/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 18:41:18,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 18:41:18,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 18:41:18,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 18:41:18,693 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-FA-NoLbe.epf [2022-03-03 18:41:18,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 18:41:18,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 18:41:18,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 18:41:18,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 18:41:18,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 18:41:18,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 18:41:18,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 18:41:18,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 18:41:18,724 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 18:41:18,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 18:41:18,724 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 18:41:18,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 18:41:18,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 18:41:18,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:41:18,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 18:41:18,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 18:41:18,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 18:41:18,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 18:41:18,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 18:41:18,930 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 18:41:18,932 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 18:41:18,933 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl [2022-03-03 18:41:18,934 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/mult-comm.wvr.bpl' [2022-03-03 18:41:18,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 18:41:18,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 18:41:18,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 18:41:18,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 18:41:18,953 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 18:41:18,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,976 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 18:41:18,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 18:41:18,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 18:41:18,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 18:41:18,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 18:41:18,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 18:41:18,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 18:41:18,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 18:41:18,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 18:41:18,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/1) ... [2022-03-03 18:41:18,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 18:41:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:19,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 18:41:19,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 18:41:19,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 18:41:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 18:41:19,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 18:41:19,048 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 18:41:19,048 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 18:41:19,048 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 18:41:19,049 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 18:41:19,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 18:41:19,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 18:41:19,049 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 18:41:19,081 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 18:41:19,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 18:41:19,143 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 18:41:19,151 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 18:41:19,151 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 18:41:19,153 INFO L202 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:41:19 BoogieIcfgContainer [2022-03-03 18:41:19,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 18:41:19,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 18:41:19,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 18:41:19,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 18:41:19,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 06:41:18" (1/2) ... [2022-03-03 18:41:19,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194b9bcd and model type mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 06:41:19, skipping insertion in model container [2022-03-03 18:41:19,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 06:41:19" (2/2) ... [2022-03-03 18:41:19,158 INFO L111 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.bpl [2022-03-03 18:41:19,161 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 18:41:19,161 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 18:41:19,161 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 18:41:19,161 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 18:41:19,180 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 18:41:19,206 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 18:41:19,211 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, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 18:41:19,211 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 18:41:19,216 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 19 transitions, 54 flow [2022-03-03 18:41:19,226 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 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) [2022-03-03 18:41:19,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 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) [2022-03-03 18:41:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-03 18:41:19,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:19,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:19,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash 250888984, now seen corresponding path program 1 times [2022-03-03 18:41:19,241 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:19,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325717928] [2022-03-03 18:41:19,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:19,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:19,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:19,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:19,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325717928] [2022-03-03 18:41:19,328 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325717928] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 18:41:19,328 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 18:41:19,328 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-03 18:41:19,329 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349119150] [2022-03-03 18:41:19,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 18:41:19,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 18:41:19,333 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:19,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 18:41:19,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 18:41:19,352 INFO L87 Difference]: Start difference. First operand has 29 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 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) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:19,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:19,374 INFO L93 Difference]: Finished difference Result 54 states and 102 transitions. [2022-03-03 18:41:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 18:41:19,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-03 18:41:19,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:19,382 INFO L225 Difference]: With dead ends: 54 [2022-03-03 18:41:19,382 INFO L226 Difference]: Without dead ends: 47 [2022-03-03 18:41:19,384 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 [2022-03-03 18:41:19,386 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:19,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:19,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-03 18:41:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-03-03 18:41:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 37 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:19,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 71 transitions. [2022-03-03 18:41:19,506 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 71 transitions. Word has length 11 [2022-03-03 18:41:19,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:19,507 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 71 transitions. [2022-03-03 18:41:19,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:19,507 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 71 transitions. [2022-03-03 18:41:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-03 18:41:19,508 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:19,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:19,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 18:41:19,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:19,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -97245286, now seen corresponding path program 1 times [2022-03-03 18:41:19,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:19,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288910448] [2022-03-03 18:41:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:19,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:19,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:19,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288910448] [2022-03-03 18:41:19,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288910448] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:19,671 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34707910] [2022-03-03 18:41:19,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:19,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:19,679 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) [2022-03-03 18:41:19,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-03 18:41:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:19,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 18:41:19,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:19,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:19,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:20,047 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34707910] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:20,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:20,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-03-03 18:41:20,051 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454339888] [2022-03-03 18:41:20,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:20,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:20,053 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:20,056 INFO L87 Difference]: Start difference. First operand 38 states and 71 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:20,214 INFO L93 Difference]: Finished difference Result 97 states and 181 transitions. [2022-03-03 18:41:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 18:41:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-03 18:41:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:20,217 INFO L225 Difference]: With dead ends: 97 [2022-03-03 18:41:20,217 INFO L226 Difference]: Without dead ends: 72 [2022-03-03 18:41:20,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:41:20,221 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:20,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 68 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:20,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-03 18:41:20,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 41. [2022-03-03 18:41:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 2.0) internal successors, (80), 40 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 80 transitions. [2022-03-03 18:41:20,235 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 80 transitions. Word has length 13 [2022-03-03 18:41:20,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:20,236 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 80 transitions. [2022-03-03 18:41:20,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 9 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,236 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 80 transitions. [2022-03-03 18:41:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-03 18:41:20,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:20,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:20,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:20,451 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 [2022-03-03 18:41:20,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1927085850, now seen corresponding path program 1 times [2022-03-03 18:41:20,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:20,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343040621] [2022-03-03 18:41:20,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:20,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:20,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:20,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:20,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343040621] [2022-03-03 18:41:20,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343040621] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:20,573 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465607048] [2022-03-03 18:41:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:20,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:20,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:20,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:20,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-03 18:41:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:20,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 18:41:20,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:20,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:20,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465607048] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:20,807 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:20,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-03 18:41:20,808 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519099546] [2022-03-03 18:41:20,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:20,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 18:41:20,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:20,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 18:41:20,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-03-03 18:41:20,809 INFO L87 Difference]: Start difference. First operand 41 states and 80 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:20,877 INFO L93 Difference]: Finished difference Result 95 states and 173 transitions. [2022-03-03 18:41:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 18:41:20,878 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-03 18:41:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:20,879 INFO L225 Difference]: With dead ends: 95 [2022-03-03 18:41:20,879 INFO L226 Difference]: Without dead ends: 75 [2022-03-03 18:41:20,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:20,880 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 34 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:20,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 67 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 18:41:20,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-03-03 18:41:20,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 51. [2022-03-03 18:41:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 2.06) internal successors, (103), 50 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 103 transitions. [2022-03-03 18:41:20,884 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 103 transitions. Word has length 13 [2022-03-03 18:41:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:20,885 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 103 transitions. [2022-03-03 18:41:20,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 103 transitions. [2022-03-03 18:41:20,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-03 18:41:20,885 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:20,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:20,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:21,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-03 18:41:21,106 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:21,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -671308006, now seen corresponding path program 2 times [2022-03-03 18:41:21,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:21,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65700678] [2022-03-03 18:41:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:21,207 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:21,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65700678] [2022-03-03 18:41:21,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65700678] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:21,207 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436408388] [2022-03-03 18:41:21,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:21,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:21,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:21,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-03 18:41:21,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:21,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:21,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-03 18:41:21,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:21,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:21,415 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436408388] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:21,415 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:21,415 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-03-03 18:41:21,415 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913551225] [2022-03-03 18:41:21,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:21,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-03 18:41:21,416 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:21,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-03 18:41:21,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-03-03 18:41:21,416 INFO L87 Difference]: Start difference. First operand 51 states and 103 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:21,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:21,570 INFO L93 Difference]: Finished difference Result 104 states and 194 transitions. [2022-03-03 18:41:21,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 18:41:21,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 13 [2022-03-03 18:41:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:21,571 INFO L225 Difference]: With dead ends: 104 [2022-03-03 18:41:21,571 INFO L226 Difference]: Without dead ends: 80 [2022-03-03 18:41:21,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-03 18:41:21,572 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 61 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:21,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 63 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:21,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-03 18:41:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 49. [2022-03-03 18:41:21,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 100 transitions. [2022-03-03 18:41:21,576 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 100 transitions. Word has length 13 [2022-03-03 18:41:21,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:21,576 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 100 transitions. [2022-03-03 18:41:21,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:21,576 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 100 transitions. [2022-03-03 18:41:21,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:21,577 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:21,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:21,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:21,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:21,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:21,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:21,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1917465828, now seen corresponding path program 1 times [2022-03-03 18:41:21,778 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:21,778 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024213244] [2022-03-03 18:41:21,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:21,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:21,913 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:21,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024213244] [2022-03-03 18:41:21,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024213244] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:21,913 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473854498] [2022-03-03 18:41:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:21,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:21,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:21,915 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:21,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-03 18:41:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:21,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:21,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:22,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:22,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:22,381 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473854498] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:22,381 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:22,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:22,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444883926] [2022-03-03 18:41:22,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:22,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:22,382 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:22,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:22,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:22,383 INFO L87 Difference]: Start difference. First operand 49 states and 100 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:22,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:22,672 INFO L93 Difference]: Finished difference Result 94 states and 176 transitions. [2022-03-03 18:41:22,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:22,672 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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 15 [2022-03-03 18:41:22,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:22,673 INFO L225 Difference]: With dead ends: 94 [2022-03-03 18:41:22,673 INFO L226 Difference]: Without dead ends: 87 [2022-03-03 18:41:22,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:41:22,674 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:22,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 69 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-03-03 18:41:22,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 53. [2022-03-03 18:41:22,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.0384615384615383) internal successors, (106), 52 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 106 transitions. [2022-03-03 18:41:22,678 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 106 transitions. Word has length 15 [2022-03-03 18:41:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:22,678 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 106 transitions. [2022-03-03 18:41:22,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 106 transitions. [2022-03-03 18:41:22,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:22,679 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:22,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:22,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:22,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:22,879 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:22,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:22,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1994781080, now seen corresponding path program 2 times [2022-03-03 18:41:22,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:22,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219807083] [2022-03-03 18:41:22,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:22,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:22,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:22,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:22,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219807083] [2022-03-03 18:41:22,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219807083] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:22,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127085721] [2022-03-03 18:41:22,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:22,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:23,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:23,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-03 18:41:23,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:23,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:23,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:23,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:23,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:23,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127085721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:23,472 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:23,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:23,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155091973] [2022-03-03 18:41:23,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:23,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:23,473 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:23,474 INFO L87 Difference]: Start difference. First operand 53 states and 106 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:23,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:23,742 INFO L93 Difference]: Finished difference Result 94 states and 176 transitions. [2022-03-03 18:41:23,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:41:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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 15 [2022-03-03 18:41:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:23,743 INFO L225 Difference]: With dead ends: 94 [2022-03-03 18:41:23,743 INFO L226 Difference]: Without dead ends: 87 [2022-03-03 18:41:23,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:41:23,743 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 51 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:23,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 100 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-03-03 18:41:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 54. [2022-03-03 18:41:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 109 transitions. [2022-03-03 18:41:23,747 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 109 transitions. Word has length 15 [2022-03-03 18:41:23,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:23,747 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 109 transitions. [2022-03-03 18:41:23,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:23,747 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 109 transitions. [2022-03-03 18:41:23,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:23,748 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:23,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:23,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:23,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:23,955 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:23,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:23,956 INFO L85 PathProgramCache]: Analyzing trace with hash -220892388, now seen corresponding path program 3 times [2022-03-03 18:41:23,956 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:23,956 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146913388] [2022-03-03 18:41:23,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:23,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:23,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:24,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:24,053 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:24,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146913388] [2022-03-03 18:41:24,054 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146913388] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:24,054 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250812417] [2022-03-03 18:41:24,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:24,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:24,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:24,067 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:24,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-03 18:41:24,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:41:24,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:24,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:24,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:24,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:24,516 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250812417] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:24,516 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:24,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:24,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519908880] [2022-03-03 18:41:24,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:24,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:24,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:24,521 INFO L87 Difference]: Start difference. First operand 54 states and 109 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:25,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:25,115 INFO L93 Difference]: Finished difference Result 129 states and 240 transitions. [2022-03-03 18:41:25,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-03 18:41:25,115 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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 15 [2022-03-03 18:41:25,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:25,116 INFO L225 Difference]: With dead ends: 129 [2022-03-03 18:41:25,116 INFO L226 Difference]: Without dead ends: 122 [2022-03-03 18:41:25,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=824, Unknown=0, NotChecked=0, Total=1056 [2022-03-03 18:41:25,117 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 103 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:25,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 97 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:25,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-03 18:41:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 55. [2022-03-03 18:41:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:25,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 113 transitions. [2022-03-03 18:41:25,121 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 113 transitions. Word has length 15 [2022-03-03 18:41:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:25,121 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 113 transitions. [2022-03-03 18:41:25,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:25,121 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 113 transitions. [2022-03-03 18:41:25,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:25,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:25,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:25,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:25,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:25,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash -205431592, now seen corresponding path program 4 times [2022-03-03 18:41:25,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:25,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49616027] [2022-03-03 18:41:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:25,442 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:25,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49616027] [2022-03-03 18:41:25,442 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49616027] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:25,442 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742732824] [2022-03-03 18:41:25,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:25,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:25,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:25,444 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:25,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-03 18:41:25,464 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:25,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:25,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:25,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:25,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:25,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:25,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742732824] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:25,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:25,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:25,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457549816] [2022-03-03 18:41:25,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:25,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:25,806 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:25,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:25,807 INFO L87 Difference]: Start difference. First operand 55 states and 113 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:26,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:26,291 INFO L93 Difference]: Finished difference Result 115 states and 220 transitions. [2022-03-03 18:41:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 18:41:26,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 15 [2022-03-03 18:41:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:26,292 INFO L225 Difference]: With dead ends: 115 [2022-03-03 18:41:26,292 INFO L226 Difference]: Without dead ends: 108 [2022-03-03 18:41:26,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:41:26,293 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 84 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:26,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 83 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-03-03 18:41:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 55. [2022-03-03 18:41:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 2.0925925925925926) internal successors, (113), 54 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:26,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 113 transitions. [2022-03-03 18:41:26,296 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 113 transitions. Word has length 15 [2022-03-03 18:41:26,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:26,296 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 113 transitions. [2022-03-03 18:41:26,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:26,296 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 113 transitions. [2022-03-03 18:41:26,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:26,297 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:26,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:26,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-03-03 18:41:26,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:26,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:26,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:26,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1287493684, now seen corresponding path program 5 times [2022-03-03 18:41:26,498 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:26,498 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132833166] [2022-03-03 18:41:26,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:26,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:26,586 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:26,586 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132833166] [2022-03-03 18:41:26,586 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132833166] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:26,587 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597877405] [2022-03-03 18:41:26,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:26,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:26,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:26,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:26,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-03 18:41:26,608 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:26,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:26,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:26,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:26,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:26,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597877405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:26,991 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:26,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:26,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181204386] [2022-03-03 18:41:26,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:26,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:26,992 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:26,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:26,992 INFO L87 Difference]: Start difference. First operand 55 states and 113 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:27,155 INFO L93 Difference]: Finished difference Result 81 states and 159 transitions. [2022-03-03 18:41:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:41:27,155 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:27,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:27,155 INFO L225 Difference]: With dead ends: 81 [2022-03-03 18:41:27,156 INFO L226 Difference]: Without dead ends: 74 [2022-03-03 18:41:27,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-03-03 18:41:27,156 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 42 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:27,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 90 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:27,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-03 18:41:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 57. [2022-03-03 18:41:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:27,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 118 transitions. [2022-03-03 18:41:27,159 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 118 transitions. Word has length 15 [2022-03-03 18:41:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:27,159 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 118 transitions. [2022-03-03 18:41:27,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 118 transitions. [2022-03-03 18:41:27,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:27,160 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:27,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:27,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:27,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-03 18:41:27,367 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:27,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 791800144, now seen corresponding path program 6 times [2022-03-03 18:41:27,368 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:27,368 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915071627] [2022-03-03 18:41:27,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:27,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:27,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:27,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:27,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915071627] [2022-03-03 18:41:27,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915071627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:27,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097386211] [2022-03-03 18:41:27,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:27,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:27,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:27,454 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:27,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-03 18:41:27,473 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 18:41:27,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:27,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:27,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:27,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:27,806 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097386211] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:27,806 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:27,806 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:27,806 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973767239] [2022-03-03 18:41:27,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:27,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:27,807 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:27,807 INFO L87 Difference]: Start difference. First operand 57 states and 118 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:28,143 INFO L93 Difference]: Finished difference Result 118 states and 226 transitions. [2022-03-03 18:41:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 18:41:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:28,144 INFO L225 Difference]: With dead ends: 118 [2022-03-03 18:41:28,144 INFO L226 Difference]: Without dead ends: 111 [2022-03-03 18:41:28,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:41:28,145 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 86 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:28,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 97 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:28,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-03-03 18:41:28,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 58. [2022-03-03 18:41:28,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:28,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2022-03-03 18:41:28,148 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 15 [2022-03-03 18:41:28,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:28,148 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2022-03-03 18:41:28,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2022-03-03 18:41:28,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:28,148 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:28,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:28,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:28,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-03 18:41:28,355 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 807260940, now seen corresponding path program 7 times [2022-03-03 18:41:28,356 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:28,356 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618425094] [2022-03-03 18:41:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:28,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:28,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:28,435 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:28,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618425094] [2022-03-03 18:41:28,435 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618425094] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:28,435 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401699840] [2022-03-03 18:41:28,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:28,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:28,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:28,443 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:28,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-03 18:41:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:28,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:28,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:28,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:28,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:28,783 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401699840] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:28,783 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:28,783 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:28,784 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586300810] [2022-03-03 18:41:28,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:28,784 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:28,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:28,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:28,784 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:29,097 INFO L93 Difference]: Finished difference Result 104 states and 206 transitions. [2022-03-03 18:41:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:29,098 INFO L225 Difference]: With dead ends: 104 [2022-03-03 18:41:29,098 INFO L226 Difference]: Without dead ends: 97 [2022-03-03 18:41:29,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:41:29,098 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 60 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:29,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 104 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-03-03 18:41:29,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 56. [2022-03-03 18:41:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.090909090909091) internal successors, (115), 55 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:29,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 115 transitions. [2022-03-03 18:41:29,101 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 115 transitions. Word has length 15 [2022-03-03 18:41:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:29,101 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 115 transitions. [2022-03-03 18:41:29,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 115 transitions. [2022-03-03 18:41:29,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:29,102 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:29,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:29,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:29,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-03 18:41:29,310 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1356996392, now seen corresponding path program 8 times [2022-03-03 18:41:29,310 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:29,310 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344911440] [2022-03-03 18:41:29,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:29,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:29,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:29,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344911440] [2022-03-03 18:41:29,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344911440] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:29,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716420132] [2022-03-03 18:41:29,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:29,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:29,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:29,397 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:29,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-03 18:41:29,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:29,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:29,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:29,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:29,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:29,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:29,753 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716420132] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:29,753 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:29,753 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:29,753 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81881650] [2022-03-03 18:41:29,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:29,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:29,753 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:29,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:29,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:29,754 INFO L87 Difference]: Start difference. First operand 56 states and 115 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:30,068 INFO L93 Difference]: Finished difference Result 107 states and 208 transitions. [2022-03-03 18:41:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:30,069 INFO L225 Difference]: With dead ends: 107 [2022-03-03 18:41:30,069 INFO L226 Difference]: Without dead ends: 100 [2022-03-03 18:41:30,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:41:30,070 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 83 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:30,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 85 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:30,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-03 18:41:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 58. [2022-03-03 18:41:30,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.1403508771929824) internal successors, (122), 57 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:30,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 122 transitions. [2022-03-03 18:41:30,073 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 122 transitions. Word has length 15 [2022-03-03 18:41:30,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:30,073 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 122 transitions. [2022-03-03 18:41:30,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:30,073 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 122 transitions. [2022-03-03 18:41:30,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:30,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:30,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:30,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:30,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-03 18:41:30,283 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:30,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1341535596, now seen corresponding path program 9 times [2022-03-03 18:41:30,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:30,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593834054] [2022-03-03 18:41:30,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:30,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:30,370 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:30,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593834054] [2022-03-03 18:41:30,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593834054] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:30,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012833856] [2022-03-03 18:41:30,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:30,388 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:30,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-03 18:41:30,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:41:30,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:30,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:30,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:30,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:30,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012833856] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:30,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:30,766 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:30,766 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540870961] [2022-03-03 18:41:30,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:30,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:30,766 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:30,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:30,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:30,767 INFO L87 Difference]: Start difference. First operand 58 states and 122 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:31,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:31,112 INFO L93 Difference]: Finished difference Result 114 states and 221 transitions. [2022-03-03 18:41:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 18:41:31,112 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:31,114 INFO L225 Difference]: With dead ends: 114 [2022-03-03 18:41:31,114 INFO L226 Difference]: Without dead ends: 107 [2022-03-03 18:41:31,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2022-03-03 18:41:31,116 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 55 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:31,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 105 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-03-03 18:41:31,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 57. [2022-03-03 18:41:31,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 2.107142857142857) internal successors, (118), 56 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:31,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 118 transitions. [2022-03-03 18:41:31,127 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 118 transitions. Word has length 15 [2022-03-03 18:41:31,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:31,128 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 118 transitions. [2022-03-03 18:41:31,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:31,128 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 118 transitions. [2022-03-03 18:41:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:31,128 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:31,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:31,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:31,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-03 18:41:31,345 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:31,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:31,345 INFO L85 PathProgramCache]: Analyzing trace with hash -770080790, now seen corresponding path program 10 times [2022-03-03 18:41:31,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:31,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387062513] [2022-03-03 18:41:31,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:31,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:31,449 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:31,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387062513] [2022-03-03 18:41:31,449 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387062513] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:31,449 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381354666] [2022-03-03 18:41:31,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:31,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:31,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:31,464 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:31,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-03 18:41:31,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:31,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:31,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:31,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:31,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:31,816 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381354666] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:31,817 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:31,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:31,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145031270] [2022-03-03 18:41:31,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:31,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:31,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:31,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:31,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:31,818 INFO L87 Difference]: Start difference. First operand 57 states and 118 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:31,984 INFO L93 Difference]: Finished difference Result 84 states and 166 transitions. [2022-03-03 18:41:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:41:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:31,984 INFO L225 Difference]: With dead ends: 84 [2022-03-03 18:41:31,984 INFO L226 Difference]: Without dead ends: 77 [2022-03-03 18:41:31,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:41:31,985 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:31,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 77 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-03-03 18:41:31,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 60. [2022-03-03 18:41:31,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:31,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 123 transitions. [2022-03-03 18:41:31,987 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 123 transitions. Word has length 15 [2022-03-03 18:41:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:31,987 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 123 transitions. [2022-03-03 18:41:31,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 123 transitions. [2022-03-03 18:41:31,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:31,988 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:31,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:32,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:32,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-03 18:41:32,195 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:32,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:32,196 INFO L85 PathProgramCache]: Analyzing trace with hash -401695404, now seen corresponding path program 11 times [2022-03-03 18:41:32,196 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:32,196 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895287806] [2022-03-03 18:41:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:32,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:32,268 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:32,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895287806] [2022-03-03 18:41:32,268 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895287806] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:32,268 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633465559] [2022-03-03 18:41:32,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:32,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:32,270 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:32,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-03 18:41:32,289 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:41:32,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:32,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:32,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:32,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:32,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633465559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:32,633 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:32,633 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:32,633 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959232483] [2022-03-03 18:41:32,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:32,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:32,633 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:32,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:32,634 INFO L87 Difference]: Start difference. First operand 60 states and 123 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:32,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:32,819 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2022-03-03 18:41:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:41:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:32,820 INFO L225 Difference]: With dead ends: 85 [2022-03-03 18:41:32,820 INFO L226 Difference]: Without dead ends: 78 [2022-03-03 18:41:32,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:41:32,820 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:32,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 89 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:32,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-03-03 18:41:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2022-03-03 18:41:32,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.098360655737705) internal successors, (128), 61 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:32,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 128 transitions. [2022-03-03 18:41:32,822 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 128 transitions. Word has length 15 [2022-03-03 18:41:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:32,822 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 128 transitions. [2022-03-03 18:41:32,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 128 transitions. [2022-03-03 18:41:32,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:32,823 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:32,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:32,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:33,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:33,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:33,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:33,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1677598424, now seen corresponding path program 12 times [2022-03-03 18:41:33,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:33,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120390149] [2022-03-03 18:41:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:33,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:33,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:33,108 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:33,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120390149] [2022-03-03 18:41:33,108 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120390149] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:33,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380260617] [2022-03-03 18:41:33,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:33,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:33,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:33,109 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:33,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-03 18:41:33,162 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:41:33,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:33,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:33,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:33,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:33,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:33,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380260617] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:33,483 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:33,483 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:33,483 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154147109] [2022-03-03 18:41:33,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:33,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:33,483 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:33,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:33,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:33,484 INFO L87 Difference]: Start difference. First operand 62 states and 128 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:33,832 INFO L93 Difference]: Finished difference Result 122 states and 234 transitions. [2022-03-03 18:41:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 18:41:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:33,832 INFO L225 Difference]: With dead ends: 122 [2022-03-03 18:41:33,833 INFO L226 Difference]: Without dead ends: 115 [2022-03-03 18:41:33,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2022-03-03 18:41:33,833 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 77 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:33,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 112 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-03-03 18:41:33,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2022-03-03 18:41:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:33,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 132 transitions. [2022-03-03 18:41:33,848 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 132 transitions. Word has length 15 [2022-03-03 18:41:33,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:33,848 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 132 transitions. [2022-03-03 18:41:33,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:33,848 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 132 transitions. [2022-03-03 18:41:33,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:33,848 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:33,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:33,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:34,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-03 18:41:34,049 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:34,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1693059220, now seen corresponding path program 13 times [2022-03-03 18:41:34,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:34,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30987917] [2022-03-03 18:41:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:34,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:34,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:34,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30987917] [2022-03-03 18:41:34,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30987917] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:34,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385459063] [2022-03-03 18:41:34,134 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:34,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:34,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:34,135 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:34,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-03 18:41:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:34,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:34,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:34,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385459063] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:34,519 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:34,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:34,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273653980] [2022-03-03 18:41:34,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:34,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:34,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:34,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:34,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:34,520 INFO L87 Difference]: Start difference. First operand 63 states and 132 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:34,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:34,843 INFO L93 Difference]: Finished difference Result 108 states and 214 transitions. [2022-03-03 18:41:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:34,843 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:34,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:34,844 INFO L225 Difference]: With dead ends: 108 [2022-03-03 18:41:34,844 INFO L226 Difference]: Without dead ends: 101 [2022-03-03 18:41:34,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:41:34,845 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 66 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:34,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 93 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-03-03 18:41:34,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 61. [2022-03-03 18:41:34,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 2.0833333333333335) internal successors, (125), 60 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:34,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 125 transitions. [2022-03-03 18:41:34,847 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 125 transitions. Word has length 15 [2022-03-03 18:41:34,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:34,847 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 125 transitions. [2022-03-03 18:41:34,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:34,847 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 125 transitions. [2022-03-03 18:41:34,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:34,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:34,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:34,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-03 18:41:35,048 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -471198112, now seen corresponding path program 14 times [2022-03-03 18:41:35,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:35,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551316104] [2022-03-03 18:41:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:35,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:35,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:35,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551316104] [2022-03-03 18:41:35,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551316104] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:35,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357135613] [2022-03-03 18:41:35,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:35,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:35,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:35,117 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:35,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-03 18:41:35,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:35,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:35,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:35,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:35,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:35,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:35,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:35,438 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357135613] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:35,438 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:35,438 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:35,438 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930898956] [2022-03-03 18:41:35,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:35,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:35,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:35,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:35,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:35,439 INFO L87 Difference]: Start difference. First operand 61 states and 125 transitions. Second operand has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:35,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:35,716 INFO L93 Difference]: Finished difference Result 111 states and 216 transitions. [2022-03-03 18:41:35,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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 15 [2022-03-03 18:41:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:35,723 INFO L225 Difference]: With dead ends: 111 [2022-03-03 18:41:35,723 INFO L226 Difference]: Without dead ends: 104 [2022-03-03 18:41:35,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:41:35,724 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 96 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:35,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 105 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-03 18:41:35,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 63. [2022-03-03 18:41:35,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 2.129032258064516) internal successors, (132), 62 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:35,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 132 transitions. [2022-03-03 18:41:35,728 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 132 transitions. Word has length 15 [2022-03-03 18:41:35,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:35,728 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 132 transitions. [2022-03-03 18:41:35,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 21 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) [2022-03-03 18:41:35,730 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 132 transitions. [2022-03-03 18:41:35,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:35,730 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:35,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:35,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:35,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-03 18:41:35,936 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash -455737316, now seen corresponding path program 15 times [2022-03-03 18:41:35,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:35,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710475320] [2022-03-03 18:41:35,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:36,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:36,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710475320] [2022-03-03 18:41:36,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710475320] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:36,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199838559] [2022-03-03 18:41:36,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:36,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:36,006 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:36,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-03 18:41:36,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-03-03 18:41:36,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:36,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:36,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:36,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:36,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:36,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:36,305 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199838559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:36,305 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:36,305 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:36,305 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545162442] [2022-03-03 18:41:36,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:36,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:36,305 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:36,306 INFO L87 Difference]: Start difference. First operand 63 states and 132 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:36,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:36,639 INFO L93 Difference]: Finished difference Result 118 states and 229 transitions. [2022-03-03 18:41:36,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-03 18:41:36,639 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:36,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:36,639 INFO L225 Difference]: With dead ends: 118 [2022-03-03 18:41:36,640 INFO L226 Difference]: Without dead ends: 111 [2022-03-03 18:41:36,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=663, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:41:36,640 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 69 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:36,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 111 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:36,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-03-03 18:41:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 62. [2022-03-03 18:41:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.098360655737705) internal successors, (128), 61 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 128 transitions. [2022-03-03 18:41:36,642 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 128 transitions. Word has length 15 [2022-03-03 18:41:36,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:36,642 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 128 transitions. [2022-03-03 18:41:36,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:36,642 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 128 transitions. [2022-03-03 18:41:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:36,643 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:36,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:36,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:36,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:36,851 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:36,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:36,852 INFO L85 PathProgramCache]: Analyzing trace with hash 115717490, now seen corresponding path program 16 times [2022-03-03 18:41:36,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:36,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986137106] [2022-03-03 18:41:36,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:36,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:36,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:36,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986137106] [2022-03-03 18:41:36,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986137106] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:36,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493722483] [2022-03-03 18:41:36,934 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:36,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:36,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:36,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:36,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-03 18:41:36,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:36,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:36,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:36,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:37,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:37,302 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:37,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493722483] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:37,302 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:37,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2022-03-03 18:41:37,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333049554] [2022-03-03 18:41:37,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:37,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-03 18:41:37,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-03 18:41:37,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2022-03-03 18:41:37,303 INFO L87 Difference]: Start difference. First operand 62 states and 128 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:37,482 INFO L93 Difference]: Finished difference Result 88 states and 174 transitions. [2022-03-03 18:41:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-03 18:41:37,482 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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 15 [2022-03-03 18:41:37,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:37,483 INFO L225 Difference]: With dead ends: 88 [2022-03-03 18:41:37,483 INFO L226 Difference]: Without dead ends: 81 [2022-03-03 18:41:37,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2022-03-03 18:41:37,483 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 48 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:37,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 80 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:37,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-03-03 18:41:37,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 60. [2022-03-03 18:41:37,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 123 transitions. [2022-03-03 18:41:37,485 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 123 transitions. Word has length 15 [2022-03-03 18:41:37,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:37,485 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 123 transitions. [2022-03-03 18:41:37,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 21 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) [2022-03-03 18:41:37,485 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 123 transitions. [2022-03-03 18:41:37,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:37,485 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:37,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:37,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:37,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:37,686 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1565289700, now seen corresponding path program 17 times [2022-03-03 18:41:37,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:37,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582463995] [2022-03-03 18:41:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:37,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:37,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582463995] [2022-03-03 18:41:37,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582463995] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:37,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176886440] [2022-03-03 18:41:37,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:37,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:37,776 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:37,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-03 18:41:37,811 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:41:37,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:37,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:37,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:37,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:37,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:38,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:38,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176886440] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:38,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:38,136 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:38,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897287308] [2022-03-03 18:41:38,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:38,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:38,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:38,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:38,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:38,136 INFO L87 Difference]: Start difference. First operand 60 states and 123 transitions. Second operand has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:38,536 INFO L93 Difference]: Finished difference Result 129 states and 242 transitions. [2022-03-03 18:41:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-03 18:41:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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 15 [2022-03-03 18:41:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:38,537 INFO L225 Difference]: With dead ends: 129 [2022-03-03 18:41:38,537 INFO L226 Difference]: Without dead ends: 122 [2022-03-03 18:41:38,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=184, Invalid=628, Unknown=0, NotChecked=0, Total=812 [2022-03-03 18:41:38,537 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 127 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:38,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 72 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:38,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-03-03 18:41:38,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 62. [2022-03-03 18:41:38,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.1311475409836067) internal successors, (130), 61 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 130 transitions. [2022-03-03 18:41:38,540 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 130 transitions. Word has length 15 [2022-03-03 18:41:38,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:38,540 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 130 transitions. [2022-03-03 18:41:38,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.75) internal successors, (35), 19 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) [2022-03-03 18:41:38,540 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 130 transitions. [2022-03-03 18:41:38,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:38,541 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:38,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:38,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-03-03 18:41:38,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-03 18:41:38,742 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:38,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:38,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1549828904, now seen corresponding path program 18 times [2022-03-03 18:41:38,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:38,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923504722] [2022-03-03 18:41:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:38,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:38,802 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:38,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923504722] [2022-03-03 18:41:38,802 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923504722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:38,802 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483737157] [2022-03-03 18:41:38,802 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:38,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:38,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:38,803 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:38,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-03 18:41:38,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-03-03 18:41:38,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:38,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:38,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:38,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:39,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:39,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483737157] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:39,117 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:39,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:39,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410358438] [2022-03-03 18:41:39,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:39,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:39,118 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:39,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:39,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:39,118 INFO L87 Difference]: Start difference. First operand 62 states and 130 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:39,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:39,570 INFO L93 Difference]: Finished difference Result 136 states and 255 transitions. [2022-03-03 18:41:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-03 18:41:39,570 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 15 [2022-03-03 18:41:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:39,571 INFO L225 Difference]: With dead ends: 136 [2022-03-03 18:41:39,571 INFO L226 Difference]: Without dead ends: 129 [2022-03-03 18:41:39,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=731, Unknown=0, NotChecked=0, Total=930 [2022-03-03 18:41:39,571 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 93 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:39,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 101 Invalid, 461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:39,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-03-03 18:41:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 61. [2022-03-03 18:41:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 2.1) internal successors, (126), 60 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 126 transitions. [2022-03-03 18:41:39,573 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 126 transitions. Word has length 15 [2022-03-03 18:41:39,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:39,574 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 126 transitions. [2022-03-03 18:41:39,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:39,574 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 126 transitions. [2022-03-03 18:41:39,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:39,574 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:39,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:39,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:39,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-03 18:41:39,784 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:39,784 INFO L85 PathProgramCache]: Analyzing trace with hash -978374098, now seen corresponding path program 19 times [2022-03-03 18:41:39,784 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:39,784 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277164373] [2022-03-03 18:41:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:39,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:39,851 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:39,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:39,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277164373] [2022-03-03 18:41:39,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277164373] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:39,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147306438] [2022-03-03 18:41:39,852 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:39,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:39,853 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:39,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-03 18:41:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:39,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:39,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:40,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:40,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:40,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:40,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147306438] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:40,141 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:40,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:40,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424270413] [2022-03-03 18:41:40,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:40,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:40,141 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:40,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:40,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:40,142 INFO L87 Difference]: Start difference. First operand 61 states and 126 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:40,347 INFO L93 Difference]: Finished difference Result 109 states and 205 transitions. [2022-03-03 18:41:40,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-03 18:41:40,347 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 15 [2022-03-03 18:41:40,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:40,348 INFO L225 Difference]: With dead ends: 109 [2022-03-03 18:41:40,348 INFO L226 Difference]: Without dead ends: 102 [2022-03-03 18:41:40,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:41:40,348 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 70 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:40,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 99 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-03 18:41:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 60. [2022-03-03 18:41:40,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.0847457627118646) internal successors, (123), 59 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:40,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 123 transitions. [2022-03-03 18:41:40,350 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 123 transitions. Word has length 15 [2022-03-03 18:41:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:40,350 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 123 transitions. [2022-03-03 18:41:40,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:40,351 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 123 transitions. [2022-03-03 18:41:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-03 18:41:40,351 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:40,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:40,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:40,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:40,567 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:40,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:40,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1516229676, now seen corresponding path program 20 times [2022-03-03 18:41:40,567 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:40,567 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937226828] [2022-03-03 18:41:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:40,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:40,646 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:40,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937226828] [2022-03-03 18:41:40,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937226828] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:40,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284080796] [2022-03-03 18:41:40,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:40,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:40,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:40,661 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:40,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-03 18:41:40,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:40,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:40,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-03 18:41:40,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:40,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:40,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284080796] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:40,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:40,998 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2022-03-03 18:41:40,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23504249] [2022-03-03 18:41:40,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:40,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-03 18:41:40,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-03 18:41:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-03-03 18:41:40,998 INFO L87 Difference]: Start difference. First operand 60 states and 123 transitions. Second operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:41,239 INFO L93 Difference]: Finished difference Result 109 states and 205 transitions. [2022-03-03 18:41:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-03 18:41:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 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 15 [2022-03-03 18:41:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:41,240 INFO L225 Difference]: With dead ends: 109 [2022-03-03 18:41:41,240 INFO L226 Difference]: Without dead ends: 102 [2022-03-03 18:41:41,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:41:41,241 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 75 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:41,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 71 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-03 18:41:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 65. [2022-03-03 18:41:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 2.046875) internal successors, (131), 64 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 131 transitions. [2022-03-03 18:41:41,243 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 131 transitions. Word has length 15 [2022-03-03 18:41:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:41,243 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 131 transitions. [2022-03-03 18:41:41,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 131 transitions. [2022-03-03 18:41:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:41,243 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:41,243 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:41,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-03 18:41:41,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:41,455 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:41,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2202064, now seen corresponding path program 2 times [2022-03-03 18:41:41,456 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:41,456 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028354918] [2022-03-03 18:41:41,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:41,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:41,532 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:41,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028354918] [2022-03-03 18:41:41,532 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028354918] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:41,532 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612838086] [2022-03-03 18:41:41,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:41,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:41,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:41,534 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:41:41,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-03 18:41:41,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:41,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:41,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:41:41,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:41,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:41,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:41,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612838086] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:41,788 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:41,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-03-03 18:41:41,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757034367] [2022-03-03 18:41:41,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:41,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:41:41,789 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:41,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:41:41,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:41:41,789 INFO L87 Difference]: Start difference. First operand 65 states and 131 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:41,941 INFO L93 Difference]: Finished difference Result 108 states and 206 transitions. [2022-03-03 18:41:41,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:41:41,941 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 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 17 [2022-03-03 18:41:41,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:41,941 INFO L225 Difference]: With dead ends: 108 [2022-03-03 18:41:41,941 INFO L226 Difference]: Without dead ends: 76 [2022-03-03 18:41:41,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:41:41,942 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 95 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:41,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 110 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:41:41,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-03 18:41:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 64. [2022-03-03 18:41:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.015873015873016) internal successors, (127), 63 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 127 transitions. [2022-03-03 18:41:41,944 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 127 transitions. Word has length 17 [2022-03-03 18:41:41,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:41,944 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 127 transitions. [2022-03-03 18:41:41,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:41,944 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 127 transitions. [2022-03-03 18:41:41,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:41,944 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:41,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:41,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-03 18:41:42,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-03 18:41:42,155 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1435213470, now seen corresponding path program 21 times [2022-03-03 18:41:42,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:42,156 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183854064] [2022-03-03 18:41:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:42,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:42,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183854064] [2022-03-03 18:41:42,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183854064] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:42,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366312659] [2022-03-03 18:41:42,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:42,256 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) [2022-03-03 18:41:42,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-03 18:41:42,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:41:42,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:42,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:42,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:42,801 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366312659] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:42,801 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:42,802 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:42,802 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471954200] [2022-03-03 18:41:42,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:42,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:42,802 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:42,803 INFO L87 Difference]: Start difference. First operand 64 states and 127 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:44,284 INFO L93 Difference]: Finished difference Result 192 states and 351 transitions. [2022-03-03 18:41:44,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:41:44,285 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:41:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:44,286 INFO L225 Difference]: With dead ends: 192 [2022-03-03 18:41:44,286 INFO L226 Difference]: Without dead ends: 178 [2022-03-03 18:41:44,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 923 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=543, Invalid=2879, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:41:44,287 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 183 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:44,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 146 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:41:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-03-03 18:41:44,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 82. [2022-03-03 18:41:44,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.074074074074074) internal successors, (168), 81 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 168 transitions. [2022-03-03 18:41:44,290 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 168 transitions. Word has length 17 [2022-03-03 18:41:44,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:44,290 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 168 transitions. [2022-03-03 18:41:44,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:44,290 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 168 transitions. [2022-03-03 18:41:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:44,290 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:44,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:44,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:44,499 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,SelfDestructingSolverStorable25 [2022-03-03 18:41:44,499 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:44,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:44,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1052493082, now seen corresponding path program 22 times [2022-03-03 18:41:44,500 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:44,500 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521966374] [2022-03-03 18:41:44,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:44,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,612 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:44,612 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521966374] [2022-03-03 18:41:44,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521966374] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:44,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837449458] [2022-03-03 18:41:44,613 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:44,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:44,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:44,614 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) [2022-03-03 18:41:44,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-03 18:41:44,634 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:44,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:44,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:44,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:44,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:45,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:45,102 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837449458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:45,102 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:45,102 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:45,102 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110124528] [2022-03-03 18:41:45,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:45,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:45,103 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:45,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:45,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:45,103 INFO L87 Difference]: Start difference. First operand 82 states and 168 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:46,339 INFO L93 Difference]: Finished difference Result 189 states and 351 transitions. [2022-03-03 18:41:46,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:41:46,339 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:41:46,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:46,340 INFO L225 Difference]: With dead ends: 189 [2022-03-03 18:41:46,340 INFO L226 Difference]: Without dead ends: 175 [2022-03-03 18:41:46,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 705 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=480, Invalid=2276, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:41:46,341 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 132 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:46,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 160 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:46,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-03-03 18:41:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 86. [2022-03-03 18:41:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 2.0941176470588236) internal successors, (178), 85 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 178 transitions. [2022-03-03 18:41:46,344 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 178 transitions. Word has length 17 [2022-03-03 18:41:46,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:46,344 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 178 transitions. [2022-03-03 18:41:46,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 178 transitions. [2022-03-03 18:41:46,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:46,344 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:46,344 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:46,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:46,551 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,SelfDestructingSolverStorable26 [2022-03-03 18:41:46,551 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:46,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:46,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1163180386, now seen corresponding path program 23 times [2022-03-03 18:41:46,552 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:46,552 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134080248] [2022-03-03 18:41:46,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:46,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:46,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134080248] [2022-03-03 18:41:46,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134080248] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:46,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920294637] [2022-03-03 18:41:46,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:46,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:46,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:46,657 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) [2022-03-03 18:41:46,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-03 18:41:46,676 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:41:46,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:46,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:46,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:46,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:47,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920294637] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:47,163 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:47,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:47,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060840702] [2022-03-03 18:41:47,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:47,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:47,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:47,164 INFO L87 Difference]: Start difference. First operand 86 states and 178 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:48,543 INFO L93 Difference]: Finished difference Result 232 states and 432 transitions. [2022-03-03 18:41:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:41:48,543 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:41:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:48,547 INFO L225 Difference]: With dead ends: 232 [2022-03-03 18:41:48,547 INFO L226 Difference]: Without dead ends: 218 [2022-03-03 18:41:48,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=693, Invalid=3089, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:41:48,548 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 202 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:48,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 196 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:48,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-03-03 18:41:48,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 88. [2022-03-03 18:41:48,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.1379310344827585) internal successors, (186), 87 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 186 transitions. [2022-03-03 18:41:48,551 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 186 transitions. Word has length 17 [2022-03-03 18:41:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:48,551 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 186 transitions. [2022-03-03 18:41:48,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 186 transitions. [2022-03-03 18:41:48,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:48,552 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:48,552 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:48,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:48,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-03 18:41:48,764 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1147719590, now seen corresponding path program 24 times [2022-03-03 18:41:48,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:48,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201793902] [2022-03-03 18:41:48,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:48,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:48,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:48,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201793902] [2022-03-03 18:41:48,835 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201793902] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:48,835 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729236188] [2022-03-03 18:41:48,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:48,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:48,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:48,837 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) [2022-03-03 18:41:48,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-03 18:41:48,855 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:41:48,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:48,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:49,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:49,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729236188] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:49,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:49,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:49,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954651633] [2022-03-03 18:41:49,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:49,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:49,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:49,190 INFO L87 Difference]: Start difference. First operand 88 states and 186 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:50,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:50,200 INFO L93 Difference]: Finished difference Result 197 states and 378 transitions. [2022-03-03 18:41:50,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 18:41:50,200 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:41:50,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:50,201 INFO L225 Difference]: With dead ends: 197 [2022-03-03 18:41:50,201 INFO L226 Difference]: Without dead ends: 183 [2022-03-03 18:41:50,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=487, Invalid=2063, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 18:41:50,202 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 176 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:50,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 144 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:50,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-03-03 18:41:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 87. [2022-03-03 18:41:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 2.116279069767442) internal successors, (182), 86 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:50,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2022-03-03 18:41:50,204 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 17 [2022-03-03 18:41:50,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:50,204 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2022-03-03 18:41:50,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:50,204 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2022-03-03 18:41:50,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:50,204 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:50,205 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:50,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:50,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-03 18:41:50,405 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:50,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1995682906, now seen corresponding path program 25 times [2022-03-03 18:41:50,406 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:50,406 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268915218] [2022-03-03 18:41:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:50,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:50,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268915218] [2022-03-03 18:41:50,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268915218] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:50,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151503142] [2022-03-03 18:41:50,504 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:41:50,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:50,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:50,506 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) [2022-03-03 18:41:50,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-03 18:41:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:50,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:50,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151503142] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:50,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:50,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:50,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210259327] [2022-03-03 18:41:50,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:50,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:50,876 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:50,876 INFO L87 Difference]: Start difference. First operand 87 states and 182 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:52,093 INFO L93 Difference]: Finished difference Result 249 states and 465 transitions. [2022-03-03 18:41:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:41:52,093 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:41:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:52,094 INFO L225 Difference]: With dead ends: 249 [2022-03-03 18:41:52,094 INFO L226 Difference]: Without dead ends: 235 [2022-03-03 18:41:52,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=550, Invalid=2420, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:41:52,096 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 219 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:52,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 135 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:41:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-03-03 18:41:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 93. [2022-03-03 18:41:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 2.1739130434782608) internal successors, (200), 92 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 200 transitions. [2022-03-03 18:41:52,099 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 200 transitions. Word has length 17 [2022-03-03 18:41:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:52,099 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 200 transitions. [2022-03-03 18:41:52,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:52,099 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 200 transitions. [2022-03-03 18:41:52,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:52,099 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:52,099 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:52,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:52,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:52,315 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:52,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:52,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2011143702, now seen corresponding path program 26 times [2022-03-03 18:41:52,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:52,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116111920] [2022-03-03 18:41:52,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:52,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:52,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:52,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,409 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:52,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116111920] [2022-03-03 18:41:52,409 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116111920] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:52,409 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975816644] [2022-03-03 18:41:52,409 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:41:52,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:52,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:52,410 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) [2022-03-03 18:41:52,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-03 18:41:52,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:41:52,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:52,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:52,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:52,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975816644] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:52,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:52,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:52,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675019094] [2022-03-03 18:41:52,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:52,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:52,914 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:52,914 INFO L87 Difference]: Start difference. First operand 93 states and 200 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:54,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:54,326 INFO L93 Difference]: Finished difference Result 230 states and 441 transitions. [2022-03-03 18:41:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:41:54,326 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:41:54,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:54,327 INFO L225 Difference]: With dead ends: 230 [2022-03-03 18:41:54,327 INFO L226 Difference]: Without dead ends: 216 [2022-03-03 18:41:54,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=488, Invalid=2164, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:41:54,328 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 153 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:54,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 140 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:41:54,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-03-03 18:41:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 91. [2022-03-03 18:41:54,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 2.1333333333333333) internal successors, (192), 90 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 192 transitions. [2022-03-03 18:41:54,331 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 192 transitions. Word has length 17 [2022-03-03 18:41:54,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:54,331 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 192 transitions. [2022-03-03 18:41:54,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:54,331 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 192 transitions. [2022-03-03 18:41:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:54,331 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:54,331 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:54,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:54,531 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,SelfDestructingSolverStorable30 [2022-03-03 18:41:54,532 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1712368788, now seen corresponding path program 27 times [2022-03-03 18:41:54,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:54,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802685080] [2022-03-03 18:41:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:54,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:54,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:54,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,624 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:54,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802685080] [2022-03-03 18:41:54,624 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802685080] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:54,624 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353624322] [2022-03-03 18:41:54,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:41:54,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:54,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:54,625 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) [2022-03-03 18:41:54,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-03 18:41:54,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:41:54,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:54,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:54,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:54,879 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:54,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:55,080 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:55,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353624322] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:55,080 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:55,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:55,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204840499] [2022-03-03 18:41:55,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:55,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:55,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:55,082 INFO L87 Difference]: Start difference. First operand 91 states and 192 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:56,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:56,121 INFO L93 Difference]: Finished difference Result 176 states and 340 transitions. [2022-03-03 18:41:56,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 18:41:56,121 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:41:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:56,122 INFO L225 Difference]: With dead ends: 176 [2022-03-03 18:41:56,122 INFO L226 Difference]: Without dead ends: 162 [2022-03-03 18:41:56,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=330, Invalid=1562, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 18:41:56,123 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 101 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:56,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 136 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-03-03 18:41:56,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 90. [2022-03-03 18:41:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.1235955056179776) internal successors, (189), 89 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:56,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 189 transitions. [2022-03-03 18:41:56,125 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 189 transitions. Word has length 17 [2022-03-03 18:41:56,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:56,125 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 189 transitions. [2022-03-03 18:41:56,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:41:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 189 transitions. [2022-03-03 18:41:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:56,125 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:56,126 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:56,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:56,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:56,335 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:56,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:56,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1197250078, now seen corresponding path program 28 times [2022-03-03 18:41:56,336 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:56,336 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338594611] [2022-03-03 18:41:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:56,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:56,430 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:56,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338594611] [2022-03-03 18:41:56,430 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338594611] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:56,430 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174360662] [2022-03-03 18:41:56,430 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:41:56,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:56,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:56,431 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) [2022-03-03 18:41:56,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-03 18:41:56,450 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:41:56,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:56,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:56,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:56,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:56,799 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174360662] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:56,799 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:56,799 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-03 18:41:56,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277863593] [2022-03-03 18:41:56,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:56,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 18:41:56,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:56,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 18:41:56,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:41:56,800 INFO L87 Difference]: Start difference. First operand 90 states and 189 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:57,437 INFO L93 Difference]: Finished difference Result 189 states and 358 transitions. [2022-03-03 18:41:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 18:41:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 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 17 [2022-03-03 18:41:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:57,438 INFO L225 Difference]: With dead ends: 189 [2022-03-03 18:41:57,438 INFO L226 Difference]: Without dead ends: 146 [2022-03-03 18:41:57,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=372, Invalid=1608, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:41:57,439 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 146 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:57,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 143 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-03-03 18:41:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 96. [2022-03-03 18:41:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 2.126315789473684) internal successors, (202), 95 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 202 transitions. [2022-03-03 18:41:57,441 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 202 transitions. Word has length 17 [2022-03-03 18:41:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:57,442 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 202 transitions. [2022-03-03 18:41:57,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 202 transitions. [2022-03-03 18:41:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:57,442 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:57,442 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:57,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:57,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:57,643 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:57,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1343983402, now seen corresponding path program 29 times [2022-03-03 18:41:57,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:57,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747222938] [2022-03-03 18:41:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:57,731 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:57,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747222938] [2022-03-03 18:41:57,731 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747222938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:57,731 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223814770] [2022-03-03 18:41:57,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:41:57,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:57,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:57,732 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) [2022-03-03 18:41:57,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-03 18:41:57,752 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:41:57,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:57,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:57,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:57,999 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:57,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:58,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223814770] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:58,195 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:58,195 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:58,195 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953255551] [2022-03-03 18:41:58,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:58,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:58,195 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:58,196 INFO L87 Difference]: Start difference. First operand 96 states and 202 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:41:58,913 INFO L93 Difference]: Finished difference Result 177 states and 344 transitions. [2022-03-03 18:41:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-03 18:41:58,913 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:41:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:41:58,914 INFO L225 Difference]: With dead ends: 177 [2022-03-03 18:41:58,914 INFO L226 Difference]: Without dead ends: 163 [2022-03-03 18:41:58,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=1461, Unknown=0, NotChecked=0, Total=1806 [2022-03-03 18:41:58,915 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 87 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:41:58,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 113 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:41:58,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-03-03 18:41:58,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 100. [2022-03-03 18:41:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.1414141414141414) internal successors, (212), 99 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 212 transitions. [2022-03-03 18:41:58,917 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 212 transitions. Word has length 17 [2022-03-03 18:41:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:41:58,917 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 212 transitions. [2022-03-03 18:41:58,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:41:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 212 transitions. [2022-03-03 18:41:58,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:41:58,918 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:41:58,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:41:58,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-03-03 18:41:59,127 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,SelfDestructingSolverStorable33 [2022-03-03 18:41:59,127 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:41:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:41:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 735310426, now seen corresponding path program 30 times [2022-03-03 18:41:59,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:41:59,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940036750] [2022-03-03 18:41:59,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:41:59,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:41:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:41:59,257 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:59,258 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:41:59,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940036750] [2022-03-03 18:41:59,258 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940036750] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:41:59,258 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660698433] [2022-03-03 18:41:59,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:41:59,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:41:59,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:41:59,259 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) [2022-03-03 18:41:59,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-03 18:41:59,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:41:59,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:41:59,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:41:59,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:41:59,535 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:59,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:41:59,724 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:41:59,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660698433] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:41:59,724 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:41:59,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:41:59,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135496956] [2022-03-03 18:41:59,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:41:59,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:41:59,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:41:59,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:41:59,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:41:59,725 INFO L87 Difference]: Start difference. First operand 100 states and 212 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:00,914 INFO L93 Difference]: Finished difference Result 242 states and 465 transitions. [2022-03-03 18:42:00,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:42:00,914 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:00,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:00,916 INFO L225 Difference]: With dead ends: 242 [2022-03-03 18:42:00,916 INFO L226 Difference]: Without dead ends: 228 [2022-03-03 18:42:00,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=642, Invalid=2550, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:42:00,917 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 162 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:00,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 163 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-03-03 18:42:00,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 102. [2022-03-03 18:42:00,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.1782178217821784) internal successors, (220), 101 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 220 transitions. [2022-03-03 18:42:00,923 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 220 transitions. Word has length 17 [2022-03-03 18:42:00,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:00,924 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 220 transitions. [2022-03-03 18:42:00,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:00,924 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 220 transitions. [2022-03-03 18:42:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:00,924 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:00,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:00,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:01,140 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,SelfDestructingSolverStorable34 [2022-03-03 18:42:01,140 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:01,141 INFO L85 PathProgramCache]: Analyzing trace with hash 750771222, now seen corresponding path program 31 times [2022-03-03 18:42:01,141 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:01,141 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988435153] [2022-03-03 18:42:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:01,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:01,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:01,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988435153] [2022-03-03 18:42:01,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988435153] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:01,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134993003] [2022-03-03 18:42:01,247 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:01,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:01,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:01,248 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) [2022-03-03 18:42:01,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-03 18:42:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:01,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:01,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:01,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:01,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134993003] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:01,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:01,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:01,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219820019] [2022-03-03 18:42:01,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:01,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:01,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:01,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:01,685 INFO L87 Difference]: Start difference. First operand 102 states and 220 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:02,416 INFO L93 Difference]: Finished difference Result 229 states and 453 transitions. [2022-03-03 18:42:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:42:02,417 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:02,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:02,417 INFO L225 Difference]: With dead ends: 229 [2022-03-03 18:42:02,417 INFO L226 Difference]: Without dead ends: 215 [2022-03-03 18:42:02,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 18:42:02,419 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 107 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:02,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 191 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:02,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-03-03 18:42:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 104. [2022-03-03 18:42:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.174757281553398) internal successors, (224), 103 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 224 transitions. [2022-03-03 18:42:02,422 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 224 transitions. Word has length 17 [2022-03-03 18:42:02,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:02,422 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 224 transitions. [2022-03-03 18:42:02,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 224 transitions. [2022-03-03 18:42:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:02,423 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:02,423 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:02,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:02,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-03 18:42:02,639 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:02,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1413486110, now seen corresponding path program 32 times [2022-03-03 18:42:02,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:02,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433932062] [2022-03-03 18:42:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:02,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:02,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:02,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433932062] [2022-03-03 18:42:02,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433932062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:02,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451680968] [2022-03-03 18:42:02,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:02,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:02,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:02,710 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) [2022-03-03 18:42:02,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-03 18:42:02,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:02,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:02,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:02,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:02,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:03,079 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451680968] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:03,079 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:03,079 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:03,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111160838] [2022-03-03 18:42:03,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:03,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:03,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:03,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:03,080 INFO L87 Difference]: Start difference. First operand 104 states and 224 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:04,179 INFO L93 Difference]: Finished difference Result 269 states and 509 transitions. [2022-03-03 18:42:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 18:42:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:04,180 INFO L225 Difference]: With dead ends: 269 [2022-03-03 18:42:04,181 INFO L226 Difference]: Without dead ends: 255 [2022-03-03 18:42:04,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=556, Invalid=2306, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:42:04,181 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 189 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:04,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 194 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-03-03 18:42:04,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 107. [2022-03-03 18:42:04,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.19811320754717) internal successors, (233), 106 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 233 transitions. [2022-03-03 18:42:04,184 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 233 transitions. Word has length 17 [2022-03-03 18:42:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:04,184 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 233 transitions. [2022-03-03 18:42:04,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 233 transitions. [2022-03-03 18:42:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:04,184 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:04,184 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:04,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:04,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:04,393 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1398025314, now seen corresponding path program 33 times [2022-03-03 18:42:04,393 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:04,393 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844207564] [2022-03-03 18:42:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:04,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:04,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:04,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844207564] [2022-03-03 18:42:04,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844207564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:04,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437623725] [2022-03-03 18:42:04,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:04,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:04,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:04,497 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) [2022-03-03 18:42:04,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-03 18:42:04,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:04,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:04,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:04,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:04,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:05,042 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437623725] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:05,042 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:05,043 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:05,043 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434313815] [2022-03-03 18:42:05,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:05,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:05,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:05,043 INFO L87 Difference]: Start difference. First operand 107 states and 233 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:06,263 INFO L93 Difference]: Finished difference Result 262 states and 506 transitions. [2022-03-03 18:42:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:42:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:06,264 INFO L225 Difference]: With dead ends: 262 [2022-03-03 18:42:06,265 INFO L226 Difference]: Without dead ends: 248 [2022-03-03 18:42:06,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=496, Invalid=2156, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:42:06,265 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 142 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:06,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 202 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:06,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-03-03 18:42:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 105. [2022-03-03 18:42:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.1634615384615383) internal successors, (225), 104 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:06,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 225 transitions. [2022-03-03 18:42:06,268 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 225 transitions. Word has length 17 [2022-03-03 18:42:06,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:06,268 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 225 transitions. [2022-03-03 18:42:06,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 225 transitions. [2022-03-03 18:42:06,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:06,268 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:06,268 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:06,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:06,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-03 18:42:06,483 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:06,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:06,484 INFO L85 PathProgramCache]: Analyzing trace with hash -826570508, now seen corresponding path program 34 times [2022-03-03 18:42:06,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:06,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63204090] [2022-03-03 18:42:06,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:06,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:06,550 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:06,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63204090] [2022-03-03 18:42:06,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63204090] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:06,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378360186] [2022-03-03 18:42:06,550 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:06,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:06,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:06,551 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) [2022-03-03 18:42:06,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-03 18:42:06,572 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:06,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:06,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:06,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:06,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:06,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:06,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378360186] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:06,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:06,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:06,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240811040] [2022-03-03 18:42:06,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:06,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:06,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:06,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:06,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:06,976 INFO L87 Difference]: Start difference. First operand 105 states and 225 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:07,557 INFO L93 Difference]: Finished difference Result 190 states and 372 transitions. [2022-03-03 18:42:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 18:42:07,557 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:07,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:07,558 INFO L225 Difference]: With dead ends: 190 [2022-03-03 18:42:07,558 INFO L226 Difference]: Without dead ends: 176 [2022-03-03 18:42:07,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=257, Invalid=1225, Unknown=0, NotChecked=0, Total=1482 [2022-03-03 18:42:07,558 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 90 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:07,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 107 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:07,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-03-03 18:42:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 102. [2022-03-03 18:42:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.1485148514851486) internal successors, (217), 101 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 217 transitions. [2022-03-03 18:42:07,561 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 217 transitions. Word has length 17 [2022-03-03 18:42:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:07,561 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 217 transitions. [2022-03-03 18:42:07,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:07,561 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 217 transitions. [2022-03-03 18:42:07,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:07,561 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:07,561 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:07,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:07,771 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,SelfDestructingSolverStorable38 [2022-03-03 18:42:07,771 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1787389598, now seen corresponding path program 35 times [2022-03-03 18:42:07,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:07,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206976900] [2022-03-03 18:42:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:07,873 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:07,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206976900] [2022-03-03 18:42:07,874 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206976900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:07,874 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004773127] [2022-03-03 18:42:07,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:07,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:07,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:07,877 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) [2022-03-03 18:42:07,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-03 18:42:07,896 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:07,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:07,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:07,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:08,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:08,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:08,356 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004773127] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:08,356 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:08,356 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:08,356 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594647493] [2022-03-03 18:42:08,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:08,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:08,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:08,357 INFO L87 Difference]: Start difference. First operand 102 states and 217 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:09,904 INFO L93 Difference]: Finished difference Result 307 states and 572 transitions. [2022-03-03 18:42:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:42:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:09,906 INFO L225 Difference]: With dead ends: 307 [2022-03-03 18:42:09,906 INFO L226 Difference]: Without dead ends: 293 [2022-03-03 18:42:09,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1224 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=697, Invalid=3463, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 18:42:09,906 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 202 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:09,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 224 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:09,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-03-03 18:42:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 107. [2022-03-03 18:42:09,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.2169811320754715) internal successors, (235), 106 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 235 transitions. [2022-03-03 18:42:09,909 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 235 transitions. Word has length 17 [2022-03-03 18:42:09,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:09,910 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 235 transitions. [2022-03-03 18:42:09,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:09,910 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 235 transitions. [2022-03-03 18:42:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:09,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:09,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:09,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:10,123 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,SelfDestructingSolverStorable39 [2022-03-03 18:42:10,123 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1802850394, now seen corresponding path program 36 times [2022-03-03 18:42:10,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:10,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124956839] [2022-03-03 18:42:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:10,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:10,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124956839] [2022-03-03 18:42:10,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124956839] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:10,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190011355] [2022-03-03 18:42:10,215 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:10,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:10,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:10,216 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) [2022-03-03 18:42:10,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-03 18:42:10,234 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:10,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:10,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:10,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:10,372 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:10,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:10,499 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:10,499 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190011355] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:10,499 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:10,499 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:10,499 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550574931] [2022-03-03 18:42:10,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:10,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:10,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:10,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:10,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:10,502 INFO L87 Difference]: Start difference. First operand 107 states and 235 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:11,706 INFO L93 Difference]: Finished difference Result 314 states and 592 transitions. [2022-03-03 18:42:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-03 18:42:11,706 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:11,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:11,707 INFO L225 Difference]: With dead ends: 314 [2022-03-03 18:42:11,707 INFO L226 Difference]: Without dead ends: 300 [2022-03-03 18:42:11,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=803, Invalid=3619, Unknown=0, NotChecked=0, Total=4422 [2022-03-03 18:42:11,708 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 203 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:11,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [203 Valid, 290 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:11,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-03 18:42:11,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 106. [2022-03-03 18:42:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.2) internal successors, (231), 105 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 231 transitions. [2022-03-03 18:42:11,710 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 231 transitions. Word has length 17 [2022-03-03 18:42:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:11,710 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 231 transitions. [2022-03-03 18:42:11,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 231 transitions. [2022-03-03 18:42:11,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:11,711 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:11,711 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:11,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:11,926 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,SelfDestructingSolverStorable40 [2022-03-03 18:42:11,926 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1920662096, now seen corresponding path program 37 times [2022-03-03 18:42:11,927 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:11,927 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188830345] [2022-03-03 18:42:11,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:11,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:11,987 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:11,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188830345] [2022-03-03 18:42:11,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188830345] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:11,987 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987895756] [2022-03-03 18:42:11,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:11,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:11,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:11,988 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) [2022-03-03 18:42:11,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-03 18:42:12,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:12,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:12,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:12,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:12,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987895756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:12,335 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:12,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:12,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161445733] [2022-03-03 18:42:12,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:12,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:12,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:12,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:12,336 INFO L87 Difference]: Start difference. First operand 106 states and 231 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:13,219 INFO L93 Difference]: Finished difference Result 235 states and 453 transitions. [2022-03-03 18:42:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:42:13,219 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:13,220 INFO L225 Difference]: With dead ends: 235 [2022-03-03 18:42:13,220 INFO L226 Difference]: Without dead ends: 221 [2022-03-03 18:42:13,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=424, Invalid=2026, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:42:13,221 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 131 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:13,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 214 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2022-03-03 18:42:13,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 105. [2022-03-03 18:42:13,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 2.1923076923076925) internal successors, (228), 104 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:13,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 228 transitions. [2022-03-03 18:42:13,236 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 228 transitions. Word has length 17 [2022-03-03 18:42:13,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:13,237 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 228 transitions. [2022-03-03 18:42:13,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:13,237 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 228 transitions. [2022-03-03 18:42:13,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:13,237 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:13,237 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:13,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:13,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:13,453 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:13,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash -483246562, now seen corresponding path program 38 times [2022-03-03 18:42:13,453 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:13,453 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445339838] [2022-03-03 18:42:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:13,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:13,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:13,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:13,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445339838] [2022-03-03 18:42:13,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445339838] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:13,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414959159] [2022-03-03 18:42:13,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:13,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:13,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:13,548 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) [2022-03-03 18:42:13,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-03 18:42:13,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:13,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:13,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:13,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:13,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:14,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414959159] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:14,067 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:14,067 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-03 18:42:14,067 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247314225] [2022-03-03 18:42:14,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:14,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 18:42:14,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:14,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 18:42:14,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:42:14,067 INFO L87 Difference]: Start difference. First operand 105 states and 228 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:15,081 INFO L93 Difference]: Finished difference Result 241 states and 464 transitions. [2022-03-03 18:42:15,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:42:15,081 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 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 17 [2022-03-03 18:42:15,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:15,082 INFO L225 Difference]: With dead ends: 241 [2022-03-03 18:42:15,082 INFO L226 Difference]: Without dead ends: 206 [2022-03-03 18:42:15,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 670 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=527, Invalid=2125, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:42:15,082 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 151 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:15,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 170 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-03-03 18:42:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 109. [2022-03-03 18:42:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 2.2314814814814814) internal successors, (241), 108 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:15,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 241 transitions. [2022-03-03 18:42:15,085 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 241 transitions. Word has length 17 [2022-03-03 18:42:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:15,085 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 241 transitions. [2022-03-03 18:42:15,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 241 transitions. [2022-03-03 18:42:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:15,086 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:15,086 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:15,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:15,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:15,295 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:15,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash -865966950, now seen corresponding path program 39 times [2022-03-03 18:42:15,296 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:15,296 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539751980] [2022-03-03 18:42:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:15,387 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:15,387 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:15,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539751980] [2022-03-03 18:42:15,387 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539751980] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:15,387 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569373083] [2022-03-03 18:42:15,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:15,388 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) [2022-03-03 18:42:15,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-03 18:42:15,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:15,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:15,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:15,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:15,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:15,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:15,859 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569373083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:15,859 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:15,859 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-03 18:42:15,859 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361133297] [2022-03-03 18:42:15,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:15,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 18:42:15,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:15,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 18:42:15,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:42:15,860 INFO L87 Difference]: Start difference. First operand 109 states and 241 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:16,524 INFO L93 Difference]: Finished difference Result 223 states and 443 transitions. [2022-03-03 18:42:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:42:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 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 17 [2022-03-03 18:42:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:16,525 INFO L225 Difference]: With dead ends: 223 [2022-03-03 18:42:16,526 INFO L226 Difference]: Without dead ends: 209 [2022-03-03 18:42:16,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=439, Invalid=1817, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:42:16,526 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 132 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:16,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 197 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-03-03 18:42:16,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 110. [2022-03-03 18:42:16,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.238532110091743) internal successors, (244), 109 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 244 transitions. [2022-03-03 18:42:16,529 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 244 transitions. Word has length 17 [2022-03-03 18:42:16,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:16,529 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 244 transitions. [2022-03-03 18:42:16,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 244 transitions. [2022-03-03 18:42:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:16,529 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:16,529 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:16,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:16,744 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,SelfDestructingSolverStorable43 [2022-03-03 18:42:16,745 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:16,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:16,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1213326878, now seen corresponding path program 40 times [2022-03-03 18:42:16,745 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:16,745 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560925752] [2022-03-03 18:42:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:16,822 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:16,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560925752] [2022-03-03 18:42:16,822 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560925752] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:16,822 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332184820] [2022-03-03 18:42:16,822 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:16,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:16,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:16,824 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) [2022-03-03 18:42:16,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-03-03 18:42:16,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:16,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:16,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:16,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:17,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:17,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:17,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:17,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332184820] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:17,297 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:17,297 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-03 18:42:17,297 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353306060] [2022-03-03 18:42:17,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:17,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 18:42:17,297 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:17,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 18:42:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:42:17,298 INFO L87 Difference]: Start difference. First operand 110 states and 244 transitions. Second operand has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:18,932 INFO L93 Difference]: Finished difference Result 304 states and 586 transitions. [2022-03-03 18:42:18,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:42:18,932 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 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 17 [2022-03-03 18:42:18,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:18,933 INFO L225 Difference]: With dead ends: 304 [2022-03-03 18:42:18,933 INFO L226 Difference]: Without dead ends: 290 [2022-03-03 18:42:18,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1174 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=817, Invalid=3089, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:42:18,934 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 206 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:18,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 248 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:18,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-03-03 18:42:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 112. [2022-03-03 18:42:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.27027027027027) internal successors, (252), 111 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 252 transitions. [2022-03-03 18:42:18,948 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 252 transitions. Word has length 17 [2022-03-03 18:42:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:18,948 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 252 transitions. [2022-03-03 18:42:18,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7826086956521738) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:18,948 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 252 transitions. [2022-03-03 18:42:18,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:18,949 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:18,949 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:18,964 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-03-03 18:42:19,164 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,SelfDestructingSolverStorable44 [2022-03-03 18:42:19,165 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:19,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:19,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1228787674, now seen corresponding path program 41 times [2022-03-03 18:42:19,165 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:19,165 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612895375] [2022-03-03 18:42:19,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:19,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:19,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:19,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:19,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612895375] [2022-03-03 18:42:19,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612895375] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:19,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737647811] [2022-03-03 18:42:19,262 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:19,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:19,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:19,263 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) [2022-03-03 18:42:19,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-03-03 18:42:19,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:42:19,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:19,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:19,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:19,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737647811] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:19,743 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:19,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-03-03 18:42:19,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388988251] [2022-03-03 18:42:19,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-03 18:42:19,743 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:19,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-03 18:42:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2022-03-03 18:42:19,744 INFO L87 Difference]: Start difference. First operand 112 states and 252 transitions. Second operand has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 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) [2022-03-03 18:42:20,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:20,804 INFO L93 Difference]: Finished difference Result 266 states and 524 transitions. [2022-03-03 18:42:20,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:42:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 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 17 [2022-03-03 18:42:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:20,805 INFO L225 Difference]: With dead ends: 266 [2022-03-03 18:42:20,805 INFO L226 Difference]: Without dead ends: 252 [2022-03-03 18:42:20,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=714, Invalid=2708, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:42:20,806 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 232 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:20,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 151 Invalid, 632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:20,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-03-03 18:42:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 110. [2022-03-03 18:42:20,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.2477064220183487) internal successors, (245), 109 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:20,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 245 transitions. [2022-03-03 18:42:20,808 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 245 transitions. Word has length 17 [2022-03-03 18:42:20,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:20,809 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 245 transitions. [2022-03-03 18:42:20,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 22 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) [2022-03-03 18:42:20,809 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 245 transitions. [2022-03-03 18:42:20,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:20,809 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:20,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:20,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-03-03 18:42:21,009 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,SelfDestructingSolverStorable45 [2022-03-03 18:42:21,010 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:21,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1836449622, now seen corresponding path program 42 times [2022-03-03 18:42:21,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:21,010 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15762468] [2022-03-03 18:42:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:21,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:21,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:21,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:21,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15762468] [2022-03-03 18:42:21,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15762468] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:21,108 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780873346] [2022-03-03 18:42:21,108 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:21,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:21,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:21,109 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) [2022-03-03 18:42:21,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-03-03 18:42:21,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:42:21,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:21,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:21,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:21,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:21,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780873346] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:21,507 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:21,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:21,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183675994] [2022-03-03 18:42:21,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:21,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:21,507 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:21,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:21,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:21,508 INFO L87 Difference]: Start difference. First operand 110 states and 245 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:22,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:22,375 INFO L93 Difference]: Finished difference Result 248 states and 481 transitions. [2022-03-03 18:42:22,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:42:22,376 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:22,376 INFO L225 Difference]: With dead ends: 248 [2022-03-03 18:42:22,377 INFO L226 Difference]: Without dead ends: 227 [2022-03-03 18:42:22,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=420, Invalid=2130, Unknown=0, NotChecked=0, Total=2550 [2022-03-03 18:42:22,380 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 146 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:22,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 196 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-03-03 18:42:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 116. [2022-03-03 18:42:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.217391304347826) internal successors, (255), 115 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:22,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 255 transitions. [2022-03-03 18:42:22,387 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 255 transitions. Word has length 17 [2022-03-03 18:42:22,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:22,387 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 255 transitions. [2022-03-03 18:42:22,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:22,387 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 255 transitions. [2022-03-03 18:42:22,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:22,388 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:22,388 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:22,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:22,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:22,603 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:22,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:22,604 INFO L85 PathProgramCache]: Analyzing trace with hash 913134938, now seen corresponding path program 43 times [2022-03-03 18:42:22,604 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:22,604 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802634488] [2022-03-03 18:42:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:22,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:22,706 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:22,706 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:22,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802634488] [2022-03-03 18:42:22,706 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802634488] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:22,706 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954824917] [2022-03-03 18:42:22,706 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:22,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:22,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:22,707 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) [2022-03-03 18:42:22,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-03-03 18:42:22,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:22,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:23,177 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:23,177 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954824917] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:23,177 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:23,177 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:23,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831043716] [2022-03-03 18:42:23,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:23,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:23,178 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:23,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:23,178 INFO L87 Difference]: Start difference. First operand 116 states and 255 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:24,476 INFO L93 Difference]: Finished difference Result 288 states and 577 transitions. [2022-03-03 18:42:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:42:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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 17 [2022-03-03 18:42:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:24,478 INFO L225 Difference]: With dead ends: 288 [2022-03-03 18:42:24,478 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 18:42:24,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 879 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=613, Invalid=2357, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:42:24,478 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 158 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 974 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:24,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 256 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 974 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:42:24,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 18:42:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 124. [2022-03-03 18:42:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.3008130081300813) internal successors, (283), 123 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 283 transitions. [2022-03-03 18:42:24,481 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 283 transitions. Word has length 17 [2022-03-03 18:42:24,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:24,481 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 283 transitions. [2022-03-03 18:42:24,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:24,481 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 283 transitions. [2022-03-03 18:42:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:24,481 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:24,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:24,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:24,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-03-03 18:42:24,687 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 928595734, now seen corresponding path program 44 times [2022-03-03 18:42:24,688 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:24,688 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834171155] [2022-03-03 18:42:24,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:24,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:24,793 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:24,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834171155] [2022-03-03 18:42:24,793 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834171155] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:24,793 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341610900] [2022-03-03 18:42:24,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:24,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:24,804 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) [2022-03-03 18:42:24,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-03-03 18:42:24,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:24,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:24,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:24,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:25,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:25,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:25,285 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341610900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:25,285 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:25,285 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:25,285 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321521062] [2022-03-03 18:42:25,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:25,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:25,285 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:25,286 INFO L87 Difference]: Start difference. First operand 124 states and 283 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:26,785 INFO L93 Difference]: Finished difference Result 319 states and 637 transitions. [2022-03-03 18:42:26,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:42:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:26,787 INFO L225 Difference]: With dead ends: 319 [2022-03-03 18:42:26,787 INFO L226 Difference]: Without dead ends: 305 [2022-03-03 18:42:26,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1145 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=747, Invalid=2913, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:42:26,787 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 208 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:26,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 198 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:26,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-03-03 18:42:26,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 123. [2022-03-03 18:42:26,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.2868852459016393) internal successors, (279), 122 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:26,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 279 transitions. [2022-03-03 18:42:26,790 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 279 transitions. Word has length 17 [2022-03-03 18:42:26,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:26,790 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 279 transitions. [2022-03-03 18:42:26,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:26,790 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 279 transitions. [2022-03-03 18:42:26,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:26,791 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:26,791 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:26,814 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-03-03 18:42:26,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-03-03 18:42:26,992 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:26,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:26,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1500050540, now seen corresponding path program 45 times [2022-03-03 18:42:26,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:26,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845845415] [2022-03-03 18:42:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:26,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:27,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:27,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845845415] [2022-03-03 18:42:27,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845845415] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:27,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540720136] [2022-03-03 18:42:27,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:27,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:27,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:27,086 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) [2022-03-03 18:42:27,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-03-03 18:42:27,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:27,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:27,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:27,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:27,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540720136] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:27,481 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:27,481 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:27,481 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462877124] [2022-03-03 18:42:27,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:27,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:27,481 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:27,481 INFO L87 Difference]: Start difference. First operand 123 states and 279 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:28,331 INFO L93 Difference]: Finished difference Result 287 states and 582 transitions. [2022-03-03 18:42:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:42:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:28,332 INFO L225 Difference]: With dead ends: 287 [2022-03-03 18:42:28,332 INFO L226 Difference]: Without dead ends: 273 [2022-03-03 18:42:28,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=474, Invalid=1976, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:42:28,333 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 150 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:28,333 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 241 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-03-03 18:42:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 122. [2022-03-03 18:42:28,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.28099173553719) internal successors, (276), 121 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:28,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 276 transitions. [2022-03-03 18:42:28,336 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 276 transitions. Word has length 17 [2022-03-03 18:42:28,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:28,336 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 276 transitions. [2022-03-03 18:42:28,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:28,336 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 276 transitions. [2022-03-03 18:42:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:28,337 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:28,337 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:28,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2022-03-03 18:42:28,553 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,SelfDestructingSolverStorable49 [2022-03-03 18:42:28,553 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:28,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1357501222, now seen corresponding path program 46 times [2022-03-03 18:42:28,553 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:28,553 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937808209] [2022-03-03 18:42:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:28,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:28,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937808209] [2022-03-03 18:42:28,657 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937808209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:28,657 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056236369] [2022-03-03 18:42:28,657 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:28,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:28,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:28,658 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) [2022-03-03 18:42:28,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-03-03 18:42:28,679 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:28,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:28,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:28,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:29,159 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056236369] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:29,159 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:29,159 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:29,159 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588405474] [2022-03-03 18:42:29,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:29,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:29,159 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:29,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:29,160 INFO L87 Difference]: Start difference. First operand 122 states and 276 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:29,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:29,918 INFO L93 Difference]: Finished difference Result 241 states and 483 transitions. [2022-03-03 18:42:29,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:42:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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 17 [2022-03-03 18:42:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:29,919 INFO L225 Difference]: With dead ends: 241 [2022-03-03 18:42:29,919 INFO L226 Difference]: Without dead ends: 227 [2022-03-03 18:42:29,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=368, Invalid=1888, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:42:29,920 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:29,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 188 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:29,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-03-03 18:42:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 123. [2022-03-03 18:42:29,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.3114754098360657) internal successors, (282), 122 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 282 transitions. [2022-03-03 18:42:29,922 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 282 transitions. Word has length 17 [2022-03-03 18:42:29,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:29,922 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 282 transitions. [2022-03-03 18:42:29,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:29,923 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 282 transitions. [2022-03-03 18:42:29,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:29,923 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:29,923 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:29,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:30,134 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,SelfDestructingSolverStorable50 [2022-03-03 18:42:30,135 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:30,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:30,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1740221610, now seen corresponding path program 47 times [2022-03-03 18:42:30,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:30,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250876714] [2022-03-03 18:42:30,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:30,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:30,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:30,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250876714] [2022-03-03 18:42:30,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250876714] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:30,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071286008] [2022-03-03 18:42:30,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:30,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:30,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:30,200 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) [2022-03-03 18:42:30,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-03-03 18:42:30,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:30,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:30,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:30,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:30,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:30,544 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071286008] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:30,544 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:30,544 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:30,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502406964] [2022-03-03 18:42:30,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:30,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:30,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:30,545 INFO L87 Difference]: Start difference. First operand 123 states and 282 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:31,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:31,151 INFO L93 Difference]: Finished difference Result 231 states and 469 transitions. [2022-03-03 18:42:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 18:42:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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 17 [2022-03-03 18:42:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:31,152 INFO L225 Difference]: With dead ends: 231 [2022-03-03 18:42:31,152 INFO L226 Difference]: Without dead ends: 217 [2022-03-03 18:42:31,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=1628, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:42:31,154 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 105 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:31,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 214 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-03-03 18:42:31,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 122. [2022-03-03 18:42:31,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.330578512396694) internal successors, (282), 121 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:31,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 282 transitions. [2022-03-03 18:42:31,159 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 282 transitions. Word has length 17 [2022-03-03 18:42:31,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:31,159 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 282 transitions. [2022-03-03 18:42:31,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:31,159 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 282 transitions. [2022-03-03 18:42:31,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:31,159 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:31,159 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:31,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:31,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:31,375 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:31,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:31,375 INFO L85 PathProgramCache]: Analyzing trace with hash 339072218, now seen corresponding path program 48 times [2022-03-03 18:42:31,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:31,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459972067] [2022-03-03 18:42:31,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:31,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:31,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:31,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:31,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459972067] [2022-03-03 18:42:31,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459972067] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:31,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073390264] [2022-03-03 18:42:31,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:31,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:31,483 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) [2022-03-03 18:42:31,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-03-03 18:42:31,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:31,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:31,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:31,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:31,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:31,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:31,949 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073390264] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:31,949 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:31,949 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:31,949 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134481891] [2022-03-03 18:42:31,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:31,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:31,950 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:31,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:31,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:31,950 INFO L87 Difference]: Start difference. First operand 122 states and 282 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:32,892 INFO L93 Difference]: Finished difference Result 302 states and 600 transitions. [2022-03-03 18:42:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:42:32,892 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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 17 [2022-03-03 18:42:32,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:32,893 INFO L225 Difference]: With dead ends: 302 [2022-03-03 18:42:32,893 INFO L226 Difference]: Without dead ends: 288 [2022-03-03 18:42:32,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=670, Invalid=2752, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:42:32,894 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 200 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:32,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 210 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-03-03 18:42:32,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 123. [2022-03-03 18:42:32,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.3442622950819674) internal successors, (286), 122 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) [2022-03-03 18:42:32,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 286 transitions. [2022-03-03 18:42:32,896 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 286 transitions. Word has length 17 [2022-03-03 18:42:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:32,896 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 286 transitions. [2022-03-03 18:42:32,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 286 transitions. [2022-03-03 18:42:32,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:32,897 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:32,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:32,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:33,112 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,SelfDestructingSolverStorable52 [2022-03-03 18:42:33,113 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:33,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash 354533014, now seen corresponding path program 49 times [2022-03-03 18:42:33,114 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:33,114 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515309436] [2022-03-03 18:42:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:33,194 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:33,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515309436] [2022-03-03 18:42:33,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515309436] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:33,194 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818262500] [2022-03-03 18:42:33,194 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:33,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:33,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:33,196 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) [2022-03-03 18:42:33,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-03-03 18:42:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:33,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:33,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:33,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:33,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818262500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:33,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:33,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:33,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754855015] [2022-03-03 18:42:33,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:33,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:33,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=465, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:33,534 INFO L87 Difference]: Start difference. First operand 123 states and 286 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:34,336 INFO L93 Difference]: Finished difference Result 277 states and 569 transitions. [2022-03-03 18:42:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:42:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:34,337 INFO L225 Difference]: With dead ends: 277 [2022-03-03 18:42:34,337 INFO L226 Difference]: Without dead ends: 263 [2022-03-03 18:42:34,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 875 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=554, Invalid=2308, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:42:34,338 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 150 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:34,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 204 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:34,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-03 18:42:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 122. [2022-03-03 18:42:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.330578512396694) internal successors, (282), 121 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 282 transitions. [2022-03-03 18:42:34,341 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 282 transitions. Word has length 17 [2022-03-03 18:42:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:34,341 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 282 transitions. [2022-03-03 18:42:34,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 282 transitions. [2022-03-03 18:42:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:34,341 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:34,341 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:34,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:34,554 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:34,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:34,554 INFO L85 PathProgramCache]: Analyzing trace with hash 962194962, now seen corresponding path program 50 times [2022-03-03 18:42:34,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:34,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653068902] [2022-03-03 18:42:34,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:34,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:34,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:34,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653068902] [2022-03-03 18:42:34,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653068902] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:34,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793561672] [2022-03-03 18:42:34,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:34,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:34,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:34,641 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) [2022-03-03 18:42:34,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-03-03 18:42:34,660 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:34,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:34,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:34,929 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:34,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:35,122 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793561672] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:35,122 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:35,122 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:35,122 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940482908] [2022-03-03 18:42:35,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:35,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:35,122 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:35,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:35,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:35,123 INFO L87 Difference]: Start difference. First operand 122 states and 282 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:36,206 INFO L93 Difference]: Finished difference Result 288 states and 579 transitions. [2022-03-03 18:42:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:42:36,206 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:36,207 INFO L225 Difference]: With dead ends: 288 [2022-03-03 18:42:36,207 INFO L226 Difference]: Without dead ends: 274 [2022-03-03 18:42:36,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=524, Invalid=2232, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:42:36,211 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 156 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:36,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 185 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:36,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-03-03 18:42:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 127. [2022-03-03 18:42:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 2.2857142857142856) internal successors, (288), 126 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 288 transitions. [2022-03-03 18:42:36,230 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 288 transitions. Word has length 17 [2022-03-03 18:42:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:36,230 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 288 transitions. [2022-03-03 18:42:36,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 288 transitions. [2022-03-03 18:42:36,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:36,231 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:36,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:36,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-03-03 18:42:36,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:36,444 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:36,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1367225546, now seen corresponding path program 51 times [2022-03-03 18:42:36,444 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:36,444 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337633774] [2022-03-03 18:42:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:36,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:36,553 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:36,553 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337633774] [2022-03-03 18:42:36,554 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337633774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:36,554 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187671308] [2022-03-03 18:42:36,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:36,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:36,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:36,568 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) [2022-03-03 18:42:36,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-03-03 18:42:36,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:42:36,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:36,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:36,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:36,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:36,862 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187671308] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:36,862 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:36,862 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:36,862 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264571470] [2022-03-03 18:42:36,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:36,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:36,863 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:36,863 INFO L87 Difference]: Start difference. First operand 127 states and 288 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:37,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:37,378 INFO L93 Difference]: Finished difference Result 243 states and 501 transitions. [2022-03-03 18:42:37,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 18:42:37,378 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:37,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:37,379 INFO L225 Difference]: With dead ends: 243 [2022-03-03 18:42:37,379 INFO L226 Difference]: Without dead ends: 229 [2022-03-03 18:42:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=418, Invalid=1562, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:42:37,379 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 149 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:37,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 131 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:42:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-03-03 18:42:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 125. [2022-03-03 18:42:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.2661290322580645) internal successors, (281), 124 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 281 transitions. [2022-03-03 18:42:37,381 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 281 transitions. Word has length 17 [2022-03-03 18:42:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 281 transitions. [2022-03-03 18:42:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:37,382 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 281 transitions. [2022-03-03 18:42:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:37,382 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:37,382 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:37,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-03-03 18:42:37,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:37,595 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:37,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:37,596 INFO L85 PathProgramCache]: Analyzing trace with hash -797031786, now seen corresponding path program 52 times [2022-03-03 18:42:37,596 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:37,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280170012] [2022-03-03 18:42:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:37,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:37,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:37,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:37,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280170012] [2022-03-03 18:42:37,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280170012] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:37,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500992208] [2022-03-03 18:42:37,691 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:37,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:37,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:37,692 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) [2022-03-03 18:42:37,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-03-03 18:42:37,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:37,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:37,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:37,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:37,943 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:37,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:38,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:38,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500992208] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:38,111 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:38,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:38,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852261672] [2022-03-03 18:42:38,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:38,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:38,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:38,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:38,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=470, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:38,112 INFO L87 Difference]: Start difference. First operand 125 states and 281 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:38,776 INFO L93 Difference]: Finished difference Result 245 states and 497 transitions. [2022-03-03 18:42:38,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 18:42:38,776 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 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 17 [2022-03-03 18:42:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:38,777 INFO L225 Difference]: With dead ends: 245 [2022-03-03 18:42:38,777 INFO L226 Difference]: Without dead ends: 231 [2022-03-03 18:42:38,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:42:38,777 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 165 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:38,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 147 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:38,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-03-03 18:42:38,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 123. [2022-03-03 18:42:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 2.262295081967213) internal successors, (276), 122 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 276 transitions. [2022-03-03 18:42:38,780 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 276 transitions. Word has length 17 [2022-03-03 18:42:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:38,780 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 276 transitions. [2022-03-03 18:42:38,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 276 transitions. [2022-03-03 18:42:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:38,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:38,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:38,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:38,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:38,996 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:38,996 INFO L85 PathProgramCache]: Analyzing trace with hash -781570990, now seen corresponding path program 53 times [2022-03-03 18:42:38,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:38,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137726536] [2022-03-03 18:42:38,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:38,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:39,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:39,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137726536] [2022-03-03 18:42:39,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137726536] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:39,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755436960] [2022-03-03 18:42:39,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:39,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:39,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:39,096 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) [2022-03-03 18:42:39,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-03-03 18:42:39,114 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:42:39,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:39,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:39,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:39,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:39,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:39,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755436960] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:39,571 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:39,571 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:39,571 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486225460] [2022-03-03 18:42:39,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:39,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:39,571 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:39,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:39,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:39,571 INFO L87 Difference]: Start difference. First operand 123 states and 276 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:40,461 INFO L93 Difference]: Finished difference Result 262 states and 528 transitions. [2022-03-03 18:42:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-03 18:42:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:40,463 INFO L225 Difference]: With dead ends: 262 [2022-03-03 18:42:40,463 INFO L226 Difference]: Without dead ends: 248 [2022-03-03 18:42:40,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 565 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=1569, Unknown=0, NotChecked=0, Total=1980 [2022-03-03 18:42:40,463 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 169 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:40,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 149 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:40,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-03-03 18:42:40,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 122. [2022-03-03 18:42:40,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.2479338842975207) internal successors, (272), 121 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 272 transitions. [2022-03-03 18:42:40,466 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 272 transitions. Word has length 17 [2022-03-03 18:42:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:40,466 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 272 transitions. [2022-03-03 18:42:40,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:40,466 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 272 transitions. [2022-03-03 18:42:40,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:40,466 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:40,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:40,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:40,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-03-03 18:42:40,667 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:40,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:40,667 INFO L85 PathProgramCache]: Analyzing trace with hash -210116184, now seen corresponding path program 54 times [2022-03-03 18:42:40,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:40,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759914212] [2022-03-03 18:42:40,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:40,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:40,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:40,765 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:40,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759914212] [2022-03-03 18:42:40,765 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759914212] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:40,765 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649115212] [2022-03-03 18:42:40,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:40,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:40,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:40,766 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) [2022-03-03 18:42:40,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-03-03 18:42:40,784 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:42:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:40,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:40,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:41,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:41,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649115212] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:41,231 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:41,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-03-03 18:42:41,232 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107803567] [2022-03-03 18:42:41,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:41,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-03 18:42:41,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-03 18:42:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-03-03 18:42:41,232 INFO L87 Difference]: Start difference. First operand 122 states and 272 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:41,898 INFO L93 Difference]: Finished difference Result 196 states and 406 transitions. [2022-03-03 18:42:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 18:42:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 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 17 [2022-03-03 18:42:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:41,899 INFO L225 Difference]: With dead ends: 196 [2022-03-03 18:42:41,899 INFO L226 Difference]: Without dead ends: 182 [2022-03-03 18:42:41,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=314, Invalid=1326, Unknown=0, NotChecked=0, Total=1640 [2022-03-03 18:42:41,899 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 114 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:41,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 119 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-03-03 18:42:41,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 122. [2022-03-03 18:42:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.2479338842975207) internal successors, (272), 121 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 272 transitions. [2022-03-03 18:42:41,901 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 272 transitions. Word has length 17 [2022-03-03 18:42:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:41,902 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 272 transitions. [2022-03-03 18:42:41,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 24 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:41,902 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 272 transitions. [2022-03-03 18:42:41,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:41,902 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:41,902 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:41,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-03-03 18:42:42,115 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,SelfDestructingSolverStorable58 [2022-03-03 18:42:42,115 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:42,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash 336092702, now seen corresponding path program 55 times [2022-03-03 18:42:42,116 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:42,116 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745184768] [2022-03-03 18:42:42,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:42,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:42,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:42,195 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:42,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745184768] [2022-03-03 18:42:42,195 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745184768] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:42,195 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712884271] [2022-03-03 18:42:42,195 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:42,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:42,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:42,196 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) [2022-03-03 18:42:42,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-03-03 18:42:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:42,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:42,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:42,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:42,596 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712884271] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:42,596 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:42,596 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:42,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212803179] [2022-03-03 18:42:42,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:42,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:42,597 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:42,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:42,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:42,602 INFO L87 Difference]: Start difference. First operand 122 states and 272 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:43,350 INFO L93 Difference]: Finished difference Result 307 states and 589 transitions. [2022-03-03 18:42:43,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:42:43,350 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:43,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:43,351 INFO L225 Difference]: With dead ends: 307 [2022-03-03 18:42:43,351 INFO L226 Difference]: Without dead ends: 286 [2022-03-03 18:42:43,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=422, Invalid=2230, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:42:43,352 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 194 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:43,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 176 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:43,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-03 18:42:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 132. [2022-03-03 18:42:43,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.282442748091603) internal successors, (299), 131 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 299 transitions. [2022-03-03 18:42:43,370 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 299 transitions. Word has length 17 [2022-03-03 18:42:43,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:43,371 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 299 transitions. [2022-03-03 18:42:43,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 299 transitions. [2022-03-03 18:42:43,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:43,371 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:43,371 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:43,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:43,571 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,SelfDestructingSolverStorable59 [2022-03-03 18:42:43,572 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:43,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:43,572 INFO L85 PathProgramCache]: Analyzing trace with hash -46627686, now seen corresponding path program 56 times [2022-03-03 18:42:43,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:43,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892293438] [2022-03-03 18:42:43,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:43,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:43,632 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:43,633 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:43,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892293438] [2022-03-03 18:42:43,633 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892293438] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:43,633 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793207550] [2022-03-03 18:42:43,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:43,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:43,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:43,635 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) [2022-03-03 18:42:43,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-03-03 18:42:43,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:43,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:43,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:43,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:43,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:43,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:43,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793207550] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:43,986 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:43,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:43,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324433890] [2022-03-03 18:42:43,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:43,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:43,987 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:43,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:43,987 INFO L87 Difference]: Start difference. First operand 132 states and 299 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:44,654 INFO L93 Difference]: Finished difference Result 270 states and 534 transitions. [2022-03-03 18:42:44,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:42:44,655 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:44,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:44,655 INFO L225 Difference]: With dead ends: 270 [2022-03-03 18:42:44,655 INFO L226 Difference]: Without dead ends: 256 [2022-03-03 18:42:44,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=401, Invalid=1951, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:42:44,656 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 152 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:44,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 201 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:44,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-03-03 18:42:44,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 131. [2022-03-03 18:42:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.3) internal successors, (299), 130 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 299 transitions. [2022-03-03 18:42:44,677 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 299 transitions. Word has length 17 [2022-03-03 18:42:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:44,677 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 299 transitions. [2022-03-03 18:42:44,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:44,677 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 299 transitions. [2022-03-03 18:42:44,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:44,677 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:44,677 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:44,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:44,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:44,894 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:44,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2032666142, now seen corresponding path program 57 times [2022-03-03 18:42:44,894 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:44,894 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865283801] [2022-03-03 18:42:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:44,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:44,991 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:44,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865283801] [2022-03-03 18:42:44,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865283801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:44,991 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221690163] [2022-03-03 18:42:44,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:44,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:44,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:44,992 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) [2022-03-03 18:42:45,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:45,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:45,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:45,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:45,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-03-03 18:42:45,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:45,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:45,470 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221690163] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:45,470 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:45,470 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:45,470 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73220960] [2022-03-03 18:42:45,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:45,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:45,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:45,471 INFO L87 Difference]: Start difference. First operand 131 states and 299 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:46,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:46,599 INFO L93 Difference]: Finished difference Result 345 states and 681 transitions. [2022-03-03 18:42:46,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 18:42:46,599 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:46,600 INFO L225 Difference]: With dead ends: 345 [2022-03-03 18:42:46,600 INFO L226 Difference]: Without dead ends: 331 [2022-03-03 18:42:46,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=797, Invalid=3493, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 18:42:46,601 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 223 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:46,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 201 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-03-03 18:42:46,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 133. [2022-03-03 18:42:46,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 2.3257575757575757) internal successors, (307), 132 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 307 transitions. [2022-03-03 18:42:46,604 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 307 transitions. Word has length 17 [2022-03-03 18:42:46,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:46,604 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 307 transitions. [2022-03-03 18:42:46,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 307 transitions. [2022-03-03 18:42:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:46,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:46,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:46,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:46,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:46,819 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2048126938, now seen corresponding path program 58 times [2022-03-03 18:42:46,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:46,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412963861] [2022-03-03 18:42:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:46,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:46,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:46,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:46,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:46,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412963861] [2022-03-03 18:42:46,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412963861] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:46,928 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582436908] [2022-03-03 18:42:46,928 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:46,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:46,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:46,940 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) [2022-03-03 18:42:46,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-03-03 18:42:46,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:46,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:46,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:46,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:47,218 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:47,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:47,429 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582436908] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:47,429 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:47,429 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:47,429 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209418091] [2022-03-03 18:42:47,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:47,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:47,430 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:47,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:47,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:47,430 INFO L87 Difference]: Start difference. First operand 133 states and 307 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:48,667 INFO L93 Difference]: Finished difference Result 325 states and 658 transitions. [2022-03-03 18:42:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:42:48,668 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:48,669 INFO L225 Difference]: With dead ends: 325 [2022-03-03 18:42:48,669 INFO L226 Difference]: Without dead ends: 311 [2022-03-03 18:42:48,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=649, Invalid=3011, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:42:48,669 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 190 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:48,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 216 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:48,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-03-03 18:42:48,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 130. [2022-03-03 18:42:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.294573643410853) internal successors, (296), 129 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 296 transitions. [2022-03-03 18:42:48,672 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 296 transitions. Word has length 17 [2022-03-03 18:42:48,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:48,672 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 296 transitions. [2022-03-03 18:42:48,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:48,672 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 296 transitions. [2022-03-03 18:42:48,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:48,672 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:48,672 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:48,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:48,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:48,888 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1234147826, now seen corresponding path program 59 times [2022-03-03 18:42:48,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:48,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513427310] [2022-03-03 18:42:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:48,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:48,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:48,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513427310] [2022-03-03 18:42:48,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513427310] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:48,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825049358] [2022-03-03 18:42:48,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:48,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:48,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:49,012 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) [2022-03-03 18:42:49,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-03-03 18:42:49,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:49,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:49,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:49,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:49,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:49,462 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:49,462 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825049358] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:49,462 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:49,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:49,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698199513] [2022-03-03 18:42:49,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:49,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:49,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:49,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:49,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:49,463 INFO L87 Difference]: Start difference. First operand 130 states and 296 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:50,465 INFO L93 Difference]: Finished difference Result 301 states and 607 transitions. [2022-03-03 18:42:50,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:42:50,466 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:50,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:50,467 INFO L225 Difference]: With dead ends: 301 [2022-03-03 18:42:50,467 INFO L226 Difference]: Without dead ends: 287 [2022-03-03 18:42:50,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=518, Invalid=2134, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:42:50,467 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:50,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 173 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:50,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-03 18:42:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 131. [2022-03-03 18:42:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 2.292307692307692) internal successors, (298), 130 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 298 transitions. [2022-03-03 18:42:50,470 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 298 transitions. Word has length 17 [2022-03-03 18:42:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:50,470 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 298 transitions. [2022-03-03 18:42:50,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:50,470 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 298 transitions. [2022-03-03 18:42:50,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:50,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:50,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:50,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-03-03 18:42:50,671 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,SelfDestructingSolverStorable63 [2022-03-03 18:42:50,671 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:50,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:50,671 INFO L85 PathProgramCache]: Analyzing trace with hash 896562138, now seen corresponding path program 60 times [2022-03-03 18:42:50,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:50,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086156484] [2022-03-03 18:42:50,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:50,768 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:50,768 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086156484] [2022-03-03 18:42:50,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086156484] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:50,769 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337227240] [2022-03-03 18:42:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:42:50,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:50,770 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) [2022-03-03 18:42:50,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-03-03 18:42:50,792 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:42:50,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:50,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:50,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:51,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:51,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337227240] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:51,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:51,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:51,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845624261] [2022-03-03 18:42:51,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:51,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:51,259 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:51,260 INFO L87 Difference]: Start difference. First operand 131 states and 298 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:52,016 INFO L93 Difference]: Finished difference Result 310 states and 624 transitions. [2022-03-03 18:42:52,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:42:52,016 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:42:52,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:52,018 INFO L225 Difference]: With dead ends: 310 [2022-03-03 18:42:52,018 INFO L226 Difference]: Without dead ends: 296 [2022-03-03 18:42:52,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=414, Invalid=1748, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 18:42:52,018 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 159 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 681 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:52,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 173 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 681 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:52,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-03-03 18:42:52,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 138. [2022-03-03 18:42:52,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.3138686131386863) internal successors, (317), 137 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:52,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 317 transitions. [2022-03-03 18:42:52,022 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 317 transitions. Word has length 17 [2022-03-03 18:42:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:52,022 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 317 transitions. [2022-03-03 18:42:52,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:52,022 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 317 transitions. [2022-03-03 18:42:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:52,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:52,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:52,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:52,247 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 912022934, now seen corresponding path program 61 times [2022-03-03 18:42:52,248 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:52,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529405065] [2022-03-03 18:42:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:52,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:52,342 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:52,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529405065] [2022-03-03 18:42:52,342 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529405065] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:52,342 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086504646] [2022-03-03 18:42:52,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:42:52,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:52,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:52,343 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) [2022-03-03 18:42:52,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-03-03 18:42:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:52,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:52,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:52,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:52,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:52,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086504646] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:52,828 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:52,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:52,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999872408] [2022-03-03 18:42:52,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:52,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:52,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:52,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:52,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:52,829 INFO L87 Difference]: Start difference. First operand 138 states and 317 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:53,786 INFO L93 Difference]: Finished difference Result 339 states and 682 transitions. [2022-03-03 18:42:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:42:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:53,787 INFO L225 Difference]: With dead ends: 339 [2022-03-03 18:42:53,787 INFO L226 Difference]: Without dead ends: 325 [2022-03-03 18:42:53,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:42:53,787 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 167 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:53,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 172 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-03-03 18:42:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 143. [2022-03-03 18:42:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.323943661971831) internal successors, (330), 142 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2022-03-03 18:42:53,790 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 17 [2022-03-03 18:42:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:53,790 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2022-03-03 18:42:53,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2022-03-03 18:42:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:53,790 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:53,790 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:53,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:54,006 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,SelfDestructingSolverStorable65 [2022-03-03 18:42:54,006 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:54,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:54,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1483477740, now seen corresponding path program 62 times [2022-03-03 18:42:54,006 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:54,006 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540708308] [2022-03-03 18:42:54,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:54,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:54,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:54,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540708308] [2022-03-03 18:42:54,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540708308] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:54,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308059843] [2022-03-03 18:42:54,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:42:54,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:54,092 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) [2022-03-03 18:42:54,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-03-03 18:42:54,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:42:54,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:54,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:54,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:54,329 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:54,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:54,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308059843] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:54,461 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:54,461 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:54,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400817060] [2022-03-03 18:42:54,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:54,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:54,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:54,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:54,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:54,462 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:54,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:54,991 INFO L93 Difference]: Finished difference Result 263 states and 539 transitions. [2022-03-03 18:42:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:42:54,991 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:54,992 INFO L225 Difference]: With dead ends: 263 [2022-03-03 18:42:54,992 INFO L226 Difference]: Without dead ends: 249 [2022-03-03 18:42:54,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=368, Invalid=1524, Unknown=0, NotChecked=0, Total=1892 [2022-03-03 18:42:54,992 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 121 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:54,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 115 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:42:54,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-03-03 18:42:54,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 141. [2022-03-03 18:42:54,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.3214285714285716) internal successors, (325), 140 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 325 transitions. [2022-03-03 18:42:54,995 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 325 transitions. Word has length 17 [2022-03-03 18:42:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:54,995 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 325 transitions. [2022-03-03 18:42:54,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 325 transitions. [2022-03-03 18:42:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:54,995 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:54,995 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:55,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-03-03 18:42:55,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-03-03 18:42:55,211 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:55,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:55,212 INFO L85 PathProgramCache]: Analyzing trace with hash -348349546, now seen corresponding path program 63 times [2022-03-03 18:42:55,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:55,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304004209] [2022-03-03 18:42:55,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:55,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:55,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:55,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304004209] [2022-03-03 18:42:55,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304004209] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:55,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131961193] [2022-03-03 18:42:55,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:42:55,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:55,309 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) [2022-03-03 18:42:55,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-03-03 18:42:55,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:42:55,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:55,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:55,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:55,616 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:55,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:55,824 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131961193] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:55,824 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:55,824 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:55,824 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779363640] [2022-03-03 18:42:55,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:55,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:55,824 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:55,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:55,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:55,824 INFO L87 Difference]: Start difference. First operand 141 states and 325 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:57,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:57,118 INFO L93 Difference]: Finished difference Result 286 states and 577 transitions. [2022-03-03 18:42:57,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:42:57,118 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:57,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:57,119 INFO L225 Difference]: With dead ends: 286 [2022-03-03 18:42:57,119 INFO L226 Difference]: Without dead ends: 272 [2022-03-03 18:42:57,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=502, Invalid=2254, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:42:57,120 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 137 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:57,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 155 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:57,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-03 18:42:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 143. [2022-03-03 18:42:57,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.323943661971831) internal successors, (330), 142 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:42:57,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 330 transitions. [2022-03-03 18:42:57,123 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 330 transitions. Word has length 17 [2022-03-03 18:42:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:57,123 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 330 transitions. [2022-03-03 18:42:57,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:57,123 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 330 transitions. [2022-03-03 18:42:57,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:57,123 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:57,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:57,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-03-03 18:42:57,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-03-03 18:42:57,339 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:57,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:57,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1797821214, now seen corresponding path program 64 times [2022-03-03 18:42:57,339 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:57,339 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898682184] [2022-03-03 18:42:57,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:57,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:57,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:57,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898682184] [2022-03-03 18:42:57,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898682184] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:57,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2589559] [2022-03-03 18:42:57,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:42:57,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:57,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:57,447 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) [2022-03-03 18:42:57,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-03-03 18:42:57,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:42:57,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:57,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:57,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:57,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:57,967 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2589559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:57,967 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:57,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:57,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340414282] [2022-03-03 18:42:57,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:57,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:57,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:57,968 INFO L87 Difference]: Start difference. First operand 143 states and 330 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:59,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:42:59,264 INFO L93 Difference]: Finished difference Result 325 states and 646 transitions. [2022-03-03 18:42:59,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-03 18:42:59,265 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:42:59,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:42:59,266 INFO L225 Difference]: With dead ends: 325 [2022-03-03 18:42:59,266 INFO L226 Difference]: Without dead ends: 311 [2022-03-03 18:42:59,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 908 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=598, Invalid=2708, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:42:59,266 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 174 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:42:59,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 185 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:42:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-03-03 18:42:59,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 144. [2022-03-03 18:42:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.3146853146853146) internal successors, (331), 143 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) [2022-03-03 18:42:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2022-03-03 18:42:59,269 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 17 [2022-03-03 18:42:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:42:59,269 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2022-03-03 18:42:59,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:42:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2022-03-03 18:42:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:42:59,269 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:42:59,269 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:42:59,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-03-03 18:42:59,484 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,SelfDestructingSolverStorable68 [2022-03-03 18:42:59,485 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:42:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:42:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1925691276, now seen corresponding path program 65 times [2022-03-03 18:42:59,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:42:59,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472012776] [2022-03-03 18:42:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:42:59,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:42:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:42:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:59,548 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:42:59,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472012776] [2022-03-03 18:42:59,548 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472012776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:42:59,548 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920643516] [2022-03-03 18:42:59,548 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:42:59,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:42:59,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:42:59,550 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) [2022-03-03 18:42:59,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-03-03 18:42:59,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-03-03 18:42:59,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:42:59,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:42:59,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:42:59,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:59,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:42:59,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:42:59,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920643516] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:42:59,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:42:59,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:42:59,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832402497] [2022-03-03 18:42:59,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:42:59,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:42:59,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:42:59,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:42:59,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=453, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:42:59,921 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:00,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:00,908 INFO L93 Difference]: Finished difference Result 250 states and 512 transitions. [2022-03-03 18:43:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 18:43:00,908 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:43:00,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:00,909 INFO L225 Difference]: With dead ends: 250 [2022-03-03 18:43:00,909 INFO L226 Difference]: Without dead ends: 236 [2022-03-03 18:43:00,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=397, Invalid=1859, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:43:00,909 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 100 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:00,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 140 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-03-03 18:43:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 144. [2022-03-03 18:43:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.3146853146853146) internal successors, (331), 143 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) [2022-03-03 18:43:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2022-03-03 18:43:00,912 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 17 [2022-03-03 18:43:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:00,912 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2022-03-03 18:43:00,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2022-03-03 18:43:00,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:43:00,912 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:00,912 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:00,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-03-03 18:43:01,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:01,127 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash 688268830, now seen corresponding path program 66 times [2022-03-03 18:43:01,128 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:01,128 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642314506] [2022-03-03 18:43:01,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:01,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:01,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:01,232 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:01,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642314506] [2022-03-03 18:43:01,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642314506] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:01,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40431121] [2022-03-03 18:43:01,233 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:43:01,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:01,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:01,234 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) [2022-03-03 18:43:01,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-03-03 18:43:01,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-03-03 18:43:01,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:01,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:43:01,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:01,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:01,651 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40431121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:01,651 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:01,651 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:43:01,651 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585205158] [2022-03-03 18:43:01,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:01,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:43:01,651 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:43:01,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:43:01,652 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:02,841 INFO L93 Difference]: Finished difference Result 365 states and 728 transitions. [2022-03-03 18:43:02,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:43:02,841 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 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 17 [2022-03-03 18:43:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:02,843 INFO L225 Difference]: With dead ends: 365 [2022-03-03 18:43:02,843 INFO L226 Difference]: Without dead ends: 351 [2022-03-03 18:43:02,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=499, Invalid=2153, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:43:02,844 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 217 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:02,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 189 Invalid, 805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:02,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-03-03 18:43:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 150. [2022-03-03 18:43:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.3624161073825505) internal successors, (352), 149 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:02,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 352 transitions. [2022-03-03 18:43:02,864 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 352 transitions. Word has length 17 [2022-03-03 18:43:02,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:02,864 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 352 transitions. [2022-03-03 18:43:02,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 23 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 352 transitions. [2022-03-03 18:43:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:43:02,864 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:02,864 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:02,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:03,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:03,080 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:03,080 INFO L85 PathProgramCache]: Analyzing trace with hash 703729626, now seen corresponding path program 67 times [2022-03-03 18:43:03,080 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:03,080 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533203243] [2022-03-03 18:43:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:03,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:03,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533203243] [2022-03-03 18:43:03,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533203243] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:03,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523295335] [2022-03-03 18:43:03,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:43:03,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:03,178 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) [2022-03-03 18:43:03,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-03-03 18:43:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:03,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:43:03,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:03,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:03,684 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523295335] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:03,684 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:03,684 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:43:03,684 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747297525] [2022-03-03 18:43:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:03,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:43:03,684 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:43:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:43:03,684 INFO L87 Difference]: Start difference. First operand 150 states and 352 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:05,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:05,395 INFO L93 Difference]: Finished difference Result 383 states and 757 transitions. [2022-03-03 18:43:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:43:05,396 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:43:05,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:05,397 INFO L225 Difference]: With dead ends: 383 [2022-03-03 18:43:05,397 INFO L226 Difference]: Without dead ends: 369 [2022-03-03 18:43:05,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=631, Invalid=2909, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:43:05,397 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 199 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:05,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 233 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-03 18:43:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-03-03 18:43:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 150. [2022-03-03 18:43:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.3557046979865772) internal successors, (351), 149 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:05,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 351 transitions. [2022-03-03 18:43:05,400 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 351 transitions. Word has length 17 [2022-03-03 18:43:05,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:05,400 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 351 transitions. [2022-03-03 18:43:05,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:05,400 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 351 transitions. [2022-03-03 18:43:05,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:43:05,401 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:05,401 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:05,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-03-03 18:43:05,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:05,616 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:05,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:05,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1275184432, now seen corresponding path program 68 times [2022-03-03 18:43:05,617 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:05,617 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724601909] [2022-03-03 18:43:05,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:05,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:05,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:05,703 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:05,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724601909] [2022-03-03 18:43:05,703 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724601909] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:05,703 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720879599] [2022-03-03 18:43:05,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:43:05,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:05,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:05,705 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) [2022-03-03 18:43:05,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-03-03 18:43:05,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:43:05,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:05,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:43:05,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:05,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:06,145 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720879599] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:06,145 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:06,145 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:43:06,145 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150501595] [2022-03-03 18:43:06,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:06,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:43:06,145 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:43:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:43:06,146 INFO L87 Difference]: Start difference. First operand 150 states and 351 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:07,303 INFO L93 Difference]: Finished difference Result 329 states and 654 transitions. [2022-03-03 18:43:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:43:07,303 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:43:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:07,307 INFO L225 Difference]: With dead ends: 329 [2022-03-03 18:43:07,307 INFO L226 Difference]: Without dead ends: 315 [2022-03-03 18:43:07,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=493, Invalid=2369, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:43:07,308 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 187 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:07,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 176 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-03-03 18:43:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-03-03 18:43:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 149. [2022-03-03 18:43:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.3513513513513513) internal successors, (348), 148 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 348 transitions. [2022-03-03 18:43:07,310 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 348 transitions. Word has length 17 [2022-03-03 18:43:07,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:07,311 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 348 transitions. [2022-03-03 18:43:07,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 348 transitions. [2022-03-03 18:43:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:43:07,311 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:07,311 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:07,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:07,526 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,SelfDestructingSolverStorable72 [2022-03-03 18:43:07,526 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1582367330, now seen corresponding path program 3 times [2022-03-03 18:43:07,527 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:07,527 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618614033] [2022-03-03 18:43:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:07,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:07,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:07,588 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:07,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618614033] [2022-03-03 18:43:07,588 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618614033] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:07,588 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558419619] [2022-03-03 18:43:07,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:07,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:07,590 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) [2022-03-03 18:43:07,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-03-03 18:43:07,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:43:07,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:07,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-03 18:43:07,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:07,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:07,842 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558419619] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:07,842 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:07,842 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-03-03 18:43:07,842 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514902679] [2022-03-03 18:43:07,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:07,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-03 18:43:07,842 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-03 18:43:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-03-03 18:43:07,843 INFO L87 Difference]: Start difference. First operand 149 states and 348 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:08,008 INFO L93 Difference]: Finished difference Result 190 states and 411 transitions. [2022-03-03 18:43:08,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 18:43:08,009 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 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 17 [2022-03-03 18:43:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:08,009 INFO L225 Difference]: With dead ends: 190 [2022-03-03 18:43:08,009 INFO L226 Difference]: Without dead ends: 164 [2022-03-03 18:43:08,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2022-03-03 18:43:08,010 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 85 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:08,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 134 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 18:43:08,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-03-03 18:43:08,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 149. [2022-03-03 18:43:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 2.304054054054054) internal successors, (341), 148 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 341 transitions. [2022-03-03 18:43:08,012 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 341 transitions. Word has length 17 [2022-03-03 18:43:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:08,012 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 341 transitions. [2022-03-03 18:43:08,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 341 transitions. [2022-03-03 18:43:08,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-03 18:43:08,013 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:08,013 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:08,036 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-03-03 18:43:08,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:08,223 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:08,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash 737328854, now seen corresponding path program 69 times [2022-03-03 18:43:08,224 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:08,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528717125] [2022-03-03 18:43:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:08,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:08,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:08,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528717125] [2022-03-03 18:43:08,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528717125] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:08,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806585065] [2022-03-03 18:43:08,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:08,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:08,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:08,288 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) [2022-03-03 18:43:08,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-03-03 18:43:08,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:43:08,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:08,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-03 18:43:08,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:08,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:08,622 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806585065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:08,622 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:08,622 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-03-03 18:43:08,622 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296106236] [2022-03-03 18:43:08,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:08,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-03 18:43:08,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-03 18:43:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-03-03 18:43:08,623 INFO L87 Difference]: Start difference. First operand 149 states and 341 transitions. Second operand has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:09,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:09,538 INFO L93 Difference]: Finished difference Result 298 states and 599 transitions. [2022-03-03 18:43:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 18:43:09,538 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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 17 [2022-03-03 18:43:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:09,539 INFO L225 Difference]: With dead ends: 298 [2022-03-03 18:43:09,539 INFO L226 Difference]: Without dead ends: 284 [2022-03-03 18:43:09,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=528, Invalid=2778, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:43:09,540 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 181 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 756 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:09,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 171 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 756 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-03 18:43:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-03 18:43:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 152. [2022-03-03 18:43:09,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.271523178807947) internal successors, (343), 151 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:09,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 343 transitions. [2022-03-03 18:43:09,543 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 343 transitions. Word has length 17 [2022-03-03 18:43:09,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:09,543 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 343 transitions. [2022-03-03 18:43:09,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 23 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) [2022-03-03 18:43:09,543 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 343 transitions. [2022-03-03 18:43:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:09,543 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:09,543 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:09,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:09,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:09,759 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash -28195700, now seen corresponding path program 70 times [2022-03-03 18:43:09,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:09,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602832436] [2022-03-03 18:43:09,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:09,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:09,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:09,856 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:09,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602832436] [2022-03-03 18:43:09,856 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602832436] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:09,856 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304888008] [2022-03-03 18:43:09,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:43:09,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:09,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:09,857 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) [2022-03-03 18:43:09,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-03-03 18:43:09,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:43:09,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:09,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:09,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:10,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:10,933 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304888008] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:10,933 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:10,933 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:10,933 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548241772] [2022-03-03 18:43:10,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:10,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:10,934 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:10,934 INFO L87 Difference]: Start difference. First operand 152 states and 343 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:11,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:11,793 INFO L93 Difference]: Finished difference Result 233 states and 484 transitions. [2022-03-03 18:43:11,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-03 18:43:11,793 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:43:11,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:11,794 INFO L225 Difference]: With dead ends: 233 [2022-03-03 18:43:11,794 INFO L226 Difference]: Without dead ends: 226 [2022-03-03 18:43:11,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=258, Invalid=1464, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:43:11,795 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 97 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:11,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 142 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 544 Invalid, 0 Unknown, 43 Unchecked, 0.2s Time] [2022-03-03 18:43:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2022-03-03 18:43:11,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 154. [2022-03-03 18:43:11,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:11,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:43:11,797 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:43:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:11,797 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:43:11,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:43:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:11,797 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:11,797 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:11,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:12,007 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,SelfDestructingSolverStorable75 [2022-03-03 18:43:12,007 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:12,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2051098128, now seen corresponding path program 71 times [2022-03-03 18:43:12,008 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:12,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029161814] [2022-03-03 18:43:12,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:12,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:12,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:12,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:12,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029161814] [2022-03-03 18:43:12,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029161814] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:12,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801888485] [2022-03-03 18:43:12,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:43:12,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:12,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:12,112 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) [2022-03-03 18:43:12,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-03-03 18:43:12,131 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:43:12,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:12,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:12,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:12,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:12,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:15,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:15,935 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801888485] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:15,935 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:15,935 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:15,935 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408316390] [2022-03-03 18:43:15,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:15,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:15,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:15,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:15,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:15,936 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:23,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:23,775 INFO L93 Difference]: Finished difference Result 283 states and 579 transitions. [2022-03-03 18:43:23,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:43:23,776 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:43:23,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:23,777 INFO L225 Difference]: With dead ends: 283 [2022-03-03 18:43:23,777 INFO L226 Difference]: Without dead ends: 276 [2022-03-03 18:43:23,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 703 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=450, Invalid=2306, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:43:23,777 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 166 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:23,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 194 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 801 Invalid, 0 Unknown, 38 Unchecked, 1.8s Time] [2022-03-03 18:43:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-03-03 18:43:23,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 154. [2022-03-03 18:43:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:23,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:43:23,780 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:43:23,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:23,780 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:43:23,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:23,780 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:43:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:23,780 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:23,780 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:23,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-03-03 18:43:23,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-03-03 18:43:23,992 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2066558924, now seen corresponding path program 72 times [2022-03-03 18:43:23,992 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:23,992 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020129587] [2022-03-03 18:43:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:23,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:24,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:24,413 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:24,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020129587] [2022-03-03 18:43:24,413 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020129587] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:24,413 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58836838] [2022-03-03 18:43:24,413 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:43:24,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:24,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:24,414 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) [2022-03-03 18:43:24,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-03-03 18:43:24,436 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:43:24,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:24,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:24,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:25,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:27,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58836838] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:27,312 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:27,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:27,313 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511004354] [2022-03-03 18:43:27,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:27,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:27,313 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:27,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:27,313 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:43:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:33,433 INFO L93 Difference]: Finished difference Result 270 states and 559 transitions. [2022-03-03 18:43:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 18:43:33,433 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:43:33,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:33,434 INFO L225 Difference]: With dead ends: 270 [2022-03-03 18:43:33,434 INFO L226 Difference]: Without dead ends: 263 [2022-03-03 18:43:33,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=384, Invalid=1872, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:43:33,435 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 138 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:33,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 171 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 701 Invalid, 0 Unknown, 86 Unchecked, 1.5s Time] [2022-03-03 18:43:33,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-03-03 18:43:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 152. [2022-03-03 18:43:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.271523178807947) internal successors, (343), 151 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:33,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 343 transitions. [2022-03-03 18:43:33,443 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 343 transitions. Word has length 19 [2022-03-03 18:43:33,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:33,444 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 343 transitions. [2022-03-03 18:43:33,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:43:33,444 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 343 transitions. [2022-03-03 18:43:33,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:33,444 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:33,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:33,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:33,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:33,645 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:33,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1035426080, now seen corresponding path program 73 times [2022-03-03 18:43:33,645 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:33,645 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185221188] [2022-03-03 18:43:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:33,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:34,068 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:34,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185221188] [2022-03-03 18:43:34,068 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185221188] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:34,068 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727774446] [2022-03-03 18:43:34,068 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:43:34,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:34,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:34,069 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) [2022-03-03 18:43:34,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-03-03 18:43:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:34,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:34,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:35,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:37,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727774446] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:37,244 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:37,244 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:37,245 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579765225] [2022-03-03 18:43:37,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:37,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:37,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:37,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:37,245 INFO L87 Difference]: Start difference. First operand 152 states and 343 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:41,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:41,880 INFO L93 Difference]: Finished difference Result 285 states and 574 transitions. [2022-03-03 18:43:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:43:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:43:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:41,881 INFO L225 Difference]: With dead ends: 285 [2022-03-03 18:43:41,881 INFO L226 Difference]: Without dead ends: 278 [2022-03-03 18:43:41,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=340, Invalid=2012, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:43:41,881 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 145 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:41,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 193 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 730 Invalid, 0 Unknown, 43 Unchecked, 1.5s Time] [2022-03-03 18:43:41,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-03 18:43:41,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 153. [2022-03-03 18:43:41,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2828947368421053) internal successors, (347), 152 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:41,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 347 transitions. [2022-03-03 18:43:41,884 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 347 transitions. Word has length 19 [2022-03-03 18:43:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:41,884 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 347 transitions. [2022-03-03 18:43:41,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 347 transitions. [2022-03-03 18:43:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:41,884 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:41,884 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:41,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:42,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:42,085 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:42,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:42,085 INFO L85 PathProgramCache]: Analyzing trace with hash 652705692, now seen corresponding path program 74 times [2022-03-03 18:43:42,085 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:42,085 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382284472] [2022-03-03 18:43:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:42,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:42,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:42,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:42,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382284472] [2022-03-03 18:43:42,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382284472] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:42,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127946744] [2022-03-03 18:43:42,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:43:42,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:42,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:42,487 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) [2022-03-03 18:43:42,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-03-03 18:43:42,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:43:42,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:42,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:42,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:43,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:43,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:45,143 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127946744] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:45,143 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:45,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:45,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292913032] [2022-03-03 18:43:45,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:45,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:45,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:45,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:45,144 INFO L87 Difference]: Start difference. First operand 153 states and 347 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:50,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:43:50,273 INFO L93 Difference]: Finished difference Result 297 states and 594 transitions. [2022-03-03 18:43:50,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:43:50,273 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:43:50,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:43:50,274 INFO L225 Difference]: With dead ends: 297 [2022-03-03 18:43:50,274 INFO L226 Difference]: Without dead ends: 290 [2022-03-03 18:43:50,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=386, Invalid=2266, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:43:50,275 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 141 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:43:50,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 253 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 796 Invalid, 0 Unknown, 85 Unchecked, 1.8s Time] [2022-03-03 18:43:50,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-03-03 18:43:50,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 155. [2022-03-03 18:43:50,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.2857142857142856) internal successors, (352), 154 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:43:50,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 352 transitions. [2022-03-03 18:43:50,277 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 352 transitions. Word has length 19 [2022-03-03 18:43:50,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:43:50,277 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 352 transitions. [2022-03-03 18:43:50,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:43:50,277 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 352 transitions. [2022-03-03 18:43:50,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:43:50,278 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:43:50,278 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:43:50,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2022-03-03 18:43:50,487 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,SelfDestructingSolverStorable79 [2022-03-03 18:43:50,487 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:43:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:43:50,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1562967776, now seen corresponding path program 75 times [2022-03-03 18:43:50,488 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:43:50,488 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459585700] [2022-03-03 18:43:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:43:50,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:43:50,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:43:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:50,909 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:43:50,909 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459585700] [2022-03-03 18:43:50,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459585700] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:43:50,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420810503] [2022-03-03 18:43:50,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:43:50,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:43:50,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:43:50,911 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) [2022-03-03 18:43:50,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-03-03 18:43:50,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:43:50,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:43:50,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:43:50,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:43:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:51,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:43:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:43:53,631 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420810503] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:43:53,631 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:43:53,631 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:43:53,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893655120] [2022-03-03 18:43:53,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:43:53,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:43:53,632 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:43:53,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:43:53,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:43:53,632 INFO L87 Difference]: Start difference. First operand 155 states and 352 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:44:01,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:01,155 INFO L93 Difference]: Finished difference Result 342 states and 680 transitions. [2022-03-03 18:44:01,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:44:01,156 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:44:01,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:01,157 INFO L225 Difference]: With dead ends: 342 [2022-03-03 18:44:01,157 INFO L226 Difference]: Without dead ends: 335 [2022-03-03 18:44:01,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=591, Invalid=3315, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:44:01,157 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 209 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:01,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 268 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1041 Invalid, 0 Unknown, 108 Unchecked, 2.2s Time] [2022-03-03 18:44:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-03-03 18:44:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 155. [2022-03-03 18:44:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.2857142857142856) internal successors, (352), 154 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 352 transitions. [2022-03-03 18:44:01,160 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 352 transitions. Word has length 19 [2022-03-03 18:44:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:01,160 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 352 transitions. [2022-03-03 18:44:01,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:44:01,160 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 352 transitions. [2022-03-03 18:44:01,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:01,161 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:01,161 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:01,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-03-03 18:44:01,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:01,361 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:01,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:01,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1547506980, now seen corresponding path program 76 times [2022-03-03 18:44:01,361 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:01,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390217388] [2022-03-03 18:44:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:01,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:01,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:01,813 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:01,813 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390217388] [2022-03-03 18:44:01,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390217388] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:01,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146283663] [2022-03-03 18:44:01,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:44:01,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:01,815 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) [2022-03-03 18:44:01,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-03-03 18:44:01,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:44:01,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:01,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:01,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:02,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:04,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:04,464 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146283663] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:04,464 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:04,464 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:04,464 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320383763] [2022-03-03 18:44:04,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:04,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:04,465 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:04,465 INFO L87 Difference]: Start difference. First operand 155 states and 352 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:10,780 INFO L93 Difference]: Finished difference Result 334 states and 669 transitions. [2022-03-03 18:44:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:44:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:44:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:10,782 INFO L225 Difference]: With dead ends: 334 [2022-03-03 18:44:10,782 INFO L226 Difference]: Without dead ends: 327 [2022-03-03 18:44:10,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=513, Invalid=2679, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:44:10,782 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 204 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:10,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 225 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 817 Invalid, 0 Unknown, 55 Unchecked, 1.9s Time] [2022-03-03 18:44:10,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-03-03 18:44:10,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 154. [2022-03-03 18:44:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:44:10,785 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:44:10,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:10,785 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:44:10,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:10,785 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:44:10,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:10,785 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:10,785 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:10,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-03-03 18:44:10,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:10,995 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -534814448, now seen corresponding path program 77 times [2022-03-03 18:44:10,996 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:10,996 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978149878] [2022-03-03 18:44:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:11,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:11,436 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:11,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978149878] [2022-03-03 18:44:11,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978149878] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:11,436 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437959126] [2022-03-03 18:44:11,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:44:11,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:11,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:11,438 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) [2022-03-03 18:44:11,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-03-03 18:44:11,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:44:11,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:11,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:11,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:12,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:12,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:13,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437959126] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:13,985 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:13,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:13,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232564016] [2022-03-03 18:44:13,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:13,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:13,985 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:13,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:13,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:13,986 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:19,525 INFO L93 Difference]: Finished difference Result 293 states and 597 transitions. [2022-03-03 18:44:19,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:44:19,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:44:19,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:19,526 INFO L225 Difference]: With dead ends: 293 [2022-03-03 18:44:19,526 INFO L226 Difference]: Without dead ends: 286 [2022-03-03 18:44:19,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=427, Invalid=2225, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:44:19,527 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 145 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:19,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 186 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 810 Invalid, 0 Unknown, 84 Unchecked, 1.9s Time] [2022-03-03 18:44:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-03-03 18:44:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 154. [2022-03-03 18:44:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:19,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:44:19,531 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:44:19,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:19,531 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:44:19,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:19,531 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:44:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:19,531 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:19,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:19,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-03-03 18:44:19,732 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,SelfDestructingSolverStorable82 [2022-03-03 18:44:19,732 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:19,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1595895516, now seen corresponding path program 78 times [2022-03-03 18:44:19,732 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:19,732 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028707996] [2022-03-03 18:44:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:20,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:20,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028707996] [2022-03-03 18:44:20,193 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028707996] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:20,193 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829203382] [2022-03-03 18:44:20,193 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:44:20,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:20,194 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) [2022-03-03 18:44:20,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-03-03 18:44:20,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:44:20,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:20,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:20,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:21,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:23,019 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:23,020 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829203382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:23,020 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:23,020 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:23,020 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478592850] [2022-03-03 18:44:23,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:23,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:23,020 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:23,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:23,021 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:44:28,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:28,828 INFO L93 Difference]: Finished difference Result 324 states and 649 transitions. [2022-03-03 18:44:28,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:44:28,829 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:44:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:28,830 INFO L225 Difference]: With dead ends: 324 [2022-03-03 18:44:28,830 INFO L226 Difference]: Without dead ends: 317 [2022-03-03 18:44:28,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=471, Invalid=2499, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:44:28,830 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 199 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:28,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 184 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 750 Invalid, 0 Unknown, 94 Unchecked, 1.7s Time] [2022-03-03 18:44:28,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-03-03 18:44:28,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 155. [2022-03-03 18:44:28,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.272727272727273) internal successors, (350), 154 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 350 transitions. [2022-03-03 18:44:28,833 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 350 transitions. Word has length 19 [2022-03-03 18:44:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:28,833 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 350 transitions. [2022-03-03 18:44:28,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:44:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 350 transitions. [2022-03-03 18:44:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:28,833 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:28,833 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:28,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2022-03-03 18:44:29,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:29,047 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:29,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:29,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1611356312, now seen corresponding path program 79 times [2022-03-03 18:44:29,048 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:29,048 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688057039] [2022-03-03 18:44:29,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:29,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:29,483 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:29,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688057039] [2022-03-03 18:44:29,483 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688057039] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:29,483 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778503998] [2022-03-03 18:44:29,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:44:29,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:29,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:29,484 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) [2022-03-03 18:44:29,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-03-03 18:44:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:29,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:29,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:30,413 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:30,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:31,916 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778503998] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:31,916 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:31,916 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:31,916 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806389750] [2022-03-03 18:44:31,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:31,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:31,916 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:31,917 INFO L87 Difference]: Start difference. First operand 155 states and 350 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:37,277 INFO L93 Difference]: Finished difference Result 315 states and 637 transitions. [2022-03-03 18:44:37,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-03 18:44:37,277 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:44:37,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:37,278 INFO L225 Difference]: With dead ends: 315 [2022-03-03 18:44:37,278 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 18:44:37,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=490, Invalid=2702, Unknown=0, NotChecked=0, Total=3192 [2022-03-03 18:44:37,279 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 157 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:37,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 176 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 723 Invalid, 0 Unknown, 97 Unchecked, 1.6s Time] [2022-03-03 18:44:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 18:44:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 156. [2022-03-03 18:44:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.2774193548387096) internal successors, (353), 155 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:37,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 353 transitions. [2022-03-03 18:44:37,281 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 353 transitions. Word has length 19 [2022-03-03 18:44:37,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:37,282 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 353 transitions. [2022-03-03 18:44:37,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:37,282 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 353 transitions. [2022-03-03 18:44:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:37,282 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:37,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:37,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-03-03 18:44:37,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:37,484 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:37,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:37,484 INFO L85 PathProgramCache]: Analyzing trace with hash -2112156178, now seen corresponding path program 80 times [2022-03-03 18:44:37,484 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:37,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728469715] [2022-03-03 18:44:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:37,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:37,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:37,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728469715] [2022-03-03 18:44:37,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728469715] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:37,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917879465] [2022-03-03 18:44:37,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:44:37,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:37,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:37,962 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:44:37,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-03-03 18:44:37,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:44:37,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:37,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:37,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:38,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:40,388 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917879465] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:40,388 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:40,388 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:40,388 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176876623] [2022-03-03 18:44:40,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:40,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:40,388 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:40,388 INFO L87 Difference]: Start difference. First operand 156 states and 353 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:44,267 INFO L93 Difference]: Finished difference Result 266 states and 543 transitions. [2022-03-03 18:44:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:44:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:44:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:44,269 INFO L225 Difference]: With dead ends: 266 [2022-03-03 18:44:44,269 INFO L226 Difference]: Without dead ends: 259 [2022-03-03 18:44:44,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=320, Invalid=1842, Unknown=0, NotChecked=0, Total=2162 [2022-03-03 18:44:44,269 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 107 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:44,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 165 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 676 Invalid, 0 Unknown, 84 Unchecked, 1.4s Time] [2022-03-03 18:44:44,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-03-03 18:44:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 153. [2022-03-03 18:44:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:44:44,271 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:44:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:44,271 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:44:44,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:44:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:44,272 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:44,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:44,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2022-03-03 18:44:44,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:44,475 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:44,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:44,476 INFO L85 PathProgramCache]: Analyzing trace with hash 350983832, now seen corresponding path program 81 times [2022-03-03 18:44:44,476 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:44,476 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750296923] [2022-03-03 18:44:44,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:44,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:44,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:44,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750296923] [2022-03-03 18:44:44,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750296923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:44,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884394950] [2022-03-03 18:44:44,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:44:44,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:44,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:44,944 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:44:44,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-03-03 18:44:44,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:44:44,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:44,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:44,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:45,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:47,247 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:47,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884394950] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:47,247 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:47,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:47,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962986373] [2022-03-03 18:44:47,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:47,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:47,248 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:47,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:47,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:47,248 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:44:52,929 INFO L93 Difference]: Finished difference Result 307 states and 619 transitions. [2022-03-03 18:44:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:44:52,929 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:44:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:44:52,930 INFO L225 Difference]: With dead ends: 307 [2022-03-03 18:44:52,930 INFO L226 Difference]: Without dead ends: 300 [2022-03-03 18:44:52,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 826 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=461, Invalid=2619, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:44:52,931 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 151 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:44:52,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 216 Invalid, 993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 897 Invalid, 0 Unknown, 68 Unchecked, 1.9s Time] [2022-03-03 18:44:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2022-03-03 18:44:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 152. [2022-03-03 18:44:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2649006622516556) internal successors, (342), 151 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:44:52,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 342 transitions. [2022-03-03 18:44:52,934 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 342 transitions. Word has length 19 [2022-03-03 18:44:52,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:44:52,934 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 342 transitions. [2022-03-03 18:44:52,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:44:52,934 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 342 transitions. [2022-03-03 18:44:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:44:52,934 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:44:52,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:44:52,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-03-03 18:44:53,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:53,137 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:44:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:44:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1797812704, now seen corresponding path program 82 times [2022-03-03 18:44:53,137 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:44:53,137 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33673651] [2022-03-03 18:44:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:44:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:44:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:44:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:53,571 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:44:53,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33673651] [2022-03-03 18:44:53,571 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33673651] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:44:53,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118070774] [2022-03-03 18:44:53,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:44:53,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:44:53,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:44:53,573 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:44:53,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-03-03 18:44:53,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:44:53,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:44:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:44:53,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:44:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:54,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:44:56,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:44:56,169 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118070774] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:44:56,169 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:44:56,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:44:56,169 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367037000] [2022-03-03 18:44:56,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:44:56,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:44:56,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:44:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:44:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:44:56,170 INFO L87 Difference]: Start difference. First operand 152 states and 342 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:01,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:01,809 INFO L93 Difference]: Finished difference Result 333 states and 663 transitions. [2022-03-03 18:45:01,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 18:45:01,809 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:45:01,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:01,810 INFO L225 Difference]: With dead ends: 333 [2022-03-03 18:45:01,810 INFO L226 Difference]: Without dead ends: 326 [2022-03-03 18:45:01,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=485, Invalid=2821, Unknown=0, NotChecked=0, Total=3306 [2022-03-03 18:45:01,811 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 165 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:01,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 200 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 838 Invalid, 0 Unknown, 71 Unchecked, 1.8s Time] [2022-03-03 18:45:01,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-03-03 18:45:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 153. [2022-03-03 18:45:01,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:01,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:45:01,814 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:45:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:01,814 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:45:01,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:45:01,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:01,814 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:01,814 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:01,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-03-03 18:45:02,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:02,035 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1226357898, now seen corresponding path program 83 times [2022-03-03 18:45:02,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:02,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339971546] [2022-03-03 18:45:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:02,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:02,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:02,486 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:02,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339971546] [2022-03-03 18:45:02,486 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339971546] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:02,486 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363672735] [2022-03-03 18:45:02,486 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:45:02,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:02,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:02,488 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:02,507 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:45:02,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:45:02,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:02,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:02,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-03-03 18:45:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:03,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:07,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:07,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363672735] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:07,050 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:07,050 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:45:07,050 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132458840] [2022-03-03 18:45:07,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:07,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:45:07,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:45:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:45:07,051 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:11,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:11,283 INFO L93 Difference]: Finished difference Result 280 states and 560 transitions. [2022-03-03 18:45:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:45:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:45:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:11,288 INFO L225 Difference]: With dead ends: 280 [2022-03-03 18:45:11,288 INFO L226 Difference]: Without dead ends: 273 [2022-03-03 18:45:11,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=323, Invalid=1933, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:45:11,288 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 112 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:11,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 210 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 841 Invalid, 0 Unknown, 37 Unchecked, 1.8s Time] [2022-03-03 18:45:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-03-03 18:45:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 151. [2022-03-03 18:45:11,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:11,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:45:11,290 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:45:11,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:11,291 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:45:11,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:11,291 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:45:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:11,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:11,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:11,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2022-03-03 18:45:11,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2022-03-03 18:45:11,492 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:11,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:11,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1387602208, now seen corresponding path program 84 times [2022-03-03 18:45:11,492 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:11,492 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122751032] [2022-03-03 18:45:11,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:11,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:11,967 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:11,967 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122751032] [2022-03-03 18:45:11,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122751032] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:11,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763258904] [2022-03-03 18:45:11,968 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:45:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:11,969 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:11,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-03-03 18:45:11,990 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:45:11,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:45:11,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:11,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:12,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:14,718 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:14,718 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763258904] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:14,718 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:14,718 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:45:14,719 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455733823] [2022-03-03 18:45:14,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:14,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:45:14,719 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:45:14,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:45:14,719 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:45:21,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:21,611 INFO L93 Difference]: Finished difference Result 358 states and 694 transitions. [2022-03-03 18:45:21,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:45:21,611 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:45:21,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:21,612 INFO L225 Difference]: With dead ends: 358 [2022-03-03 18:45:21,612 INFO L226 Difference]: Without dead ends: 351 [2022-03-03 18:45:21,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=543, Invalid=2997, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:45:21,613 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 264 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:21,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 234 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 847 Invalid, 0 Unknown, 105 Unchecked, 1.9s Time] [2022-03-03 18:45:21,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-03-03 18:45:21,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 151. [2022-03-03 18:45:21,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:21,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:45:21,615 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:45:21,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:21,615 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:45:21,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:45:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:45:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:21,616 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:21,616 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:21,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-03-03 18:45:21,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-03-03 18:45:21,816 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1403063004, now seen corresponding path program 85 times [2022-03-03 18:45:21,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:21,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231765967] [2022-03-03 18:45:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:21,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:22,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:22,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231765967] [2022-03-03 18:45:22,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231765967] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:22,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520362787] [2022-03-03 18:45:22,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:45:22,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:22,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:22,253 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:22,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-03-03 18:45:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:22,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:22,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:23,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:24,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:24,797 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520362787] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:24,797 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:24,797 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:45:24,797 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552557256] [2022-03-03 18:45:24,797 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:24,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:45:24,797 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:24,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:45:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:45:24,798 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:32,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:32,430 INFO L93 Difference]: Finished difference Result 359 states and 701 transitions. [2022-03-03 18:45:32,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:45:32,430 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:45:32,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:32,431 INFO L225 Difference]: With dead ends: 359 [2022-03-03 18:45:32,431 INFO L226 Difference]: Without dead ends: 352 [2022-03-03 18:45:32,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1050 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=525, Invalid=3257, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:45:32,432 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 196 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:32,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 284 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1047 Invalid, 0 Unknown, 65 Unchecked, 2.5s Time] [2022-03-03 18:45:32,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2022-03-03 18:45:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 152. [2022-03-03 18:45:32,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.271523178807947) internal successors, (343), 151 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:32,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 343 transitions. [2022-03-03 18:45:32,434 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 343 transitions. Word has length 19 [2022-03-03 18:45:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:32,435 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 343 transitions. [2022-03-03 18:45:32,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:32,435 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 343 transitions. [2022-03-03 18:45:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:32,435 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:32,435 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:32,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2022-03-03 18:45:32,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:32,643 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:32,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:32,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1974517810, now seen corresponding path program 86 times [2022-03-03 18:45:32,644 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:32,644 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605608288] [2022-03-03 18:45:32,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:33,071 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:33,071 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:33,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605608288] [2022-03-03 18:45:33,071 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605608288] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:33,071 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243969390] [2022-03-03 18:45:33,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:45:33,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:33,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:33,073 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:33,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-03-03 18:45:33,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:45:33,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:45:33,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:33,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:34,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:34,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:35,735 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243969390] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:35,736 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:35,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:45:35,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214048181] [2022-03-03 18:45:35,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:35,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:45:35,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:35,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:45:35,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:45:35,736 INFO L87 Difference]: Start difference. First operand 152 states and 343 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:41,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:41,370 INFO L93 Difference]: Finished difference Result 315 states and 613 transitions. [2022-03-03 18:45:41,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:45:41,370 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:45:41,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:41,371 INFO L225 Difference]: With dead ends: 315 [2022-03-03 18:45:41,371 INFO L226 Difference]: Without dead ends: 308 [2022-03-03 18:45:41,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=416, Invalid=2554, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:45:41,372 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 178 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:41,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 230 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 755 Invalid, 0 Unknown, 88 Unchecked, 1.7s Time] [2022-03-03 18:45:41,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-03-03 18:45:41,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 151. [2022-03-03 18:45:41,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:41,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:45:41,374 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:45:41,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:41,374 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:45:41,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:41,374 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:45:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:41,374 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:41,375 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:41,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-03-03 18:45:41,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:41,581 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:41,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1436662232, now seen corresponding path program 87 times [2022-03-03 18:45:41,581 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:41,581 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208538447] [2022-03-03 18:45:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:42,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:42,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:42,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208538447] [2022-03-03 18:45:42,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208538447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:42,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654192611] [2022-03-03 18:45:42,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:45:42,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:42,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:42,005 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:42,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-03-03 18:45:42,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 18:45:42,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:45:42,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:42,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:43,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:44,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:44,601 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654192611] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:44,601 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:44,601 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:45:44,601 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433217042] [2022-03-03 18:45:44,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:44,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:45:44,601 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:44,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:45:44,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:45:44,602 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:50,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:50,350 INFO L93 Difference]: Finished difference Result 302 states and 591 transitions. [2022-03-03 18:45:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-03 18:45:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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 19 [2022-03-03 18:45:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:50,352 INFO L225 Difference]: With dead ends: 302 [2022-03-03 18:45:50,352 INFO L226 Difference]: Without dead ends: 295 [2022-03-03 18:45:50,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=407, Invalid=2563, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:45:50,352 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 183 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:50,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 259 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 953 Invalid, 0 Unknown, 94 Unchecked, 2.1s Time] [2022-03-03 18:45:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-03-03 18:45:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 151. [2022-03-03 18:45:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:45:50,355 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:45:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:50,355 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:45:50,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 26 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) [2022-03-03 18:45:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:45:50,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:50,355 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:50,355 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:50,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-03-03 18:45:50,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:50,556 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:50,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1604679460, now seen corresponding path program 88 times [2022-03-03 18:45:50,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:50,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533416110] [2022-03-03 18:45:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:50,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:50,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:45:50,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:50,960 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:45:50,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533416110] [2022-03-03 18:45:50,960 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533416110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:45:50,960 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429899579] [2022-03-03 18:45:50,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:45:50,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:50,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:45:50,961 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:45:50,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-03-03 18:45:50,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:45:50,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:45:50,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:45:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:45:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:51,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:45:53,390 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:45:53,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429899579] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:45:53,390 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:45:53,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:45:53,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938354697] [2022-03-03 18:45:53,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:45:53,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:45:53,391 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:45:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:45:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:45:53,391 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:45:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:45:59,669 INFO L93 Difference]: Finished difference Result 285 states and 560 transitions. [2022-03-03 18:45:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-03 18:45:59,669 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:45:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:45:59,670 INFO L225 Difference]: With dead ends: 285 [2022-03-03 18:45:59,670 INFO L226 Difference]: Without dead ends: 278 [2022-03-03 18:45:59,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=458, Invalid=2964, Unknown=0, NotChecked=0, Total=3422 [2022-03-03 18:45:59,670 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 171 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 984 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:45:59,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 246 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 984 Invalid, 0 Unknown, 97 Unchecked, 2.1s Time] [2022-03-03 18:45:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-03-03 18:45:59,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 151. [2022-03-03 18:45:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:45:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:45:59,673 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:45:59,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:45:59,673 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:45:59,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:45:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:45:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:45:59,673 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:45:59,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:45:59,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-03-03 18:45:59,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:45:59,887 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:45:59,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:45:59,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1987399848, now seen corresponding path program 89 times [2022-03-03 18:45:59,888 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:45:59,888 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816703] [2022-03-03 18:45:59,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:45:59,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:45:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:00,308 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:00,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816703] [2022-03-03 18:46:00,308 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816703] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:00,308 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556835533] [2022-03-03 18:46:00,308 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:46:00,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:00,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:00,309 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:00,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-03-03 18:46:00,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:46:00,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:46:00,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:00,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:01,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:02,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:02,942 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556835533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:02,942 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:02,942 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:02,942 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596986064] [2022-03-03 18:46:02,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:02,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:02,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:02,943 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:09,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:46:09,531 INFO L93 Difference]: Finished difference Result 294 states and 575 transitions. [2022-03-03 18:46:09,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 18:46:09,532 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:46:09,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:46:09,533 INFO L225 Difference]: With dead ends: 294 [2022-03-03 18:46:09,533 INFO L226 Difference]: Without dead ends: 287 [2022-03-03 18:46:09,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 941 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=477, Invalid=3063, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:46:09,533 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 199 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:46:09,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 226 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 802 Invalid, 0 Unknown, 101 Unchecked, 1.9s Time] [2022-03-03 18:46:09,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-03 18:46:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 153. [2022-03-03 18:46:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:46:09,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:46:09,536 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:46:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:46:09,536 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:46:09,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:46:09,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:46:09,536 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:46:09,536 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:46:09,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-03-03 18:46:09,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:09,747 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:46:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:46:09,748 INFO L85 PathProgramCache]: Analyzing trace with hash 91893980, now seen corresponding path program 90 times [2022-03-03 18:46:09,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:46:09,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420525774] [2022-03-03 18:46:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:46:09,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:46:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:10,172 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:10,172 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:10,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420525774] [2022-03-03 18:46:10,172 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420525774] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:10,172 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987090470] [2022-03-03 18:46:10,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:46:10,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:10,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:10,174 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:10,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-03-03 18:46:10,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:46:10,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:46:10,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:11,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:12,704 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:12,704 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987090470] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:12,704 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:12,704 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:12,705 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339133663] [2022-03-03 18:46:12,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:12,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:12,705 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:12,705 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:46:21,003 INFO L93 Difference]: Finished difference Result 336 states and 656 transitions. [2022-03-03 18:46:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-03-03 18:46:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:46:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:46:21,004 INFO L225 Difference]: With dead ends: 336 [2022-03-03 18:46:21,004 INFO L226 Difference]: Without dead ends: 329 [2022-03-03 18:46:21,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1314 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=634, Invalid=3922, Unknown=0, NotChecked=0, Total=4556 [2022-03-03 18:46:21,005 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 249 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:46:21,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 233 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1011 Invalid, 0 Unknown, 113 Unchecked, 2.3s Time] [2022-03-03 18:46:21,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2022-03-03 18:46:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 153. [2022-03-03 18:46:21,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:46:21,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:46:21,007 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:46:21,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:46:21,007 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:46:21,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:21,008 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:46:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:46:21,008 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:46:21,008 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:46:21,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-03-03 18:46:21,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2022-03-03 18:46:21,211 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:46:21,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:46:21,212 INFO L85 PathProgramCache]: Analyzing trace with hash 107354776, now seen corresponding path program 91 times [2022-03-03 18:46:21,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:46:21,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527608146] [2022-03-03 18:46:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:46:21,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:46:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:21,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:21,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527608146] [2022-03-03 18:46:21,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527608146] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:21,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521995674] [2022-03-03 18:46:21,721 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:46:21,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:21,722 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:21,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-03-03 18:46:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:21,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:21,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:22,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:22,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:24,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521995674] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:24,280 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:24,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:24,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409831230] [2022-03-03 18:46:24,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:24,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:24,280 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:24,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:24,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:24,281 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:46:31,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:46:31,410 INFO L93 Difference]: Finished difference Result 329 states and 648 transitions. [2022-03-03 18:46:31,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 18:46:31,411 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:46:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:46:31,412 INFO L225 Difference]: With dead ends: 329 [2022-03-03 18:46:31,412 INFO L226 Difference]: Without dead ends: 322 [2022-03-03 18:46:31,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1067 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=549, Invalid=3233, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:46:31,413 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 210 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:46:31,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 214 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 941 Invalid, 0 Unknown, 112 Unchecked, 2.2s Time] [2022-03-03 18:46:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-03 18:46:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 153. [2022-03-03 18:46:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:46:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:46:31,415 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:46:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:46:31,415 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:46:31,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:46:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:46:31,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:46:31,416 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:46:31,416 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:46:31,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Forceful destruction successful, exit code 0 [2022-03-03 18:46:31,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:31,626 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:46:31,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:46:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1120047308, now seen corresponding path program 92 times [2022-03-03 18:46:31,626 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:46:31,626 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363152682] [2022-03-03 18:46:31,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:46:31,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:46:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:32,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:32,099 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:32,099 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363152682] [2022-03-03 18:46:32,100 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363152682] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:32,100 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962056755] [2022-03-03 18:46:32,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:46:32,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:32,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:32,108 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:32,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-03-03 18:46:32,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:46:32,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:46:32,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:32,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:33,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:34,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:34,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962056755] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:34,513 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:34,513 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:34,513 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512677177] [2022-03-03 18:46:34,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:34,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:34,513 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:34,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:34,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:34,513 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:46:40,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:46:40,055 INFO L93 Difference]: Finished difference Result 296 states and 595 transitions. [2022-03-03 18:46:40,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-03 18:46:40,055 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:46:40,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:46:40,056 INFO L225 Difference]: With dead ends: 296 [2022-03-03 18:46:40,056 INFO L226 Difference]: Without dead ends: 289 [2022-03-03 18:46:40,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=454, Invalid=2516, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:46:40,056 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 166 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:46:40,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 199 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 823 Invalid, 0 Unknown, 99 Unchecked, 1.9s Time] [2022-03-03 18:46:40,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-03-03 18:46:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 153. [2022-03-03 18:46:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:46:40,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:46:40,059 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:46:40,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:46:40,059 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:46:40,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:46:40,059 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:46:40,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:46:40,059 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:46:40,059 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:46:40,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-03-03 18:46:40,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:40,260 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:46:40,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:46:40,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1044210024, now seen corresponding path program 93 times [2022-03-03 18:46:40,260 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:46:40,260 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512203748] [2022-03-03 18:46:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:46:40,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:46:40,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:40,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:40,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:40,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512203748] [2022-03-03 18:46:40,691 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512203748] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:40,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133585936] [2022-03-03 18:46:40,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:46:40,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:40,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:40,692 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:40,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-03-03 18:46:40,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:46:40,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:46:40,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:40,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:41,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:43,152 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133585936] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:43,153 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:43,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:43,153 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776208476] [2022-03-03 18:46:43,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:43,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:43,153 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:43,153 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:50,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:46:50,059 INFO L93 Difference]: Finished difference Result 329 states and 651 transitions. [2022-03-03 18:46:50,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:46:50,059 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:46:50,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:46:50,060 INFO L225 Difference]: With dead ends: 329 [2022-03-03 18:46:50,060 INFO L226 Difference]: Without dead ends: 322 [2022-03-03 18:46:50,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=586, Invalid=3446, Unknown=0, NotChecked=0, Total=4032 [2022-03-03 18:46:50,060 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 237 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:46:50,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 194 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 764 Invalid, 0 Unknown, 99 Unchecked, 1.8s Time] [2022-03-03 18:46:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-03-03 18:46:50,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 154. [2022-03-03 18:46:50,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2679738562091503) internal successors, (347), 153 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:46:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 347 transitions. [2022-03-03 18:46:50,063 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 347 transitions. Word has length 19 [2022-03-03 18:46:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:46:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 347 transitions. [2022-03-03 18:46:50,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:46:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 347 transitions. [2022-03-03 18:46:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:46:50,063 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:46:50,063 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:46:50,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2022-03-03 18:46:50,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2022-03-03 18:46:50,264 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:46:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:46:50,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1028749228, now seen corresponding path program 94 times [2022-03-03 18:46:50,264 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:46:50,264 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212966085] [2022-03-03 18:46:50,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:46:50,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:46:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:46:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:50,691 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:46:50,691 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212966085] [2022-03-03 18:46:50,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212966085] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:46:50,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063617935] [2022-03-03 18:46:50,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:46:50,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:46:50,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:46:50,693 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:46:50,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-03-03 18:46:50,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:46:50,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:46:50,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:46:50,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:46:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:51,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:46:53,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:46:53,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063617935] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:46:53,151 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:46:53,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:46:53,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010356078] [2022-03-03 18:46:53,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:46:53,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:46:53,151 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:46:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:46:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:46:53,152 INFO L87 Difference]: Start difference. First operand 154 states and 347 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:00,314 INFO L93 Difference]: Finished difference Result 323 states and 646 transitions. [2022-03-03 18:47:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:47:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:00,315 INFO L225 Difference]: With dead ends: 323 [2022-03-03 18:47:00,315 INFO L226 Difference]: Without dead ends: 316 [2022-03-03 18:47:00,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1200 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=598, Invalid=3562, Unknown=0, NotChecked=0, Total=4160 [2022-03-03 18:47:00,315 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 217 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:00,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [217 Valid, 219 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 954 Invalid, 0 Unknown, 110 Unchecked, 2.3s Time] [2022-03-03 18:47:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-03-03 18:47:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 155. [2022-03-03 18:47:00,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 2.272727272727273) internal successors, (350), 154 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 350 transitions. [2022-03-03 18:47:00,318 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 350 transitions. Word has length 19 [2022-03-03 18:47:00,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:00,318 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 350 transitions. [2022-03-03 18:47:00,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:00,318 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 350 transitions. [2022-03-03 18:47:00,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:00,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:00,319 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:00,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-03-03 18:47:00,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:00,531 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:00,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:00,532 INFO L85 PathProgramCache]: Analyzing trace with hash -457294422, now seen corresponding path program 95 times [2022-03-03 18:47:00,532 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:00,532 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229054390] [2022-03-03 18:47:00,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:00,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:00,934 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:00,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229054390] [2022-03-03 18:47:00,934 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229054390] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:00,934 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406935898] [2022-03-03 18:47:00,934 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:47:00,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:00,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:00,940 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:00,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-03-03 18:47:00,958 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:47:00,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:47:00,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:00,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:02,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:03,741 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406935898] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:03,741 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:03,741 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:03,742 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295646819] [2022-03-03 18:47:03,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:03,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:03,742 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:47:03,742 INFO L87 Difference]: Start difference. First operand 155 states and 350 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:08,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:08,757 INFO L93 Difference]: Finished difference Result 274 states and 552 transitions. [2022-03-03 18:47:08,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:47:08,757 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:08,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:08,758 INFO L225 Difference]: With dead ends: 274 [2022-03-03 18:47:08,758 INFO L226 Difference]: Without dead ends: 267 [2022-03-03 18:47:08,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=401, Invalid=2569, Unknown=0, NotChecked=0, Total=2970 [2022-03-03 18:47:08,758 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 133 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:08,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 173 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 711 Invalid, 0 Unknown, 78 Unchecked, 1.6s Time] [2022-03-03 18:47:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-03-03 18:47:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 153. [2022-03-03 18:47:08,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:47:08,761 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:47:08,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:08,761 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:47:08,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:08,761 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:47:08,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:08,762 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:08,762 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:08,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:08,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:08,971 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:08,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash 2005845588, now seen corresponding path program 96 times [2022-03-03 18:47:08,972 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:08,972 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414962226] [2022-03-03 18:47:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:09,423 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:09,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414962226] [2022-03-03 18:47:09,423 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414962226] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:09,423 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747024124] [2022-03-03 18:47:09,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:47:09,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:09,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:09,424 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:09,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-03-03 18:47:09,443 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 18:47:09,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:47:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:10,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:11,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:11,762 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747024124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:11,762 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:11,762 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:11,762 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635686168] [2022-03-03 18:47:11,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:11,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:11,763 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:11,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:11,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:47:11,763 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:17,550 INFO L93 Difference]: Finished difference Result 291 states and 597 transitions. [2022-03-03 18:47:17,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:47:17,550 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:17,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:17,551 INFO L225 Difference]: With dead ends: 291 [2022-03-03 18:47:17,551 INFO L226 Difference]: Without dead ends: 284 [2022-03-03 18:47:17,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 777 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=437, Invalid=2425, Unknown=0, NotChecked=0, Total=2862 [2022-03-03 18:47:17,551 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 147 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:17,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 221 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 990 Invalid, 0 Unknown, 82 Unchecked, 2.3s Time] [2022-03-03 18:47:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-03 18:47:17,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 152. [2022-03-03 18:47:17,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2649006622516556) internal successors, (342), 151 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 342 transitions. [2022-03-03 18:47:17,553 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 342 transitions. Word has length 19 [2022-03-03 18:47:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:17,554 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 342 transitions. [2022-03-03 18:47:17,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 342 transitions. [2022-03-03 18:47:17,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:17,554 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:17,554 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:17,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:17,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2022-03-03 18:47:17,768 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:17,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:17,768 INFO L85 PathProgramCache]: Analyzing trace with hash -142950948, now seen corresponding path program 97 times [2022-03-03 18:47:17,768 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:17,768 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472012851] [2022-03-03 18:47:17,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:17,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:18,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:18,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472012851] [2022-03-03 18:47:18,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472012851] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:18,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023146793] [2022-03-03 18:47:18,177 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:47:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:18,178 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:18,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-03-03 18:47:18,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:18,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:18,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:19,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:20,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023146793] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:20,705 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:20,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:20,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490478348] [2022-03-03 18:47:20,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:20,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:20,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=625, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:47:20,706 INFO L87 Difference]: Start difference. First operand 152 states and 342 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:27,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:27,466 INFO L93 Difference]: Finished difference Result 320 states and 647 transitions. [2022-03-03 18:47:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-03 18:47:27,466 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:27,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:27,467 INFO L225 Difference]: With dead ends: 320 [2022-03-03 18:47:27,467 INFO L226 Difference]: Without dead ends: 313 [2022-03-03 18:47:27,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1027 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=541, Invalid=3119, Unknown=0, NotChecked=0, Total=3660 [2022-03-03 18:47:27,467 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 182 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:27,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 200 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 947 Invalid, 0 Unknown, 45 Unchecked, 2.2s Time] [2022-03-03 18:47:27,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-03-03 18:47:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 153. [2022-03-03 18:47:27,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:27,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:47:27,470 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:47:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:27,470 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:47:27,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:47:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:27,470 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:27,470 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:27,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:27,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2022-03-03 18:47:27,671 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:27,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:27,671 INFO L85 PathProgramCache]: Analyzing trace with hash 428503858, now seen corresponding path program 98 times [2022-03-03 18:47:27,671 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:27,671 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040782335] [2022-03-03 18:47:27,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:27,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:28,051 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:28,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040782335] [2022-03-03 18:47:28,051 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040782335] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:28,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795308054] [2022-03-03 18:47:28,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:47:28,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:28,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:28,053 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:28,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-03-03 18:47:28,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:47:28,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:47:28,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:28,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:29,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:29,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:30,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795308054] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:30,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:30,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:30,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791196367] [2022-03-03 18:47:30,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:30,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:47:30,724 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:35,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:35,008 INFO L93 Difference]: Finished difference Result 267 states and 544 transitions. [2022-03-03 18:47:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:47:35,008 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:35,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:35,009 INFO L225 Difference]: With dead ends: 267 [2022-03-03 18:47:35,009 INFO L226 Difference]: Without dead ends: 260 [2022-03-03 18:47:35,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=338, Invalid=2112, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:47:35,009 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 144 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:35,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 156 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 666 Invalid, 0 Unknown, 80 Unchecked, 1.5s Time] [2022-03-03 18:47:35,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-03 18:47:35,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 151. [2022-03-03 18:47:35,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:35,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:47:35,011 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:47:35,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:35,011 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:47:35,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:35,012 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:47:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:35,012 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:35,012 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:35,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:35,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2022-03-03 18:47:35,212 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1252503332, now seen corresponding path program 99 times [2022-03-03 18:47:35,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:35,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766839086] [2022-03-03 18:47:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:35,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:35,638 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:35,638 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:35,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766839086] [2022-03-03 18:47:35,638 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766839086] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:35,638 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289137900] [2022-03-03 18:47:35,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:47:35,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:35,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:35,640 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:35,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:47:35,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:47:35,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:35,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:35,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-03-03 18:47:36,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:36,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:38,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:38,161 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289137900] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:38,162 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:38,162 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:38,162 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019007748] [2022-03-03 18:47:38,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:38,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:38,162 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:38,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:38,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=633, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:47:38,162 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:47:45,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:45,571 INFO L93 Difference]: Finished difference Result 338 states and 676 transitions. [2022-03-03 18:47:45,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:47:45,571 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:47:45,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:45,572 INFO L225 Difference]: With dead ends: 338 [2022-03-03 18:47:45,572 INFO L226 Difference]: Without dead ends: 331 [2022-03-03 18:47:45,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 970 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=551, Invalid=2989, Unknown=0, NotChecked=0, Total=3540 [2022-03-03 18:47:45,572 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 228 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:45,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 278 Invalid, 1222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1087 Invalid, 0 Unknown, 106 Unchecked, 2.4s Time] [2022-03-03 18:47:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-03-03 18:47:45,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 152. [2022-03-03 18:47:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2781456953642385) internal successors, (344), 151 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 344 transitions. [2022-03-03 18:47:45,574 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 344 transitions. Word has length 19 [2022-03-03 18:47:45,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:45,575 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 344 transitions. [2022-03-03 18:47:45,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:47:45,575 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 344 transitions. [2022-03-03 18:47:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:45,575 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:45,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:45,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:45,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:45,775 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1237042536, now seen corresponding path program 100 times [2022-03-03 18:47:45,776 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:45,776 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258837437] [2022-03-03 18:47:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:47:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:46,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:47:46,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258837437] [2022-03-03 18:47:46,205 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258837437] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:47:46,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162634922] [2022-03-03 18:47:46,205 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:47:46,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:47:46,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:47:46,207 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:47:46,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-03-03 18:47:46,225 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:47:46,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:47:46,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:47:46,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:47:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:47,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:47:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:47:51,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162634922] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:47:51,189 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:47:51,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:47:51,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793191191] [2022-03-03 18:47:51,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:47:51,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:47:51,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:47:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:47:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=633, Unknown=1, NotChecked=0, Total=756 [2022-03-03 18:47:51,190 INFO L87 Difference]: Start difference. First operand 152 states and 344 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:59,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:47:59,714 INFO L93 Difference]: Finished difference Result 348 states and 693 transitions. [2022-03-03 18:47:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:47:59,714 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:47:59,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:47:59,715 INFO L225 Difference]: With dead ends: 348 [2022-03-03 18:47:59,715 INFO L226 Difference]: Without dead ends: 341 [2022-03-03 18:47:59,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1129 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=582, Invalid=3449, Unknown=1, NotChecked=0, Total=4032 [2022-03-03 18:47:59,716 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 205 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:47:59,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 356 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1346 Invalid, 0 Unknown, 113 Unchecked, 3.1s Time] [2022-03-03 18:47:59,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-03-03 18:47:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 153. [2022-03-03 18:47:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2828947368421053) internal successors, (347), 152 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:47:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 347 transitions. [2022-03-03 18:47:59,718 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 347 transitions. Word has length 19 [2022-03-03 18:47:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:47:59,718 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 347 transitions. [2022-03-03 18:47:59,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:47:59,718 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 347 transitions. [2022-03-03 18:47:59,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:47:59,719 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:47:59,719 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:47:59,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-03-03 18:47:59,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2022-03-03 18:47:59,919 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:47:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:47:59,920 INFO L85 PathProgramCache]: Analyzing trace with hash -665587730, now seen corresponding path program 101 times [2022-03-03 18:47:59,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:47:59,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263395025] [2022-03-03 18:47:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:47:59,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:47:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:00,322 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:00,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263395025] [2022-03-03 18:48:00,322 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263395025] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:00,322 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507042903] [2022-03-03 18:48:00,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:48:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:00,323 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:00,368 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:48:00,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:00,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:48:00,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:00,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-03-03 18:48:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:01,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:03,016 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507042903] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:03,016 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:03,016 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:03,016 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666493823] [2022-03-03 18:48:03,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:03,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:03,017 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:03,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:03,017 INFO L87 Difference]: Start difference. First operand 153 states and 347 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:48:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:08,906 INFO L93 Difference]: Finished difference Result 304 states and 605 transitions. [2022-03-03 18:48:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-03 18:48:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:48:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:08,907 INFO L225 Difference]: With dead ends: 304 [2022-03-03 18:48:08,907 INFO L226 Difference]: Without dead ends: 297 [2022-03-03 18:48:08,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=443, Invalid=2637, Unknown=0, NotChecked=0, Total=3080 [2022-03-03 18:48:08,907 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 183 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:08,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 217 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 818 Invalid, 0 Unknown, 48 Unchecked, 1.8s Time] [2022-03-03 18:48:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-03-03 18:48:08,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 152. [2022-03-03 18:48:08,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.2781456953642385) internal successors, (344), 151 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:08,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 344 transitions. [2022-03-03 18:48:08,910 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 344 transitions. Word has length 19 [2022-03-03 18:48:08,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:08,910 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 344 transitions. [2022-03-03 18:48:08,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:48:08,910 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 344 transitions. [2022-03-03 18:48:08,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:08,910 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:08,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:08,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2022-03-03 18:48:09,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2022-03-03 18:48:09,119 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1203443308, now seen corresponding path program 102 times [2022-03-03 18:48:09,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:09,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869633156] [2022-03-03 18:48:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:09,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:09,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869633156] [2022-03-03 18:48:09,494 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869633156] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:09,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793759869] [2022-03-03 18:48:09,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:48:09,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:09,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:09,495 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:09,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-03-03 18:48:09,520 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:48:09,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:09,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:48:09,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:10,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:12,103 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:12,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793759869] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:12,103 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:12,103 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:12,103 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124675394] [2022-03-03 18:48:12,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:12,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:12,104 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:12,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:12,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:12,104 INFO L87 Difference]: Start difference. First operand 152 states and 344 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:48:17,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:17,651 INFO L93 Difference]: Finished difference Result 291 states and 583 transitions. [2022-03-03 18:48:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-03 18:48:17,651 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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 19 [2022-03-03 18:48:17,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:17,652 INFO L225 Difference]: With dead ends: 291 [2022-03-03 18:48:17,652 INFO L226 Difference]: Without dead ends: 284 [2022-03-03 18:48:17,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=396, Invalid=2360, Unknown=0, NotChecked=0, Total=2756 [2022-03-03 18:48:17,652 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 162 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:17,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 229 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 883 Invalid, 0 Unknown, 47 Unchecked, 2.0s Time] [2022-03-03 18:48:17,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-03-03 18:48:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 150. [2022-03-03 18:48:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.261744966442953) internal successors, (337), 149 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:17,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 337 transitions. [2022-03-03 18:48:17,654 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 337 transitions. Word has length 19 [2022-03-03 18:48:17,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:17,655 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 337 transitions. [2022-03-03 18:48:17,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 27 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) [2022-03-03 18:48:17,655 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 337 transitions. [2022-03-03 18:48:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:17,655 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:17,655 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:17,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-03-03 18:48:17,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:17,856 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:17,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:17,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1848961976, now seen corresponding path program 103 times [2022-03-03 18:48:17,856 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:17,856 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563837811] [2022-03-03 18:48:17,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:17,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:18,244 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:18,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563837811] [2022-03-03 18:48:18,244 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563837811] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:18,244 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363307138] [2022-03-03 18:48:18,244 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:48:18,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:18,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:18,245 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:18,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-03-03 18:48:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:18,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:48:18,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:19,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:20,672 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363307138] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:20,672 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:20,672 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:20,672 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023303265] [2022-03-03 18:48:20,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:20,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:20,672 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:20,673 INFO L87 Difference]: Start difference. First operand 150 states and 337 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:24,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:24,788 INFO L93 Difference]: Finished difference Result 221 states and 458 transitions. [2022-03-03 18:48:24,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-03 18:48:24,788 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:48:24,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:24,789 INFO L225 Difference]: With dead ends: 221 [2022-03-03 18:48:24,789 INFO L226 Difference]: Without dead ends: 214 [2022-03-03 18:48:24,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=252, Invalid=1470, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:48:24,789 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 96 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:24,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 161 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 627 Invalid, 0 Unknown, 64 Unchecked, 1.5s Time] [2022-03-03 18:48:24,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-03-03 18:48:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 151. [2022-03-03 18:48:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.2666666666666666) internal successors, (340), 150 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 340 transitions. [2022-03-03 18:48:24,791 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 340 transitions. Word has length 19 [2022-03-03 18:48:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:24,791 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 340 transitions. [2022-03-03 18:48:24,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 340 transitions. [2022-03-03 18:48:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:24,792 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:24,792 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:24,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-03-03 18:48:24,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:24,992 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 230331852, now seen corresponding path program 104 times [2022-03-03 18:48:24,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:24,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835480604] [2022-03-03 18:48:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:25,424 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:25,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835480604] [2022-03-03 18:48:25,425 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835480604] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:25,425 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558782544] [2022-03-03 18:48:25,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:48:25,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:25,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:25,426 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:25,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-03-03 18:48:25,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:48:25,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:25,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:48:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:26,415 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:26,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:29,118 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:29,118 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558782544] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:29,118 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:29,118 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:29,118 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222753514] [2022-03-03 18:48:29,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:29,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:29,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:29,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:29,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=630, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:29,119 INFO L87 Difference]: Start difference. First operand 151 states and 340 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:34,524 INFO L93 Difference]: Finished difference Result 258 states and 532 transitions. [2022-03-03 18:48:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-03 18:48:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:48:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:34,525 INFO L225 Difference]: With dead ends: 258 [2022-03-03 18:48:34,525 INFO L226 Difference]: Without dead ends: 251 [2022-03-03 18:48:34,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=353, Invalid=1903, Unknown=0, NotChecked=0, Total=2256 [2022-03-03 18:48:34,526 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 126 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:34,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 203 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 874 Invalid, 0 Unknown, 86 Unchecked, 1.9s Time] [2022-03-03 18:48:34,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-03-03 18:48:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 150. [2022-03-03 18:48:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.261744966442953) internal successors, (337), 149 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:34,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 337 transitions. [2022-03-03 18:48:34,528 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 337 transitions. Word has length 19 [2022-03-03 18:48:34,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:34,528 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 337 transitions. [2022-03-03 18:48:34,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:34,528 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 337 transitions. [2022-03-03 18:48:34,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:34,528 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:34,528 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:34,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-03-03 18:48:34,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable109 [2022-03-03 18:48:34,729 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:34,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1918464684, now seen corresponding path program 105 times [2022-03-03 18:48:34,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:34,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543675807] [2022-03-03 18:48:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:35,150 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:35,150 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:35,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543675807] [2022-03-03 18:48:35,150 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543675807] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:35,150 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446887769] [2022-03-03 18:48:35,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:48:35,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:35,152 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:35,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-03-03 18:48:35,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-03 18:48:35,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:35,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-03 18:48:35,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:36,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:38,561 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:38,562 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446887769] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:38,562 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:38,562 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:38,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678510523] [2022-03-03 18:48:38,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:38,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:38,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:38,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:38,562 INFO L87 Difference]: Start difference. First operand 150 states and 337 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:44,128 INFO L93 Difference]: Finished difference Result 261 states and 539 transitions. [2022-03-03 18:48:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-03 18:48:44,128 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:48:44,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:44,129 INFO L225 Difference]: With dead ends: 261 [2022-03-03 18:48:44,129 INFO L226 Difference]: Without dead ends: 254 [2022-03-03 18:48:44,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=396, Invalid=1956, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:48:44,129 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 145 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:44,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 189 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 769 Invalid, 0 Unknown, 80 Unchecked, 1.7s Time] [2022-03-03 18:48:44,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-03-03 18:48:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 147. [2022-03-03 18:48:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.2534246575342465) internal successors, (329), 146 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 329 transitions. [2022-03-03 18:48:44,131 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 329 transitions. Word has length 19 [2022-03-03 18:48:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:44,131 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 329 transitions. [2022-03-03 18:48:44,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 329 transitions. [2022-03-03 18:48:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:44,132 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:44,132 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:44,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2022-03-03 18:48:44,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:44,343 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:44,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:44,344 INFO L85 PathProgramCache]: Analyzing trace with hash 527545288, now seen corresponding path program 106 times [2022-03-03 18:48:44,344 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:44,344 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117061534] [2022-03-03 18:48:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:44,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:44,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:44,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:44,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117061534] [2022-03-03 18:48:44,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117061534] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:44,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56621179] [2022-03-03 18:48:44,773 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:48:44,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:44,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:44,775 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:44,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-03-03 18:48:44,793 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:48:44,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:44,794 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:48:44,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:45,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:45,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:46,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56621179] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:46,712 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:46,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:46,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122127845] [2022-03-03 18:48:46,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:46,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:46,712 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:46,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:46,712 INFO L87 Difference]: Start difference. First operand 147 states and 329 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:49,648 INFO L93 Difference]: Finished difference Result 231 states and 481 transitions. [2022-03-03 18:48:49,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-03 18:48:49,649 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:48:49,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:49,649 INFO L225 Difference]: With dead ends: 231 [2022-03-03 18:48:49,649 INFO L226 Difference]: Without dead ends: 217 [2022-03-03 18:48:49,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=314, Invalid=1408, Unknown=0, NotChecked=0, Total=1722 [2022-03-03 18:48:49,650 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 97 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:49,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 182 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-03 18:48:49,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-03-03 18:48:49,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 148. [2022-03-03 18:48:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.258503401360544) internal successors, (332), 147 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:49,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 332 transitions. [2022-03-03 18:48:49,652 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 332 transitions. Word has length 19 [2022-03-03 18:48:49,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:49,652 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 332 transitions. [2022-03-03 18:48:49,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 332 transitions. [2022-03-03 18:48:49,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:49,652 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:49,652 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:49,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-03-03 18:48:49,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2022-03-03 18:48:49,859 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:49,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:49,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1688128180, now seen corresponding path program 107 times [2022-03-03 18:48:49,860 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:49,860 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875090960] [2022-03-03 18:48:49,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:49,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:50,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:50,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875090960] [2022-03-03 18:48:50,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875090960] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:50,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024468925] [2022-03-03 18:48:50,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:48:50,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:50,303 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:50,322 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:48:50,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:50,323 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:48:50,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:50,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-03-03 18:48:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:51,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:52,248 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024468925] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:52,248 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:52,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2022-03-03 18:48:52,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849277169] [2022-03-03 18:48:52,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:52,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-03 18:48:52,249 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-03 18:48:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=595, Unknown=0, NotChecked=0, Total=756 [2022-03-03 18:48:52,249 INFO L87 Difference]: Start difference. First operand 148 states and 332 transitions. Second operand has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:56,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:48:56,868 INFO L93 Difference]: Finished difference Result 304 states and 627 transitions. [2022-03-03 18:48:56,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-03 18:48:56,868 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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 19 [2022-03-03 18:48:56,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:48:56,869 INFO L225 Difference]: With dead ends: 304 [2022-03-03 18:48:56,869 INFO L226 Difference]: Without dead ends: 290 [2022-03-03 18:48:56,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=525, Invalid=2127, Unknown=0, NotChecked=0, Total=2652 [2022-03-03 18:48:56,869 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 196 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:48:56,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 172 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-03-03 18:48:56,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-03-03 18:48:56,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 147. [2022-03-03 18:48:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 2.2534246575342465) internal successors, (329), 146 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:48:56,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 329 transitions. [2022-03-03 18:48:56,871 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 329 transitions. Word has length 19 [2022-03-03 18:48:56,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:48:56,871 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 329 transitions. [2022-03-03 18:48:56,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8214285714285714) internal successors, (51), 27 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) [2022-03-03 18:48:56,872 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 329 transitions. [2022-03-03 18:48:56,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:48:56,872 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:48:56,872 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:48:56,888 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-03-03 18:48:57,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2022-03-03 18:48:57,072 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:48:57,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:48:57,073 INFO L85 PathProgramCache]: Analyzing trace with hash 278701068, now seen corresponding path program 108 times [2022-03-03 18:48:57,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:48:57,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381894757] [2022-03-03 18:48:57,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:48:57,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:48:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:48:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:57,495 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:48:57,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381894757] [2022-03-03 18:48:57,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381894757] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:48:57,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982004559] [2022-03-03 18:48:57,495 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:48:57,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:48:57,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:48:57,496 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:48:57,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-03-03 18:48:57,515 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 18:48:57,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:48:57,516 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:48:57,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:48:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:58,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:48:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:48:59,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982004559] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:48:59,503 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:48:59,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:48:59,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938213308] [2022-03-03 18:48:59,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:48:59,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:48:59,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:48:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:48:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:48:59,504 INFO L87 Difference]: Start difference. First operand 147 states and 329 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:03,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:03,305 INFO L93 Difference]: Finished difference Result 272 states and 549 transitions. [2022-03-03 18:49:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-03 18:49:03,305 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:49:03,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:03,306 INFO L225 Difference]: With dead ends: 272 [2022-03-03 18:49:03,306 INFO L226 Difference]: Without dead ends: 258 [2022-03-03 18:49:03,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=376, Invalid=1976, Unknown=0, NotChecked=0, Total=2352 [2022-03-03 18:49:03,306 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 137 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:03,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 155 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 18:49:03,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-03-03 18:49:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 154. [2022-03-03 18:49:03,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:49:03,309 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:49:03,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:03,309 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:49:03,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:49:03,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:49:03,309 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:03,309 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:03,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2022-03-03 18:49:03,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:03,519 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:03,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:03,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1936972400, now seen corresponding path program 109 times [2022-03-03 18:49:03,520 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:03,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300129732] [2022-03-03 18:49:03,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:03,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:03,966 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:03,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300129732] [2022-03-03 18:49:03,966 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300129732] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:03,966 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104850484] [2022-03-03 18:49:03,966 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:49:03,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:03,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:03,967 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:03,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-03-03 18:49:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:03,987 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:49:03,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:04,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:49:05,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:05,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104850484] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:49:05,790 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:49:05,791 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:49:05,791 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558429728] [2022-03-03 18:49:05,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:49:05,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:49:05,791 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:49:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:49:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:49:05,792 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:11,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:11,818 INFO L93 Difference]: Finished difference Result 358 states and 720 transitions. [2022-03-03 18:49:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-03-03 18:49:11,818 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:49:11,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:11,819 INFO L225 Difference]: With dead ends: 358 [2022-03-03 18:49:11,819 INFO L226 Difference]: Without dead ends: 344 [2022-03-03 18:49:11,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=664, Invalid=3242, Unknown=0, NotChecked=0, Total=3906 [2022-03-03 18:49:11,819 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 201 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:11,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 206 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-03-03 18:49:11,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-03-03 18:49:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 153. [2022-03-03 18:49:11,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 2.2697368421052633) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-03-03 18:49:11,822 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 19 [2022-03-03 18:49:11,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:11,822 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-03-03 18:49:11,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:11,822 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-03-03 18:49:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:49:11,822 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:11,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:11,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2022-03-03 18:49:12,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2022-03-03 18:49:12,030 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:12,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1972294992, now seen corresponding path program 110 times [2022-03-03 18:49:12,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:12,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643328648] [2022-03-03 18:49:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:12,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:12,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:12,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643328648] [2022-03-03 18:49:12,447 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643328648] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:12,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003017606] [2022-03-03 18:49:12,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:49:12,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:12,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:12,448 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:12,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-03-03 18:49:12,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:49:12,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:49:12,474 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:49:12,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:13,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:13,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:49:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:14,397 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003017606] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:49:14,397 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:49:14,397 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:49:14,397 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050365040] [2022-03-03 18:49:14,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:49:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:49:14,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:49:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:49:14,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:49:14,398 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:18,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:18,443 INFO L93 Difference]: Finished difference Result 267 states and 553 transitions. [2022-03-03 18:49:18,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-03 18:49:18,443 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:49:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:18,444 INFO L225 Difference]: With dead ends: 267 [2022-03-03 18:49:18,444 INFO L226 Difference]: Without dead ends: 253 [2022-03-03 18:49:18,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=404, Invalid=2046, Unknown=0, NotChecked=0, Total=2450 [2022-03-03 18:49:18,444 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 165 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:18,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 159 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-03 18:49:18,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-03-03 18:49:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 158. [2022-03-03 18:49:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 2.286624203821656) internal successors, (359), 157 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:18,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 359 transitions. [2022-03-03 18:49:18,446 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 359 transitions. Word has length 19 [2022-03-03 18:49:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 359 transitions. [2022-03-03 18:49:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 359 transitions. [2022-03-03 18:49:18,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-03 18:49:18,447 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:18,447 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:18,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2022-03-03 18:49:18,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2022-03-03 18:49:18,655 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:18,655 INFO L85 PathProgramCache]: Analyzing trace with hash -243378476, now seen corresponding path program 111 times [2022-03-03 18:49:18,656 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:18,656 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140568908] [2022-03-03 18:49:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:18,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:18,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:19,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:19,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140568908] [2022-03-03 18:49:19,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140568908] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:19,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426958121] [2022-03-03 18:49:19,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:49:19,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:19,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:19,082 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:19,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-03-03 18:49:19,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:49:19,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:49:19,102 WARN L261 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-03 18:49:19,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:20,028 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:20,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:49:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:21,006 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426958121] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:49:21,006 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:49:21,006 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2022-03-03 18:49:21,006 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384760294] [2022-03-03 18:49:21,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:49:21,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-03 18:49:21,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:49:21,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-03 18:49:21,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2022-03-03 18:49:21,007 INFO L87 Difference]: Start difference. First operand 158 states and 359 transitions. Second operand has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:28,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:28,669 INFO L93 Difference]: Finished difference Result 358 states and 736 transitions. [2022-03-03 18:49:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:49:28,669 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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 19 [2022-03-03 18:49:28,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:28,670 INFO L225 Difference]: With dead ends: 358 [2022-03-03 18:49:28,670 INFO L226 Difference]: Without dead ends: 344 [2022-03-03 18:49:28,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1204 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=770, Invalid=3520, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 18:49:28,671 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 183 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:28,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 240 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1049 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 18:49:28,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-03-03 18:49:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 154. [2022-03-03 18:49:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 2.2745098039215685) internal successors, (348), 153 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 348 transitions. [2022-03-03 18:49:28,673 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 348 transitions. Word has length 19 [2022-03-03 18:49:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:28,674 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 348 transitions. [2022-03-03 18:49:28,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7407407407407407) internal successors, (47), 26 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) [2022-03-03 18:49:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 348 transitions. [2022-03-03 18:49:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:49:28,674 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:28,674 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:28,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-03-03 18:49:28,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:28,875 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:28,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash 514029778, now seen corresponding path program 112 times [2022-03-03 18:49:28,875 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:28,875 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934598250] [2022-03-03 18:49:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:28,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:29,349 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:29,349 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:29,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934598250] [2022-03-03 18:49:29,349 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934598250] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:29,349 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063514971] [2022-03-03 18:49:29,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:49:29,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:29,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:29,351 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:29,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-03-03 18:49:29,372 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:49:29,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:49:29,373 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:49:29,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:30,546 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:30,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:49:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:31,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063514971] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:49:31,723 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:49:31,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:49:31,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946991138] [2022-03-03 18:49:31,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:49:31,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:49:31,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:49:31,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:49:31,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:49:31,724 INFO L87 Difference]: Start difference. First operand 154 states and 348 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:49:41,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:41,382 INFO L93 Difference]: Finished difference Result 301 states and 616 transitions. [2022-03-03 18:49:41,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-03-03 18:49:41,382 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:49:41,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:41,383 INFO L225 Difference]: With dead ends: 301 [2022-03-03 18:49:41,383 INFO L226 Difference]: Without dead ends: 287 [2022-03-03 18:49:41,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=760, Invalid=3796, Unknown=0, NotChecked=0, Total=4556 [2022-03-03 18:49:41,383 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 185 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:41,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 171 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-03-03 18:49:41,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-03-03 18:49:41,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 163. [2022-03-03 18:49:41,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 2.2901234567901234) internal successors, (371), 162 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:41,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 371 transitions. [2022-03-03 18:49:41,386 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 371 transitions. Word has length 21 [2022-03-03 18:49:41,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:41,386 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 371 transitions. [2022-03-03 18:49:41,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:49:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 371 transitions. [2022-03-03 18:49:41,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:49:41,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:41,386 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:41,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2022-03-03 18:49:41,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:41,587 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1701643690, now seen corresponding path program 113 times [2022-03-03 18:49:41,587 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:41,587 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006767880] [2022-03-03 18:49:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:42,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:42,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006767880] [2022-03-03 18:49:42,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006767880] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:42,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240995751] [2022-03-03 18:49:42,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:49:42,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:42,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:42,161 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:42,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-03-03 18:49:42,181 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:49:42,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:49:42,182 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:49:42,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:43,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:49:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:44,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240995751] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:49:44,376 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:49:44,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:49:44,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908817421] [2022-03-03 18:49:44,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:49:44,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:49:44,376 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:49:44,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:49:44,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:49:44,377 INFO L87 Difference]: Start difference. First operand 163 states and 371 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:49:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:49:57,288 INFO L93 Difference]: Finished difference Result 369 states and 742 transitions. [2022-03-03 18:49:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 18:49:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:49:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:49:57,289 INFO L225 Difference]: With dead ends: 369 [2022-03-03 18:49:57,289 INFO L226 Difference]: Without dead ends: 355 [2022-03-03 18:49:57,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1665 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=1015, Invalid=4837, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 18:49:57,290 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 235 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-03-03 18:49:57,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 271 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-03-03 18:49:57,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-03 18:49:57,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 160. [2022-03-03 18:49:57,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.2830188679245285) internal successors, (363), 159 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:49:57,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 363 transitions. [2022-03-03 18:49:57,292 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 363 transitions. Word has length 21 [2022-03-03 18:49:57,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:49:57,292 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 363 transitions. [2022-03-03 18:49:57,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:49:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 363 transitions. [2022-03-03 18:49:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:49:57,292 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:49:57,293 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:49:57,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2022-03-03 18:49:57,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2022-03-03 18:49:57,493 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:49:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:49:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1686182894, now seen corresponding path program 114 times [2022-03-03 18:49:57,493 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:49:57,493 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117249554] [2022-03-03 18:49:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:49:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:49:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:49:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:58,027 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:49:58,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117249554] [2022-03-03 18:49:58,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117249554] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:49:58,027 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978012817] [2022-03-03 18:49:58,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:49:58,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:49:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:49:58,029 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:49:58,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-03-03 18:49:58,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 18:49:58,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:49:58,052 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:49:58,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:49:59,184 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:49:59,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:50:00,301 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:00,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978012817] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:50:00,301 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:50:00,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:50:00,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147562182] [2022-03-03 18:50:00,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:50:00,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:50:00,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:50:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:50:00,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:50:00,302 INFO L87 Difference]: Start difference. First operand 160 states and 363 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:10,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:50:10,906 INFO L93 Difference]: Finished difference Result 394 states and 800 transitions. [2022-03-03 18:50:10,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:50:10,906 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:50:10,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:50:10,907 INFO L225 Difference]: With dead ends: 394 [2022-03-03 18:50:10,907 INFO L226 Difference]: Without dead ends: 380 [2022-03-03 18:50:10,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=838, Invalid=3992, Unknown=0, NotChecked=0, Total=4830 [2022-03-03 18:50:10,908 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 199 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:50:10,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 275 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:50:10,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-03 18:50:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 165. [2022-03-03 18:50:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.292682926829268) internal successors, (376), 164 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 376 transitions. [2022-03-03 18:50:10,910 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 376 transitions. Word has length 21 [2022-03-03 18:50:10,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:50:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 376 transitions. [2022-03-03 18:50:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 376 transitions. [2022-03-03 18:50:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:50:10,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:50:10,911 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:50:10,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Forceful destruction successful, exit code 0 [2022-03-03 18:50:11,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2022-03-03 18:50:11,119 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:50:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:50:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 444527070, now seen corresponding path program 115 times [2022-03-03 18:50:11,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:50:11,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399178713] [2022-03-03 18:50:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:50:11,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:50:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:50:11,626 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:11,626 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:50:11,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399178713] [2022-03-03 18:50:11,626 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399178713] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:50:11,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896296370] [2022-03-03 18:50:11,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:50:11,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:11,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:50:11,627 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:50:11,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-03-03 18:50:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:50:11,651 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:50:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:50:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:12,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:50:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:14,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896296370] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:50:14,007 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:50:14,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:50:14,007 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079030192] [2022-03-03 18:50:14,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:50:14,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:50:14,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:50:14,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:50:14,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:50:14,008 INFO L87 Difference]: Start difference. First operand 165 states and 376 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:50:25,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:50:25,497 INFO L93 Difference]: Finished difference Result 394 states and 794 transitions. [2022-03-03 18:50:25,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:50:25,498 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:50:25,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:50:25,499 INFO L225 Difference]: With dead ends: 394 [2022-03-03 18:50:25,499 INFO L226 Difference]: Without dead ends: 380 [2022-03-03 18:50:25,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1431 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=907, Invalid=4205, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 18:50:25,499 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 211 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:50:25,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 244 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:50:25,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-03-03 18:50:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 168. [2022-03-03 18:50:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 2.2994011976047903) internal successors, (384), 167 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:25,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 384 transitions. [2022-03-03 18:50:25,502 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 384 transitions. Word has length 21 [2022-03-03 18:50:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:50:25,502 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 384 transitions. [2022-03-03 18:50:25,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:50:25,502 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 384 transitions. [2022-03-03 18:50:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:50:25,502 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:50:25,502 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:50:25,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-03-03 18:50:25,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:25,703 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:50:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:50:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash 459987866, now seen corresponding path program 116 times [2022-03-03 18:50:25,703 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:50:25,703 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253870801] [2022-03-03 18:50:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:50:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:50:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:50:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:26,222 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:50:26,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253870801] [2022-03-03 18:50:26,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253870801] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:50:26,222 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078152077] [2022-03-03 18:50:26,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:50:26,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:26,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:50:26,223 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:50:26,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-03-03 18:50:26,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:50:26,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:50:26,246 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:50:26,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:50:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:27,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:50:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:28,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078152077] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:50:28,474 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:50:28,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:50:28,474 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507226179] [2022-03-03 18:50:28,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:50:28,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:50:28,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:50:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:50:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:50:28,475 INFO L87 Difference]: Start difference. First operand 168 states and 384 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:42,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:50:42,578 INFO L93 Difference]: Finished difference Result 445 states and 902 transitions. [2022-03-03 18:50:42,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-03-03 18:50:42,579 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:50:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:50:42,579 INFO L225 Difference]: With dead ends: 445 [2022-03-03 18:50:42,580 INFO L226 Difference]: Without dead ends: 431 [2022-03-03 18:50:42,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2094 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1178, Invalid=5794, Unknown=0, NotChecked=0, Total=6972 [2022-03-03 18:50:42,580 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 213 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:50:42,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 250 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:50:42,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-03 18:50:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 170. [2022-03-03 18:50:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 2.301775147928994) internal successors, (389), 169 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:42,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 389 transitions. [2022-03-03 18:50:42,583 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 389 transitions. Word has length 21 [2022-03-03 18:50:42,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:50:42,583 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 389 transitions. [2022-03-03 18:50:42,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:42,583 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 389 transitions. [2022-03-03 18:50:42,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:50:42,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:50:42,583 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:50:42,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2022-03-03 18:50:42,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:42,791 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:50:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:50:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash -353905758, now seen corresponding path program 117 times [2022-03-03 18:50:42,792 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:50:42,792 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017013594] [2022-03-03 18:50:42,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:50:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:50:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:50:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:43,292 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:50:43,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017013594] [2022-03-03 18:50:43,292 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017013594] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:50:43,292 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208049741] [2022-03-03 18:50:43,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:50:43,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:43,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:50:43,293 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:50:43,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-03-03 18:50:43,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:50:43,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:50:43,322 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:50:43,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:50:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:44,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:50:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:50:50,843 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208049741] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:50:50,843 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:50:50,843 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:50:50,843 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524334909] [2022-03-03 18:50:50,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:50:50,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:50:50,844 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:50:50,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:50:50,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=750, Unknown=1, NotChecked=0, Total=870 [2022-03-03 18:50:50,844 INFO L87 Difference]: Start difference. First operand 170 states and 389 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:50:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:50:59,520 INFO L93 Difference]: Finished difference Result 315 states and 641 transitions. [2022-03-03 18:50:59,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-03-03 18:50:59,521 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:50:59,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:50:59,521 INFO L225 Difference]: With dead ends: 315 [2022-03-03 18:50:59,521 INFO L226 Difference]: Without dead ends: 272 [2022-03-03 18:50:59,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=698, Invalid=4271, Unknown=1, NotChecked=0, Total=4970 [2022-03-03 18:50:59,522 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 232 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:50:59,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 221 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 927 Invalid, 0 Unknown, 42 Unchecked, 2.1s Time] [2022-03-03 18:50:59,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-03-03 18:50:59,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 183. [2022-03-03 18:50:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.2857142857142856) internal successors, (416), 182 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:50:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 416 transitions. [2022-03-03 18:50:59,524 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 416 transitions. Word has length 21 [2022-03-03 18:50:59,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:50:59,524 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 416 transitions. [2022-03-03 18:50:59,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:50:59,525 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 416 transitions. [2022-03-03 18:50:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:50:59,525 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:50:59,525 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:50:59,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-03-03 18:50:59,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:50:59,725 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:50:59,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:50:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1399828058, now seen corresponding path program 118 times [2022-03-03 18:50:59,726 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:50:59,726 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388059227] [2022-03-03 18:50:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:50:59,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:50:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:00,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:51:00,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388059227] [2022-03-03 18:51:00,232 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388059227] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:51:00,232 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955353765] [2022-03-03 18:51:00,232 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:51:00,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:51:00,233 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:51:00,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-03-03 18:51:00,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:51:00,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:51:00,256 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:51:00,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:51:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:01,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:51:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:02,745 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955353765] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:51:02,745 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:51:02,745 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:51:02,745 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557717784] [2022-03-03 18:51:02,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:51:02,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:51:02,745 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:51:02,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:51:02,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:51:02,746 INFO L87 Difference]: Start difference. First operand 183 states and 416 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:51:09,995 INFO L93 Difference]: Finished difference Result 290 states and 607 transitions. [2022-03-03 18:51:09,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-03 18:51:09,996 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:51:09,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:51:09,996 INFO L225 Difference]: With dead ends: 290 [2022-03-03 18:51:09,996 INFO L226 Difference]: Without dead ends: 276 [2022-03-03 18:51:09,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 903 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=663, Invalid=3119, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:51:09,997 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 112 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 1093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:51:09,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 197 Invalid, 1093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-03 18:51:09,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-03-03 18:51:09,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 191. [2022-03-03 18:51:09,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.305263157894737) internal successors, (438), 190 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:09,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 438 transitions. [2022-03-03 18:51:09,999 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 438 transitions. Word has length 21 [2022-03-03 18:51:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:51:09,999 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 438 transitions. [2022-03-03 18:51:09,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 438 transitions. [2022-03-03 18:51:09,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:51:09,999 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:51:10,000 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:51:10,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-03-03 18:51:10,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-03-03 18:51:10,205 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:51:10,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:51:10,205 INFO L85 PathProgramCache]: Analyzing trace with hash -815845410, now seen corresponding path program 119 times [2022-03-03 18:51:10,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:51:10,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256923268] [2022-03-03 18:51:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:51:10,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:51:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:10,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:10,773 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:51:10,773 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256923268] [2022-03-03 18:51:10,773 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256923268] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:51:10,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513932685] [2022-03-03 18:51:10,774 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:51:10,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:10,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:51:10,775 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:51:10,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-03-03 18:51:10,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:51:10,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:51:10,796 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:51:10,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:51:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:12,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:51:13,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:13,095 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513932685] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:51:13,095 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:51:13,095 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:51:13,096 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591467444] [2022-03-03 18:51:13,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:51:13,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:51:13,096 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:51:13,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:51:13,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:51:13,096 INFO L87 Difference]: Start difference. First operand 191 states and 438 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:51:23,996 INFO L93 Difference]: Finished difference Result 396 states and 818 transitions. [2022-03-03 18:51:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:51:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:51:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:51:23,997 INFO L225 Difference]: With dead ends: 396 [2022-03-03 18:51:23,997 INFO L226 Difference]: Without dead ends: 382 [2022-03-03 18:51:23,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1511 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1047, Invalid=4503, Unknown=0, NotChecked=0, Total=5550 [2022-03-03 18:51:23,998 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 200 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:51:23,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 230 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:51:23,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-03-03 18:51:24,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 190. [2022-03-03 18:51:24,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.3015873015873014) internal successors, (435), 189 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:24,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 435 transitions. [2022-03-03 18:51:24,001 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 435 transitions. Word has length 21 [2022-03-03 18:51:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:51:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 435 transitions. [2022-03-03 18:51:24,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 435 transitions. [2022-03-03 18:51:24,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:51:24,001 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:51:24,001 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:51:24,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2022-03-03 18:51:24,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2022-03-03 18:51:24,202 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:51:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:51:24,202 INFO L85 PathProgramCache]: Analyzing trace with hash -800384614, now seen corresponding path program 120 times [2022-03-03 18:51:24,202 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:51:24,202 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664853447] [2022-03-03 18:51:24,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:51:24,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:51:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:24,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:51:24,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664853447] [2022-03-03 18:51:24,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664853447] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:51:24,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884257557] [2022-03-03 18:51:24,730 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:51:24,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:51:24,731 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:51:24,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-03-03 18:51:24,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-03 18:51:24,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:51:24,755 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:51:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:51:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:25,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:51:27,113 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:27,114 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884257557] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:51:27,114 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:51:27,114 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:51:27,114 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081760290] [2022-03-03 18:51:27,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:51:27,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:51:27,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:51:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:51:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:51:27,114 INFO L87 Difference]: Start difference. First operand 190 states and 435 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:51:35,423 INFO L93 Difference]: Finished difference Result 367 states and 764 transitions. [2022-03-03 18:51:35,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-03 18:51:35,423 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:51:35,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:51:35,424 INFO L225 Difference]: With dead ends: 367 [2022-03-03 18:51:35,424 INFO L226 Difference]: Without dead ends: 353 [2022-03-03 18:51:35,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=665, Invalid=3117, Unknown=0, NotChecked=0, Total=3782 [2022-03-03 18:51:35,424 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 158 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:51:35,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [158 Valid, 255 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:51:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-03 18:51:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 179. [2022-03-03 18:51:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.297752808988764) internal successors, (409), 178 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:35,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 409 transitions. [2022-03-03 18:51:35,427 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 409 transitions. Word has length 21 [2022-03-03 18:51:35,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:51:35,427 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 409 transitions. [2022-03-03 18:51:35,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:35,427 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 409 transitions. [2022-03-03 18:51:35,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:51:35,428 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:51:35,428 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:51:35,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-03-03 18:51:35,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-03-03 18:51:35,628 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:51:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:51:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1330325350, now seen corresponding path program 121 times [2022-03-03 18:51:35,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:51:35,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910239110] [2022-03-03 18:51:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:51:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:51:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:36,158 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:51:36,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910239110] [2022-03-03 18:51:36,158 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910239110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:51:36,158 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967331524] [2022-03-03 18:51:36,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:51:36,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:51:36,160 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:51:36,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-03-03 18:51:36,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:36,191 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:51:36,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:51:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:37,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:51:38,508 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:38,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967331524] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:51:38,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:51:38,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:51:38,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121591584] [2022-03-03 18:51:38,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:51:38,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:51:38,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:51:38,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:51:38,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:51:38,509 INFO L87 Difference]: Start difference. First operand 179 states and 409 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:47,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:51:47,436 INFO L93 Difference]: Finished difference Result 376 states and 776 transitions. [2022-03-03 18:51:47,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-03-03 18:51:47,436 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:51:47,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:51:47,437 INFO L225 Difference]: With dead ends: 376 [2022-03-03 18:51:47,437 INFO L226 Difference]: Without dead ends: 362 [2022-03-03 18:51:47,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=859, Invalid=3833, Unknown=0, NotChecked=0, Total=4692 [2022-03-03 18:51:47,437 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 200 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 1277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:51:47,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 231 Invalid, 1277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:51:47,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-03-03 18:51:47,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 182. [2022-03-03 18:51:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.303867403314917) internal successors, (417), 181 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:51:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 417 transitions. [2022-03-03 18:51:47,440 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 417 transitions. Word has length 21 [2022-03-03 18:51:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:51:47,440 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 417 transitions. [2022-03-03 18:51:47,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:51:47,440 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 417 transitions. [2022-03-03 18:51:47,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:51:47,440 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:51:47,440 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:51:47,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2022-03-03 18:51:47,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:47,641 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:51:47,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:51:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1345786146, now seen corresponding path program 122 times [2022-03-03 18:51:47,641 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:51:47,642 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023054668] [2022-03-03 18:51:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:51:47,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:51:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:51:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:48,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:51:48,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023054668] [2022-03-03 18:51:48,132 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023054668] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:51:48,132 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967305083] [2022-03-03 18:51:48,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:51:48,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:51:48,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:51:48,137 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:51:48,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-03-03 18:51:48,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:51:48,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:51:48,170 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:51:48,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:51:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:49,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:51:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:51:50,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967305083] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:51:50,459 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:51:50,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:51:50,460 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148300073] [2022-03-03 18:51:50,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:51:50,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:51:50,460 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:51:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:51:50,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:51:50,460 INFO L87 Difference]: Start difference. First operand 182 states and 417 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:52:00,444 INFO L93 Difference]: Finished difference Result 398 states and 818 transitions. [2022-03-03 18:52:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-03-03 18:52:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:52:00,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:52:00,445 INFO L225 Difference]: With dead ends: 398 [2022-03-03 18:52:00,445 INFO L226 Difference]: Without dead ends: 384 [2022-03-03 18:52:00,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=887, Invalid=4225, Unknown=0, NotChecked=0, Total=5112 [2022-03-03 18:52:00,446 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 156 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:52:00,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 256 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-03-03 18:52:00,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-03-03 18:52:00,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 179. [2022-03-03 18:52:00,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.297752808988764) internal successors, (409), 178 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:00,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 409 transitions. [2022-03-03 18:52:00,449 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 409 transitions. Word has length 21 [2022-03-03 18:52:00,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:52:00,449 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 409 transitions. [2022-03-03 18:52:00,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:00,449 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 409 transitions. [2022-03-03 18:52:00,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:52:00,449 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:52:00,450 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:52:00,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2022-03-03 18:52:00,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:00,665 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:52:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:52:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 236233762, now seen corresponding path program 123 times [2022-03-03 18:52:00,666 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:52:00,666 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358812383] [2022-03-03 18:52:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:52:00,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:52:00,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:52:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:01,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:52:01,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358812383] [2022-03-03 18:52:01,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358812383] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:52:01,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006595916] [2022-03-03 18:52:01,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:52:01,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:01,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:52:01,190 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:52:01,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-03-03 18:52:01,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 18:52:01,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:52:01,212 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:52:01,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:52:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:02,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:52:03,364 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:03,365 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006595916] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:52:03,365 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:52:03,365 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:52:03,365 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946501458] [2022-03-03 18:52:03,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:52:03,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:52:03,366 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:52:03,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:52:03,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:52:03,366 INFO L87 Difference]: Start difference. First operand 179 states and 409 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:52:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:52:14,215 INFO L93 Difference]: Finished difference Result 432 states and 878 transitions. [2022-03-03 18:52:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-03 18:52:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:52:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:52:14,217 INFO L225 Difference]: With dead ends: 432 [2022-03-03 18:52:14,217 INFO L226 Difference]: Without dead ends: 418 [2022-03-03 18:52:14,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1843 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=998, Invalid=5322, Unknown=0, NotChecked=0, Total=6320 [2022-03-03 18:52:14,218 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 276 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:52:14,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 255 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-03-03 18:52:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-03-03 18:52:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 185. [2022-03-03 18:52:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.342391304347826) internal successors, (431), 184 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:14,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 431 transitions. [2022-03-03 18:52:14,229 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 431 transitions. Word has length 21 [2022-03-03 18:52:14,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:52:14,230 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 431 transitions. [2022-03-03 18:52:14,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:52:14,230 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 431 transitions. [2022-03-03 18:52:14,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:52:14,230 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:52:14,230 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:52:14,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Forceful destruction successful, exit code 0 [2022-03-03 18:52:14,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2022-03-03 18:52:14,446 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:52:14,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:52:14,447 INFO L85 PathProgramCache]: Analyzing trace with hash 251694558, now seen corresponding path program 124 times [2022-03-03 18:52:14,447 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:52:14,447 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247599939] [2022-03-03 18:52:14,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:52:14,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:52:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:52:14,961 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:14,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:52:14,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247599939] [2022-03-03 18:52:14,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247599939] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:52:14,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761777919] [2022-03-03 18:52:14,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:52:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:52:14,972 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:52:14,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-03-03 18:52:14,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:52:15,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:52:15,000 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:52:15,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:52:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:16,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:52:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:17,154 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761777919] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:52:17,154 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:52:17,154 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:52:17,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115950366] [2022-03-03 18:52:17,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:52:17,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:52:17,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:52:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:52:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:52:17,155 INFO L87 Difference]: Start difference. First operand 185 states and 431 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:32,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:52:32,196 INFO L93 Difference]: Finished difference Result 478 states and 964 transitions. [2022-03-03 18:52:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-03-03 18:52:32,196 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:52:32,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:52:32,197 INFO L225 Difference]: With dead ends: 478 [2022-03-03 18:52:32,197 INFO L226 Difference]: Without dead ends: 464 [2022-03-03 18:52:32,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2595 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1389, Invalid=6983, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 18:52:32,198 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 211 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:52:32,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 354 Invalid, 1875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-03-03 18:52:32,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-03-03 18:52:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 183. [2022-03-03 18:52:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.32967032967033) internal successors, (424), 182 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 424 transitions. [2022-03-03 18:52:32,201 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 424 transitions. Word has length 21 [2022-03-03 18:52:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:52:32,202 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 424 transitions. [2022-03-03 18:52:32,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 424 transitions. [2022-03-03 18:52:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:52:32,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:52:32,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:52:32,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2022-03-03 18:52:32,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-03-03 18:52:32,411 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:52:32,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:52:32,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2034402398, now seen corresponding path program 125 times [2022-03-03 18:52:32,412 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:52:32,412 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36210510] [2022-03-03 18:52:32,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:52:32,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:52:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:52:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:32,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:52:32,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36210510] [2022-03-03 18:52:32,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36210510] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:52:32,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070084870] [2022-03-03 18:52:32,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:52:32,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:32,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:52:32,963 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:52:32,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-03-03 18:52:32,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-03 18:52:32,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:52:32,986 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:52:32,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:52:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:34,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:52:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:37,066 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070084870] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:52:37,066 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:52:37,066 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:52:37,066 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660750873] [2022-03-03 18:52:37,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:52:37,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:52:37,066 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:52:37,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:52:37,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:52:37,067 INFO L87 Difference]: Start difference. First operand 183 states and 424 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:52:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:52:48,342 INFO L93 Difference]: Finished difference Result 388 states and 787 transitions. [2022-03-03 18:52:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-03-03 18:52:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:52:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:52:48,343 INFO L225 Difference]: With dead ends: 388 [2022-03-03 18:52:48,343 INFO L226 Difference]: Without dead ends: 353 [2022-03-03 18:52:48,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1611 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=880, Invalid=4972, Unknown=0, NotChecked=0, Total=5852 [2022-03-03 18:52:48,343 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 246 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:52:48,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 243 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1065 Invalid, 0 Unknown, 102 Unchecked, 2.4s Time] [2022-03-03 18:52:48,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-03-03 18:52:48,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 190. [2022-03-03 18:52:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.375661375661376) internal successors, (449), 189 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:52:48,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 449 transitions. [2022-03-03 18:52:48,346 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 449 transitions. Word has length 21 [2022-03-03 18:52:48,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:52:48,346 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 449 transitions. [2022-03-03 18:52:48,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:52:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 449 transitions. [2022-03-03 18:52:48,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:52:48,347 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:52:48,347 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:52:48,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2022-03-03 18:52:48,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:48,555 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:52:48,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:52:48,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1877844510, now seen corresponding path program 126 times [2022-03-03 18:52:48,556 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:52:48,556 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891825563] [2022-03-03 18:52:48,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:52:48,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:52:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:52:49,063 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:49,063 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:52:49,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891825563] [2022-03-03 18:52:49,063 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891825563] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:52:49,063 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301717284] [2022-03-03 18:52:49,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:52:49,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:52:49,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:52:49,064 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:52:49,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-03-03 18:52:49,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:52:49,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:52:49,089 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:52:49,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:52:50,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:50,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:52:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:52:53,823 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301717284] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:52:53,823 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:52:53,823 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:52:53,823 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501581332] [2022-03-03 18:52:53,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:52:53,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:52:53,823 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:52:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:52:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:52:53,824 INFO L87 Difference]: Start difference. First operand 190 states and 449 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:53:05,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:05,301 INFO L93 Difference]: Finished difference Result 361 states and 751 transitions. [2022-03-03 18:53:05,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-03-03 18:53:05,302 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:53:05,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:05,302 INFO L225 Difference]: With dead ends: 361 [2022-03-03 18:53:05,302 INFO L226 Difference]: Without dead ends: 347 [2022-03-03 18:53:05,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1478 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=836, Invalid=4420, Unknown=0, NotChecked=0, Total=5256 [2022-03-03 18:53:05,303 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 218 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 1324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:05,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 245 Invalid, 1324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1172 Invalid, 0 Unknown, 88 Unchecked, 2.8s Time] [2022-03-03 18:53:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-03-03 18:53:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 191. [2022-03-03 18:53:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.3789473684210525) internal successors, (452), 190 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 452 transitions. [2022-03-03 18:53:05,306 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 452 transitions. Word has length 21 [2022-03-03 18:53:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:05,306 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 452 transitions. [2022-03-03 18:53:05,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:53:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 452 transitions. [2022-03-03 18:53:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:53:05,306 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:05,306 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:05,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:05,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:05,507 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:53:05,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash -337828958, now seen corresponding path program 127 times [2022-03-03 18:53:05,507 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:05,507 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052328756] [2022-03-03 18:53:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:05,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:06,049 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:06,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:06,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052328756] [2022-03-03 18:53:06,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052328756] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:06,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221271831] [2022-03-03 18:53:06,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:53:06,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:06,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:06,051 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:06,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-03-03 18:53:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:06,074 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:53:06,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:07,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:09,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221271831] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:09,897 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:09,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:53:09,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121979962] [2022-03-03 18:53:09,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:09,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:53:09,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:09,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:53:09,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:53:09,898 INFO L87 Difference]: Start difference. First operand 191 states and 452 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:53:24,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:24,820 INFO L93 Difference]: Finished difference Result 445 states and 899 transitions. [2022-03-03 18:53:24,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-03 18:53:24,820 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:53:24,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:24,821 INFO L225 Difference]: With dead ends: 445 [2022-03-03 18:53:24,821 INFO L226 Difference]: Without dead ends: 431 [2022-03-03 18:53:24,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2554 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1326, Invalid=7046, Unknown=0, NotChecked=0, Total=8372 [2022-03-03 18:53:24,822 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 301 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:24,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 280 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1231 Invalid, 0 Unknown, 64 Unchecked, 2.5s Time] [2022-03-03 18:53:24,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-03-03 18:53:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 191. [2022-03-03 18:53:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.3842105263157896) internal successors, (453), 190 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 453 transitions. [2022-03-03 18:53:24,826 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 453 transitions. Word has length 21 [2022-03-03 18:53:24,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:24,826 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 453 transitions. [2022-03-03 18:53:24,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:53:24,826 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 453 transitions. [2022-03-03 18:53:24,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:53:24,826 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:24,826 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:24,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-03-03 18:53:25,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2022-03-03 18:53:25,027 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:53:25,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:25,027 INFO L85 PathProgramCache]: Analyzing trace with hash -322368162, now seen corresponding path program 128 times [2022-03-03 18:53:25,027 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:25,027 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252057062] [2022-03-03 18:53:25,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:25,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:25,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:25,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252057062] [2022-03-03 18:53:25,518 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252057062] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:25,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833938649] [2022-03-03 18:53:25,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:53:25,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:25,520 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:25,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-03-03 18:53:25,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:53:25,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:25,543 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:53:25,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:27,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:30,851 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833938649] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:30,851 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:30,851 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:53:30,851 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713995885] [2022-03-03 18:53:30,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:30,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:53:30,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:30,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:53:30,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=739, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:53:30,852 INFO L87 Difference]: Start difference. First operand 191 states and 453 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:46,539 INFO L93 Difference]: Finished difference Result 418 states and 878 transitions. [2022-03-03 18:53:46,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-03 18:53:46,539 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:53:46,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:46,540 INFO L225 Difference]: With dead ends: 418 [2022-03-03 18:53:46,540 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 18:53:46,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1978 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=1101, Invalid=5541, Unknown=0, NotChecked=0, Total=6642 [2022-03-03 18:53:46,541 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 256 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:46,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 204 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 890 Invalid, 0 Unknown, 184 Unchecked, 2.1s Time] [2022-03-03 18:53:46,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 18:53:46,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 194. [2022-03-03 18:53:46,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.38860103626943) internal successors, (461), 193 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 461 transitions. [2022-03-03 18:53:46,551 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 461 transitions. Word has length 21 [2022-03-03 18:53:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:46,551 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 461 transitions. [2022-03-03 18:53:46,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:46,551 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 461 transitions. [2022-03-03 18:53:46,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:53:46,551 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:46,551 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:46,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:46,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-03-03 18:53:46,764 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:53:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:46,764 INFO L85 PathProgramCache]: Analyzing trace with hash 285293786, now seen corresponding path program 129 times [2022-03-03 18:53:46,764 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:46,764 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145511763] [2022-03-03 18:53:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:46,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:46,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:47,199 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:47,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145511763] [2022-03-03 18:53:47,199 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145511763] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:47,199 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359037018] [2022-03-03 18:53:47,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:53:47,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:47,200 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:47,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-03-03 18:53:47,228 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-03-03 18:53:47,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:47,230 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:53:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:53:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:48,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:53:49,606 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:49,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359037018] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:53:49,606 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:53:49,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:53:49,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733745137] [2022-03-03 18:53:49,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:53:49,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:53:49,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:53:49,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:53:49,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:53:49,607 INFO L87 Difference]: Start difference. First operand 194 states and 461 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:57,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:53:57,971 INFO L93 Difference]: Finished difference Result 369 states and 771 transitions. [2022-03-03 18:53:57,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-03 18:53:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:53:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:53:57,972 INFO L225 Difference]: With dead ends: 369 [2022-03-03 18:53:57,972 INFO L226 Difference]: Without dead ends: 355 [2022-03-03 18:53:57,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1101 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=636, Invalid=3654, Unknown=0, NotChecked=0, Total=4290 [2022-03-03 18:53:57,973 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 173 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:53:57,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 233 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-03 18:53:57,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-03-03 18:53:57,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 197. [2022-03-03 18:53:57,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.392857142857143) internal successors, (469), 196 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:57,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 469 transitions. [2022-03-03 18:53:57,976 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 469 transitions. Word has length 21 [2022-03-03 18:53:57,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:53:57,976 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 469 transitions. [2022-03-03 18:53:57,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:53:57,976 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 469 transitions. [2022-03-03 18:53:57,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:53:57,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:53:57,976 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:53:58,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Forceful destruction successful, exit code 0 [2022-03-03 18:53:58,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-03-03 18:53:58,183 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:53:58,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:53:58,183 INFO L85 PathProgramCache]: Analyzing trace with hash -638020898, now seen corresponding path program 130 times [2022-03-03 18:53:58,184 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:53:58,184 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761266693] [2022-03-03 18:53:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:53:58,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:53:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:53:58,787 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:53:58,788 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:53:58,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761266693] [2022-03-03 18:53:58,788 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761266693] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:53:58,788 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017314992] [2022-03-03 18:53:58,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-03 18:53:58,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:53:58,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:53:58,789 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:53:58,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-03-03 18:53:58,809 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-03 18:53:58,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:53:58,810 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:53:58,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:54:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:00,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:54:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:01,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017314992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:54:01,351 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:54:01,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:54:01,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923221105] [2022-03-03 18:54:01,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:54:01,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:54:01,352 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:54:01,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:54:01,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=735, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:54:01,352 INFO L87 Difference]: Start difference. First operand 197 states and 469 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:54:23,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:54:23,404 INFO L93 Difference]: Finished difference Result 572 states and 1148 transitions. [2022-03-03 18:54:23,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 18:54:23,404 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:54:23,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:54:23,405 INFO L225 Difference]: With dead ends: 572 [2022-03-03 18:54:23,405 INFO L226 Difference]: Without dead ends: 558 [2022-03-03 18:54:23,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5568 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=2518, Invalid=13232, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 18:54:23,406 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 296 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:54:23,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 457 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-03-03 18:54:23,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-03-03 18:54:23,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 210. [2022-03-03 18:54:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 2.464114832535885) internal successors, (515), 209 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:54:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 515 transitions. [2022-03-03 18:54:23,410 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 515 transitions. Word has length 21 [2022-03-03 18:54:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:54:23,410 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 515 transitions. [2022-03-03 18:54:23,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:54:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 515 transitions. [2022-03-03 18:54:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:54:23,410 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:54:23,410 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:54:23,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Forceful destruction successful, exit code 0 [2022-03-03 18:54:23,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2022-03-03 18:54:23,613 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:54:23,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:54:23,613 INFO L85 PathProgramCache]: Analyzing trace with hash -622560102, now seen corresponding path program 131 times [2022-03-03 18:54:23,613 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:54:23,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325664464] [2022-03-03 18:54:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:54:23,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:54:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:54:24,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:24,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:54:24,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325664464] [2022-03-03 18:54:24,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325664464] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:54:24,149 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784133790] [2022-03-03 18:54:24,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-03 18:54:24,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:54:24,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:54:24,150 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:54:24,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-03-03 18:54:24,177 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-03-03 18:54:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:54:24,180 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:54:24,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:54:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:25,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:54:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:26,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784133790] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:54:26,585 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:54:26,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:54:26,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611062664] [2022-03-03 18:54:26,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:54:26,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:54:26,586 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:54:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:54:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:54:26,586 INFO L87 Difference]: Start difference. First operand 210 states and 515 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:54:47,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:54:47,898 INFO L93 Difference]: Finished difference Result 600 states and 1210 transitions. [2022-03-03 18:54:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-03-03 18:54:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 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 [2022-03-03 18:54:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:54:47,899 INFO L225 Difference]: With dead ends: 600 [2022-03-03 18:54:47,899 INFO L226 Difference]: Without dead ends: 586 [2022-03-03 18:54:47,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5725 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=2764, Invalid=12986, Unknown=0, NotChecked=0, Total=15750 [2022-03-03 18:54:47,900 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 327 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-03-03 18:54:47,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 394 Invalid, 1780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-03-03 18:54:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-03-03 18:54:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 207. [2022-03-03 18:54:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 2.4514563106796117) internal successors, (505), 206 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:54:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 505 transitions. [2022-03-03 18:54:47,904 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 505 transitions. Word has length 21 [2022-03-03 18:54:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:54:47,904 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 505 transitions. [2022-03-03 18:54:47,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:54:47,904 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 505 transitions. [2022-03-03 18:54:47,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:54:47,904 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:54:47,904 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:54:47,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-03-03 18:54:48,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-03-03 18:54:48,121 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:54:48,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:54:48,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1386310238, now seen corresponding path program 132 times [2022-03-03 18:54:48,121 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:54:48,121 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196675342] [2022-03-03 18:54:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:54:48,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:54:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:54:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:48,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:54:48,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196675342] [2022-03-03 18:54:48,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196675342] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:54:48,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177092243] [2022-03-03 18:54:48,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-03 18:54:48,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:54:48,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:54:48,644 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:54:48,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-03-03 18:54:48,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-03 18:54:48,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:54:48,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:54:48,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:54:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:49,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:54:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:54:57,832 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177092243] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:54:57,832 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:54:57,832 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:54:57,832 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473361193] [2022-03-03 18:54:57,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:54:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:54:57,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:54:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:54:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=750, Unknown=1, NotChecked=0, Total=870 [2022-03-03 18:54:57,832 INFO L87 Difference]: Start difference. First operand 207 states and 505 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:09,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:55:09,071 INFO L93 Difference]: Finished difference Result 425 states and 898 transitions. [2022-03-03 18:55:09,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 18:55:09,071 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:55:09,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:55:09,072 INFO L225 Difference]: With dead ends: 425 [2022-03-03 18:55:09,072 INFO L226 Difference]: Without dead ends: 411 [2022-03-03 18:55:09,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1702 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=784, Invalid=5221, Unknown=1, NotChecked=0, Total=6006 [2022-03-03 18:55:09,073 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 244 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 1203 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-03-03 18:55:09,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 241 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1203 Invalid, 0 Unknown, 54 Unchecked, 2.5s Time] [2022-03-03 18:55:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2022-03-03 18:55:09,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 216. [2022-03-03 18:55:09,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.4930232558139536) internal successors, (536), 215 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:55:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 536 transitions. [2022-03-03 18:55:09,076 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 536 transitions. Word has length 21 [2022-03-03 18:55:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:55:09,076 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 536 transitions. [2022-03-03 18:55:09,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:09,076 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 536 transitions. [2022-03-03 18:55:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:55:09,077 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:55:09,077 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:55:09,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-03-03 18:55:09,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-03-03 18:55:09,277 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:55:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:55:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1003589850, now seen corresponding path program 133 times [2022-03-03 18:55:09,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:55:09,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595917957] [2022-03-03 18:55:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:55:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:55:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:55:09,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:09,727 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:55:09,727 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595917957] [2022-03-03 18:55:09,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595917957] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:55:09,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354816486] [2022-03-03 18:55:09,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-03 18:55:09,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:55:09,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:55:09,729 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:55:09,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-03-03 18:55:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:55:09,751 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:55:09,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:55:10,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:10,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:55:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:15,928 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354816486] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:55:15,928 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:55:15,928 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:55:15,928 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873249094] [2022-03-03 18:55:15,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:55:15,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:55:15,928 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:55:15,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:55:15,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:55:15,929 INFO L87 Difference]: Start difference. First operand 216 states and 536 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:55:28,194 INFO L93 Difference]: Finished difference Result 418 states and 894 transitions. [2022-03-03 18:55:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-03-03 18:55:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:55:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:55:28,195 INFO L225 Difference]: With dead ends: 418 [2022-03-03 18:55:28,195 INFO L226 Difference]: Without dead ends: 404 [2022-03-03 18:55:28,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=842, Invalid=5164, Unknown=0, NotChecked=0, Total=6006 [2022-03-03 18:55:28,196 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 218 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 1149 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-03-03 18:55:28,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 283 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1149 Invalid, 0 Unknown, 100 Unchecked, 2.4s Time] [2022-03-03 18:55:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-03-03 18:55:28,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 217. [2022-03-03 18:55:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.4953703703703702) internal successors, (539), 216 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:55:28,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 539 transitions. [2022-03-03 18:55:28,199 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 539 transitions. Word has length 21 [2022-03-03 18:55:28,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:55:28,199 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 539 transitions. [2022-03-03 18:55:28,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 539 transitions. [2022-03-03 18:55:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:55:28,199 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:55:28,199 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:55:28,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Forceful destruction successful, exit code 0 [2022-03-03 18:55:28,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2022-03-03 18:55:28,400 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:55:28,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:55:28,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1212083618, now seen corresponding path program 134 times [2022-03-03 18:55:28,400 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:55:28,400 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795796716] [2022-03-03 18:55:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:55:28,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:55:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:55:28,886 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:28,887 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:55:28,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795796716] [2022-03-03 18:55:28,887 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795796716] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:55:28,887 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777648183] [2022-03-03 18:55:28,887 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-03 18:55:28,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:55:28,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:55:28,888 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:55:28,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-03-03 18:55:28,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-03 18:55:28,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:55:28,912 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:55:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:55:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:29,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:55:32,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:32,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777648183] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:55:32,734 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:55:32,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:55:32,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982775442] [2022-03-03 18:55:32,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:55:32,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:55:32,734 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:55:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:55:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:55:32,735 INFO L87 Difference]: Start difference. First operand 217 states and 539 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 18:55:52,191 INFO L93 Difference]: Finished difference Result 521 states and 1086 transitions. [2022-03-03 18:55:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-03-03 18:55:52,192 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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 21 [2022-03-03 18:55:52,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 18:55:52,193 INFO L225 Difference]: With dead ends: 521 [2022-03-03 18:55:52,193 INFO L226 Difference]: Without dead ends: 507 [2022-03-03 18:55:52,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3508 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1614, Invalid=9098, Unknown=0, NotChecked=0, Total=10712 [2022-03-03 18:55:52,194 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 337 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-03 18:55:52,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 288 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1243 Invalid, 0 Unknown, 159 Unchecked, 2.7s Time] [2022-03-03 18:55:52,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-03-03 18:55:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 217. [2022-03-03 18:55:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 2.5) internal successors, (540), 216 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 18:55:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2022-03-03 18:55:52,197 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 21 [2022-03-03 18:55:52,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 18:55:52,197 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2022-03-03 18:55:52,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 29 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) [2022-03-03 18:55:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2022-03-03 18:55:52,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-03 18:55:52,198 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 18:55:52,198 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 18:55:52,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-03-03 18:55:52,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2022-03-03 18:55:52,407 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 18:55:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 18:55:52,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1196622822, now seen corresponding path program 135 times [2022-03-03 18:55:52,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 18:55:52,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269100644] [2022-03-03 18:55:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 18:55:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 18:55:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 18:55:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:52,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 18:55:52,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269100644] [2022-03-03 18:55:52,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269100644] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-03 18:55:52,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774361103] [2022-03-03 18:55:52,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-03 18:55:52,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:55:52,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 18:55:52,892 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-03 18:55:52,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-03-03 18:55:52,915 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-03 18:55:52,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-03 18:55:52,916 WARN L261 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-03 18:55:52,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-03 18:55:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:54,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-03 18:55:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 18:55:56,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774361103] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-03 18:55:56,705 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-03 18:55:56,705 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-03-03 18:55:56,706 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972939582] [2022-03-03 18:55:56,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-03 18:55:56,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-03 18:55:56,706 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 18:55:56,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-03 18:55:56,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2022-03-03 18:55:56,706 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand has 30 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 29 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-03 18:56:09,566 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 18:56:09,572 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-03 18:56:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-03-03 18:56:09,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1860 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1031, Invalid=5131, Unknown=0, NotChecked=0, Total=6162 [2022-03-03 18:56:09,573 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 175 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 988 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-03 18:56:09,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 125 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 988 Invalid, 0 Unknown, 88 Unchecked, 2.3s Time] [2022-03-03 18:56:09,573 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-03 18:56:09,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Forceful destruction successful, exit code 0 [2022-03-03 18:56:09,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-03 18:56:09,775 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (217states) and FLOYD_HOARE automaton (currently 57 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (277 states constructed, input type IntersectNwa). [2022-03-03 18:56:09,776 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 18:56:09,776 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 18:56:09,779 INFO L732 BasicCegarLoop]: Path program histogram: [135, 3, 2, 1] [2022-03-03 18:56:09,781 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 18:56:09,781 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 18:56:09,782 INFO L202 PluginConnector]: Adding new model mult-comm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 06:56:09 BasicIcfg [2022-03-03 18:56:09,782 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 18:56:09,784 INFO L158 Benchmark]: Toolchain (without parser) took 890830.43ms. Allocated memory was 195.0MB in the beginning and 249.6MB in the end (delta: 54.5MB). Free memory was 157.4MB in the beginning and 96.5MB in the end (delta: 60.9MB). Peak memory consumption was 116.4MB. Max. memory is 8.0GB. [2022-03-03 18:56:09,784 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 18:56:09,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.77ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:56:09,784 INFO L158 Benchmark]: Boogie Preprocessor took 10.46ms. Allocated memory is still 195.0MB. Free memory was 155.8MB in the beginning and 154.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 18:56:09,784 INFO L158 Benchmark]: RCFGBuilder took 162.29ms. Allocated memory is still 195.0MB. Free memory was 154.8MB in the beginning and 145.7MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 18:56:09,784 INFO L158 Benchmark]: TraceAbstraction took 890627.98ms. Allocated memory was 195.0MB in the beginning and 249.6MB in the end (delta: 54.5MB). Free memory was 145.1MB in the beginning and 96.5MB in the end (delta: 48.6MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. [2022-03-03 18:56:09,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 158.4MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.77ms. Allocated memory is still 195.0MB. Free memory was 157.2MB in the beginning and 155.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.46ms. Allocated memory is still 195.0MB. Free memory was 155.8MB in the beginning and 154.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 162.29ms. Allocated memory is still 195.0MB. Free memory was 154.8MB in the beginning and 145.7MB in the end (delta: 9.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 890627.98ms. Allocated memory was 195.0MB in the beginning and 249.6MB in the end (delta: 54.5MB). Free memory was 145.1MB in the beginning and 96.5MB in the end (delta: 48.6MB). Peak memory consumption was 103.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (217states) and FLOYD_HOARE automaton (currently 57 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (277 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (217states) and FLOYD_HOARE automaton (currently 57 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (277 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (217states) and FLOYD_HOARE automaton (currently 57 states, 30 states before enhancement),while ReachableStatesComputation was computing reachable states (277 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 28 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 890.6s, OverallIterations: 141, TraceHistogramMax: 4, PathProgramHistogramMax: 135, EmptinessCheckTime: 0.0s, AutomataDifference: 598.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22163 SdHoareTripleChecker+Valid, 159.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22163 mSDsluCounter, 26097 SdHoareTripleChecker+Invalid, 149.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3786 IncrementalHoareTripleChecker+Unchecked, 42399 mSDsCounter, 5065 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 105912 IncrementalHoareTripleChecker+Invalid, 114763 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5065 mSolverCounterUnsat, 2322 mSDtfsCounter, 105912 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9983 GetRequests, 2539 SyntacticMatches, 246 SemanticMatches, 7198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124008 ImplicationChecksByTransitivity, 607.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=217occurred in iteration=139, InterpolantAutomatonStates: 5218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 140 MinimizatonAttempts, 18125 StatesRemovedByMinimization, 140 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 257.5s InterpolantComputationTime, 5027 NumberOfCodeBlocks, 5027 NumberOfCodeBlocksAsserted, 484 NumberOfCheckSat, 7114 ConstructedInterpolants, 203 QuantifiedInterpolants, 159553 SizeOfPredicates, 1090 NumberOfNonLiveVariables, 7180 ConjunctsInSsa, 3326 ConjunctsInUnsatCore, 421 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3078 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown