924465] [2022-02-10 02:51:27,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:27,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-10 02:51:27,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:27,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-10 02:51:27,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-02-10 02:51:27,464 INFO L87 Difference]: Start difference. First operand 41555 states and 123421 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:29,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:29,386 INFO L93 Difference]: Finished difference Result 64463 states and 178958 transitions. [2022-02-10 02:51:29,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-10 02:51:29,387 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:51:29,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:29,601 INFO L225 Difference]: With dead ends: 64463 [2022-02-10 02:51:29,601 INFO L226 Difference]: Without dead ends: 64463 [2022-02-10 02:51:29,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1340, Invalid=4360, Unknown=0, NotChecked=0, Total=5700 [2022-02-10 02:51:29,601 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 340 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:29,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 264 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-10 02:51:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64463 states. [2022-02-10 02:51:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64463 to 37042. [2022-02-10 02:51:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37042 states, 37041 states have (on average 2.945033881374693) internal successors, (109087), 37041 states have internal predecessors, (109087), 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) [2022-02-10 02:51:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37042 states to 37042 states and 109087 transitions. [2022-02-10 02:51:30,897 INFO L78 Accepts]: Start accepts. Automaton has 37042 states and 109087 transitions. Word has length 25 [2022-02-10 02:51:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:30,897 INFO L470 AbstractCegarLoop]: Abstraction has 37042 states and 109087 transitions. [2022-02-10 02:51:30,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 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) [2022-02-10 02:51:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 37042 states and 109087 transitions. [2022-02-10 02:51:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:30,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:30,966 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:30,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-02-10 02:51:31,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2022-02-10 02:51:31,180 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash -943100888, now seen corresponding path program 40 times [2022-02-10 02:51:31,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:31,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3440896] [2022-02-10 02:51:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:31,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:31,206 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:31,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:31,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3440896] [2022-02-10 02:51:31,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3440896] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:31,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178527802] [2022-02-10 02:51:31,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-02-10 02:51:31,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:31,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:31,215 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:31,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-02-10 02:51:31,237 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-02-10 02:51:31,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-02-10 02:51:31,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-10 02:51:31,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:31,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:31,379 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 02:51:31,379 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178527802] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:31,379 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:31,379 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-02-10 02:51:31,379 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839701988] [2022-02-10 02:51:31,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:31,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 02:51:31,380 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:31,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 02:51:31,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-02-10 02:51:31,380 INFO L87 Difference]: Start difference. First operand 37042 states and 109087 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2022-02-10 02:51:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:32,054 INFO L93 Difference]: Finished difference Result 68800 states and 191491 transitions. [2022-02-10 02:51:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-02-10 02:51:32,055 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) Word has length 25 [2022-02-10 02:51:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:32,295 INFO L225 Difference]: With dead ends: 68800 [2022-02-10 02:51:32,296 INFO L226 Difference]: Without dead ends: 68800 [2022-02-10 02:51:32,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=202, Invalid=350, Unknown=0, NotChecked=0, Total=552 [2022-02-10 02:51:32,296 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 275 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:32,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 75 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 02:51:32,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68800 states. [2022-02-10 02:51:33,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68800 to 51780. [2022-02-10 02:51:33,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51780 states, 51779 states have (on average 2.992081731976284) internal successors, (154927), 51779 states have internal predecessors, (154927), 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) [2022-02-10 02:51:34,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51780 states to 51780 states and 154927 transitions. [2022-02-10 02:51:34,069 INFO L78 Accepts]: Start accepts. Automaton has 51780 states and 154927 transitions. Word has length 25 [2022-02-10 02:51:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 02:51:34,069 INFO L470 AbstractCegarLoop]: Abstraction has 51780 states and 154927 transitions. [2022-02-10 02:51:34,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 10 states have internal predecessors, (49), 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) [2022-02-10 02:51:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 51780 states and 154927 transitions. [2022-02-10 02:51:34,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-02-10 02:51:34,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-10 02:51:34,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 02:51:34,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-02-10 02:51:34,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:34,596 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-02-10 02:51:34,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 02:51:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1437581868, now seen corresponding path program 31 times [2022-02-10 02:51:34,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 02:51:34,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444554134] [2022-02-10 02:51:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 02:51:34,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 02:51:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,649 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 02:51:34,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444554134] [2022-02-10 02:51:34,649 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444554134] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 02:51:34,649 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840455613] [2022-02-10 02:51:34,649 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-02-10 02:51:34,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 02:51:34,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 02:51:34,652 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-10 02:51:34,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-02-10 02:51:34,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 02:51:34,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2022-02-10 02:51:34,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 02:51:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 02:51:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 02:51:34,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840455613] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 02:51:34,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 02:51:34,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2022-02-10 02:51:34,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503877846] [2022-02-10 02:51:34,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 02:51:34,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-10 02:51:34,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 02:51:34,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-10 02:51:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-02-10 02:51:34,912 INFO L87 Difference]: Start difference. First operand 51780 states and 154927 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) [2022-02-10 02:51:37,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 02:51:37,418 INFO L93 Difference]: Finished difference Result 86969 states and 247518 transitions. [2022-02-10 02:51:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-10 02:51:37,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 15 states have internal predecessors, (51), 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) Word has length 25 [2022-02-10 02:51:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 02:51:37,719 INFO L225 Difference]: With dead ends: 86969 [2022-02-10 02:51:37,719 INFO L226 Difference]: Without dead ends: 86945 [2022-02-10 02:51:37,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3728 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1936, Invalid=7570, Unknown=0, NotChecked=0, Total=9506 [2022-02-10 02:51:37,720 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 620 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-10 02:51:37,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 259 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-10 02:51:37,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86945 states.