/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/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-09 02:53:23,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-09 02:53:23,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-09 02:53:23,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-09 02:53:23,308 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 [2022-02-09 02:53:23,329 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-09 02:53:23,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-09 02:53:23,330 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-09 02:53:23,330 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-09 02:53:23,330 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-09 02:53:23,330 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-09 02:53:23,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-09 02:53:23,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-09 02:53:23,331 INFO L138 SettingsManager]: * Use SBE=true [2022-02-09 02:53:23,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-09 02:53:23,331 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-09 02:53:23,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-09 02:53:23,332 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-09 02:53:23,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-09 02:53:23,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-09 02:53:23,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-09 02:53:23,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-09 02:53:23,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:53:23,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-09 02:53:23,333 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-09 02:53:23,334 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-09 02:53:23,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-09 02:53:23,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-09 02:53:23,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-09 02:53:23,551 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-09 02:53:23,552 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-09 02:53:23,553 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2022-02-09 02:53:23,553 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2022-02-09 02:53:23,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-09 02:53:23,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-09 02:53:23,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-09 02:53:23,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-09 02:53:23,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-09 02:53:23,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,612 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-09 02:53:23,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-09 02:53:23,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-09 02:53:23,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-09 02:53:23,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-09 02:53:23,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-09 02:53:23,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-09 02:53:23,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-09 02:53:23,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-09 02:53:23,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/1) ... [2022-02-09 02:53:23,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-09 02:53:23,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-09 02:53:23,665 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-09 02:53:23,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-09 02:53:23,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-09 02:53:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-09 02:53:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-09 02:53:23,701 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-09 02:53:23,701 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-09 02:53:23,701 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-09 02:53:23,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-09 02:53:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-09 02:53:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-09 02:53:23,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-09 02:53:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-09 02:53:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-09 02:53:23,702 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-09 02:53:23,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-09 02:53:23,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-09 02:53:23,703 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-09 02:53:23,744 INFO L234 CfgBuilder]: Building ICFG [2022-02-09 02:53:23,745 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-09 02:53:23,936 INFO L275 CfgBuilder]: Performing block encoding [2022-02-09 02:53:23,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-09 02:53:23,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-09 02:53:23,946 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:53:23 BoogieIcfgContainer [2022-02-09 02:53:23,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-09 02:53:23,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-09 02:53:23,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-09 02:53:23,963 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-09 02:53:23,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.02 02:53:23" (1/2) ... [2022-02-09 02:53:23,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b81ad6e and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.02 02:53:23, skipping insertion in model container [2022-02-09 02:53:23,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 02:53:23" (2/2) ... [2022-02-09 02:53:23,966 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2022-02-09 02:53:23,970 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-09 02:53:23,970 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-09 02:53:23,970 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-09 02:53:23,970 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-09 02:53:24,084 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-02-09 02:53:24,170 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-09 02:53:24,179 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-09 02:53:24,180 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-09 02:53:24,201 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2022-02-09 02:53:26,879 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:53:27,856 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:53:27,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:53:27,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:53:27,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:53:27,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1741946, now seen corresponding path program 1 times [2022-02-09 02:53:27,867 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:53:27,867 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306762906] [2022-02-09 02:53:27,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:53:27,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:53:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:53:28,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:53:28,036 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:53:28,036 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306762906] [2022-02-09 02:53:28,037 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306762906] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:53:28,037 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:53:28,037 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:53:28,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101475758] [2022-02-09 02:53:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:53:28,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 02:53:28,043 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:53:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 02:53:28,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:53:28,210 INFO L87 Difference]: Start difference. First operand has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 0 states have call successors, (0), 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 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:53:29,973 INFO L93 Difference]: Finished difference Result 93964 states and 349229 transitions. [2022-02-09 02:53:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 02:53:29,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:53:29,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:53:30,798 INFO L225 Difference]: With dead ends: 93964 [2022-02-09 02:53:30,799 INFO L226 Difference]: Without dead ends: 93964 [2022-02-09 02:53:30,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:53:30,804 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:53:30,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:53:31,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2022-02-09 02:53:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2022-02-09 02:53:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.7166650702936264) internal successors, (349229), 93963 states have internal predecessors, (349229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:35,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2022-02-09 02:53:35,314 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2022-02-09 02:53:35,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:53:35,315 INFO L470 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2022-02-09 02:53:35,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:35,316 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2022-02-09 02:53:36,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:53:36,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:53:36,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:53:36,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-09 02:53:36,006 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:53:36,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:53:36,007 INFO L85 PathProgramCache]: Analyzing trace with hash 772254598, now seen corresponding path program 2 times [2022-02-09 02:53:36,007 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:53:36,008 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924235487] [2022-02-09 02:53:36,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:53:36,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:53:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:53:36,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:53:36,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:53:36,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924235487] [2022-02-09 02:53:36,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924235487] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:53:36,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:53:36,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:53:36,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619218290] [2022-02-09 02:53:36,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:53:36,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 02:53:36,114 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:53:36,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 02:53:36,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:53:36,114 INFO L87 Difference]: Start difference. First operand 93964 states and 349229 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:37,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:53:37,086 INFO L93 Difference]: Finished difference Result 93964 states and 344549 transitions. [2022-02-09 02:53:37,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 02:53:37,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:53:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:53:37,866 INFO L225 Difference]: With dead ends: 93964 [2022-02-09 02:53:37,867 INFO L226 Difference]: Without dead ends: 93964 [2022-02-09 02:53:37,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:53:37,868 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 38 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:53:37,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:53:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2022-02-09 02:53:40,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2022-02-09 02:53:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.666858231431521) internal successors, (344549), 93963 states have internal predecessors, (344549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:41,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344549 transitions. [2022-02-09 02:53:41,606 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344549 transitions. Word has length 75 [2022-02-09 02:53:41,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:53:41,606 INFO L470 AbstractCegarLoop]: Abstraction has 93964 states and 344549 transitions. [2022-02-09 02:53:41,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:41,607 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344549 transitions. [2022-02-09 02:53:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:53:42,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:53:42,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:53:42,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-09 02:53:42,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:53:42,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:53:42,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2023226490, now seen corresponding path program 3 times [2022-02-09 02:53:42,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:53:42,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095110782] [2022-02-09 02:53:42,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:53:42,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:53:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:53:42,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:53:42,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:53:42,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095110782] [2022-02-09 02:53:42,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095110782] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:53:42,630 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:53:42,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-09 02:53:42,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135019629] [2022-02-09 02:53:42,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:53:42,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 02:53:42,631 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:53:42,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 02:53:42,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-02-09 02:53:42,631 INFO L87 Difference]: Start difference. First operand 93964 states and 344549 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:53:46,007 INFO L93 Difference]: Finished difference Result 262641 states and 976977 transitions. [2022-02-09 02:53:46,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:53:46,010 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:53:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:53:48,004 INFO L225 Difference]: With dead ends: 262641 [2022-02-09 02:53:48,005 INFO L226 Difference]: Without dead ends: 262641 [2022-02-09 02:53:48,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-02-09 02:53:48,006 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 765 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 02:53:48,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 672 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 02:53:48,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262641 states. [2022-02-09 02:53:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262641 to 118831. [2022-02-09 02:53:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118831 states, 118830 states have (on average 3.6672641588824373) internal successors, (435781), 118830 states have internal predecessors, (435781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:55,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118831 states to 118831 states and 435781 transitions. [2022-02-09 02:53:55,697 INFO L78 Accepts]: Start accepts. Automaton has 118831 states and 435781 transitions. Word has length 75 [2022-02-09 02:53:55,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:53:55,697 INFO L470 AbstractCegarLoop]: Abstraction has 118831 states and 435781 transitions. [2022-02-09 02:53:55,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:55,698 INFO L276 IsEmpty]: Start isEmpty. Operand 118831 states and 435781 transitions. [2022-02-09 02:53:56,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:53:56,093 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:53:56,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:53:56,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-09 02:53:56,094 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:53:56,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:53:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash 517777098, now seen corresponding path program 4 times [2022-02-09 02:53:56,095 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:53:56,095 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030465025] [2022-02-09 02:53:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:53:56,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:53:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:53:56,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:53:56,279 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:53:56,279 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030465025] [2022-02-09 02:53:56,279 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030465025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:53:56,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:53:56,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-09 02:53:56,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336812747] [2022-02-09 02:53:56,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:53:56,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 02:53:56,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:53:56,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 02:53:56,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-02-09 02:53:56,281 INFO L87 Difference]: Start difference. First operand 118831 states and 435781 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:53:59,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:53:59,403 INFO L93 Difference]: Finished difference Result 286851 states and 1061896 transitions. [2022-02-09 02:53:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:53:59,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:53:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:54:01,330 INFO L225 Difference]: With dead ends: 286851 [2022-02-09 02:54:01,330 INFO L226 Difference]: Without dead ends: 286851 [2022-02-09 02:54:01,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2022-02-09 02:54:01,331 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 530 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 02:54:01,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 586 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 02:54:02,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286851 states. [2022-02-09 02:54:10,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286851 to 144827. [2022-02-09 02:54:10,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144827 states, 144826 states have (on average 3.6672627843066854) internal successors, (531115), 144826 states have internal predecessors, (531115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:11,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144827 states to 144827 states and 531115 transitions. [2022-02-09 02:54:11,886 INFO L78 Accepts]: Start accepts. Automaton has 144827 states and 531115 transitions. Word has length 75 [2022-02-09 02:54:11,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:54:11,887 INFO L470 AbstractCegarLoop]: Abstraction has 144827 states and 531115 transitions. [2022-02-09 02:54:11,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:11,887 INFO L276 IsEmpty]: Start isEmpty. Operand 144827 states and 531115 transitions. [2022-02-09 02:54:12,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:54:12,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:54:12,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:54:12,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-09 02:54:12,315 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:54:12,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:54:12,315 INFO L85 PathProgramCache]: Analyzing trace with hash 440272690, now seen corresponding path program 5 times [2022-02-09 02:54:12,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:54:12,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482780834] [2022-02-09 02:54:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:54:12,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:54:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:54:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:54:12,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:54:12,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482780834] [2022-02-09 02:54:12,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482780834] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:54:12,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:54:12,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-09 02:54:12,476 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179909311] [2022-02-09 02:54:12,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:54:12,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 02:54:12,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:54:12,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 02:54:12,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-09 02:54:12,477 INFO L87 Difference]: Start difference. First operand 144827 states and 531115 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:14,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:54:14,849 INFO L93 Difference]: Finished difference Result 180637 states and 650377 transitions. [2022-02-09 02:54:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:54:14,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:54:14,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:54:15,820 INFO L225 Difference]: With dead ends: 180637 [2022-02-09 02:54:15,820 INFO L226 Difference]: Without dead ends: 178902 [2022-02-09 02:54:15,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-02-09 02:54:15,830 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 509 mSDsluCounter, 2006 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:54:15,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 2051 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 02:54:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178902 states. [2022-02-09 02:54:20,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178902 to 148332. [2022-02-09 02:54:20,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148332 states, 148331 states have (on average 3.6590665471142243) internal successors, (542753), 148331 states have internal predecessors, (542753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:21,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148332 states to 148332 states and 542753 transitions. [2022-02-09 02:54:21,806 INFO L78 Accepts]: Start accepts. Automaton has 148332 states and 542753 transitions. Word has length 75 [2022-02-09 02:54:21,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:54:21,806 INFO L470 AbstractCegarLoop]: Abstraction has 148332 states and 542753 transitions. [2022-02-09 02:54:21,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 148332 states and 542753 transitions. [2022-02-09 02:54:22,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:54:22,689 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:54:22,689 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:54:22,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-09 02:54:22,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:54:22,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:54:22,690 INFO L85 PathProgramCache]: Analyzing trace with hash -87503410, now seen corresponding path program 6 times [2022-02-09 02:54:22,690 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:54:22,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211308099] [2022-02-09 02:54:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:54:22,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:54:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:54:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:54:22,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:54:22,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211308099] [2022-02-09 02:54:22,987 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211308099] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:54:22,987 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:54:22,987 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-09 02:54:22,987 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402798523] [2022-02-09 02:54:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:54:22,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 02:54:22,988 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:54:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 02:54:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-09 02:54:22,988 INFO L87 Difference]: Start difference. First operand 148332 states and 542753 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:54:25,142 INFO L93 Difference]: Finished difference Result 205492 states and 753582 transitions. [2022-02-09 02:54:25,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-09 02:54:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:54:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:54:27,297 INFO L225 Difference]: With dead ends: 205492 [2022-02-09 02:54:27,297 INFO L226 Difference]: Without dead ends: 205310 [2022-02-09 02:54:27,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-02-09 02:54:27,299 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 404 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:54:27,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 728 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 02:54:27,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205310 states. [2022-02-09 02:54:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205310 to 167100. [2022-02-09 02:54:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167100 states, 167099 states have (on average 3.6677717999509274) internal successors, (612881), 167099 states have internal predecessors, (612881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167100 states to 167100 states and 612881 transitions. [2022-02-09 02:54:35,770 INFO L78 Accepts]: Start accepts. Automaton has 167100 states and 612881 transitions. Word has length 75 [2022-02-09 02:54:35,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:54:35,771 INFO L470 AbstractCegarLoop]: Abstraction has 167100 states and 612881 transitions. [2022-02-09 02:54:35,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:35,772 INFO L276 IsEmpty]: Start isEmpty. Operand 167100 states and 612881 transitions. [2022-02-09 02:54:36,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:54:36,276 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:54:36,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:54:36,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-09 02:54:36,276 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:54:36,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:54:36,277 INFO L85 PathProgramCache]: Analyzing trace with hash 812973998, now seen corresponding path program 7 times [2022-02-09 02:54:36,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:54:36,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174344886] [2022-02-09 02:54:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:54:36,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:54:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:54:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:54:36,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:54:36,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174344886] [2022-02-09 02:54:36,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174344886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:54:36,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:54:36,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-09 02:54:36,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922202034] [2022-02-09 02:54:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:54:36,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-09 02:54:36,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:54:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-09 02:54:36,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-02-09 02:54:36,395 INFO L87 Difference]: Start difference. First operand 167100 states and 612881 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:54:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:54:42,900 INFO L93 Difference]: Finished difference Result 570440 states and 2121061 transitions. [2022-02-09 02:54:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 02:54:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:54:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:54:47,481 INFO L225 Difference]: With dead ends: 570440 [2022-02-09 02:54:47,481 INFO L226 Difference]: Without dead ends: 569725 [2022-02-09 02:54:47,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-02-09 02:54:47,482 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 792 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 02:54:47,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 804 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 02:54:48,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569725 states. [2022-02-09 02:55:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569725 to 171699. [2022-02-09 02:55:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171699 states, 171698 states have (on average 3.665948351174737) internal successors, (629436), 171698 states have internal predecessors, (629436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:05,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171699 states to 171699 states and 629436 transitions. [2022-02-09 02:55:05,285 INFO L78 Accepts]: Start accepts. Automaton has 171699 states and 629436 transitions. Word has length 75 [2022-02-09 02:55:05,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:55:05,285 INFO L470 AbstractCegarLoop]: Abstraction has 171699 states and 629436 transitions. [2022-02-09 02:55:05,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:05,285 INFO L276 IsEmpty]: Start isEmpty. Operand 171699 states and 629436 transitions. [2022-02-09 02:55:06,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:55:06,051 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:55:06,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:55:06,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-09 02:55:06,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:55:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:55:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 861564656, now seen corresponding path program 8 times [2022-02-09 02:55:06,056 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:55:06,056 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174832393] [2022-02-09 02:55:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:55:06,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:55:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:55:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:55:06,283 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:55:06,283 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174832393] [2022-02-09 02:55:06,283 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174832393] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:55:06,283 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:55:06,283 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-02-09 02:55:06,283 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492817861] [2022-02-09 02:55:06,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:55:06,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-09 02:55:06,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:55:06,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-09 02:55:06,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-02-09 02:55:06,284 INFO L87 Difference]: Start difference. First operand 171699 states and 629436 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:55:09,318 INFO L93 Difference]: Finished difference Result 254460 states and 933363 transitions. [2022-02-09 02:55:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-09 02:55:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:55:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:55:11,068 INFO L225 Difference]: With dead ends: 254460 [2022-02-09 02:55:11,069 INFO L226 Difference]: Without dead ends: 252975 [2022-02-09 02:55:11,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-02-09 02:55:11,071 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 429 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:55:11,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 378 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 02:55:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252975 states. [2022-02-09 02:55:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252975 to 171137. [2022-02-09 02:55:19,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171137 states, 171136 states have (on average 3.665984947643979) internal successors, (627382), 171136 states have internal predecessors, (627382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:20,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171137 states to 171137 states and 627382 transitions. [2022-02-09 02:55:20,455 INFO L78 Accepts]: Start accepts. Automaton has 171137 states and 627382 transitions. Word has length 75 [2022-02-09 02:55:20,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:55:20,455 INFO L470 AbstractCegarLoop]: Abstraction has 171137 states and 627382 transitions. [2022-02-09 02:55:20,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 171137 states and 627382 transitions. [2022-02-09 02:55:21,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:55:21,397 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:55:21,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:55:21,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-09 02:55:21,397 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:55:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:55:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash -124398130, now seen corresponding path program 9 times [2022-02-09 02:55:21,398 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:55:21,398 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752226978] [2022-02-09 02:55:21,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:55:21,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:55:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:55:21,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:55:21,620 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:55:21,621 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752226978] [2022-02-09 02:55:21,621 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752226978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:55:21,621 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:55:21,621 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-09 02:55:21,621 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601924874] [2022-02-09 02:55:21,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:55:21,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 02:55:21,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:55:21,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 02:55:21,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-02-09 02:55:21,623 INFO L87 Difference]: Start difference. First operand 171137 states and 627382 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:26,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:55:26,536 INFO L93 Difference]: Finished difference Result 436323 states and 1618763 transitions. [2022-02-09 02:55:26,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:55:26,537 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:55:26,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:55:29,546 INFO L225 Difference]: With dead ends: 436323 [2022-02-09 02:55:29,546 INFO L226 Difference]: Without dead ends: 436057 [2022-02-09 02:55:29,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=218, Unknown=0, NotChecked=0, Total=342 [2022-02-09 02:55:29,547 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 668 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:55:29,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 528 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 02:55:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436057 states. [2022-02-09 02:55:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436057 to 152369. [2022-02-09 02:55:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152369 states, 152368 states have (on average 3.6566930064055443) internal successors, (557163), 152368 states have internal predecessors, (557163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:42,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152369 states to 152369 states and 557163 transitions. [2022-02-09 02:55:42,875 INFO L78 Accepts]: Start accepts. Automaton has 152369 states and 557163 transitions. Word has length 75 [2022-02-09 02:55:42,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:55:42,875 INFO L470 AbstractCegarLoop]: Abstraction has 152369 states and 557163 transitions. [2022-02-09 02:55:42,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:42,876 INFO L276 IsEmpty]: Start isEmpty. Operand 152369 states and 557163 transitions. [2022-02-09 02:55:44,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:55:44,193 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:55:44,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:55:44,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-09 02:55:44,193 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:55:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:55:44,194 INFO L85 PathProgramCache]: Analyzing trace with hash 776079278, now seen corresponding path program 10 times [2022-02-09 02:55:44,194 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:55:44,195 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070681208] [2022-02-09 02:55:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:55:44,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:55:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:55:44,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:55:44,362 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:55:44,362 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070681208] [2022-02-09 02:55:44,362 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070681208] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:55:44,362 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:55:44,362 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-09 02:55:44,362 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658182054] [2022-02-09 02:55:44,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:55:44,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 02:55:44,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:55:44,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 02:55:44,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-02-09 02:55:44,363 INFO L87 Difference]: Start difference. First operand 152369 states and 557163 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:55:49,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:55:49,337 INFO L93 Difference]: Finished difference Result 381168 states and 1403447 transitions. [2022-02-09 02:55:49,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 02:55:49,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:55:49,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:55:52,326 INFO L225 Difference]: With dead ends: 381168 [2022-02-09 02:55:52,327 INFO L226 Difference]: Without dead ends: 381168 [2022-02-09 02:55:52,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2022-02-09 02:55:52,334 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 759 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-09 02:55:52,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [759 Valid, 596 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-09 02:55:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381168 states. [2022-02-09 02:56:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381168 to 177869. [2022-02-09 02:56:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177869 states, 177868 states have (on average 3.664993140980952) internal successors, (651885), 177868 states have internal predecessors, (651885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177869 states to 177869 states and 651885 transitions. [2022-02-09 02:56:05,541 INFO L78 Accepts]: Start accepts. Automaton has 177869 states and 651885 transitions. Word has length 75 [2022-02-09 02:56:05,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:56:05,542 INFO L470 AbstractCegarLoop]: Abstraction has 177869 states and 651885 transitions. [2022-02-09 02:56:05,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:05,542 INFO L276 IsEmpty]: Start isEmpty. Operand 177869 states and 651885 transitions. [2022-02-09 02:56:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:56:06,099 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:56:06,100 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:56:06,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-09 02:56:06,100 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:56:06,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:56:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 170424594, now seen corresponding path program 11 times [2022-02-09 02:56:06,101 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:56:06,101 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539316068] [2022-02-09 02:56:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:56:06,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:56:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:56:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:56:06,224 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:56:06,224 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539316068] [2022-02-09 02:56:06,225 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539316068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:56:06,225 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:56:06,225 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-09 02:56:06,225 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103484896] [2022-02-09 02:56:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:56:06,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 02:56:06,225 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:56:06,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 02:56:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-09 02:56:06,226 INFO L87 Difference]: Start difference. First operand 177869 states and 651885 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:09,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:56:09,028 INFO L93 Difference]: Finished difference Result 212927 states and 768581 transitions. [2022-02-09 02:56:09,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:56:09,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:56:09,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:56:10,124 INFO L225 Difference]: With dead ends: 212927 [2022-02-09 02:56:10,125 INFO L226 Difference]: Without dead ends: 211402 [2022-02-09 02:56:10,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-02-09 02:56:10,125 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 490 mSDsluCounter, 2018 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-02-09 02:56:10,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2061 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-02-09 02:56:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211402 states. [2022-02-09 02:56:15,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211402 to 177438. [2022-02-09 02:56:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177438 states, 177437 states have (on average 3.6636045469659653) internal successors, (650059), 177437 states have internal predecessors, (650059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:17,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177438 states to 177438 states and 650059 transitions. [2022-02-09 02:56:17,896 INFO L78 Accepts]: Start accepts. Automaton has 177438 states and 650059 transitions. Word has length 75 [2022-02-09 02:56:17,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:56:17,897 INFO L470 AbstractCegarLoop]: Abstraction has 177438 states and 650059 transitions. [2022-02-09 02:56:17,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:17,897 INFO L276 IsEmpty]: Start isEmpty. Operand 177438 states and 650059 transitions. [2022-02-09 02:56:19,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:56:19,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:56:19,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:56:19,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-09 02:56:19,151 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:56:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:56:19,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1573335122, now seen corresponding path program 12 times [2022-02-09 02:56:19,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:56:19,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333979816] [2022-02-09 02:56:19,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:56:19,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:56:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:56:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:56:19,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:56:19,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333979816] [2022-02-09 02:56:19,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333979816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:56:19,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:56:19,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-09 02:56:19,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529398329] [2022-02-09 02:56:19,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:56:19,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-09 02:56:19,214 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:56:19,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-09 02:56:19,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:56:19,214 INFO L87 Difference]: Start difference. First operand 177438 states and 650059 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:56:21,286 INFO L93 Difference]: Finished difference Result 167062 states and 602986 transitions. [2022-02-09 02:56:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-09 02:56:21,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:56:21,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:56:22,646 INFO L225 Difference]: With dead ends: 167062 [2022-02-09 02:56:22,656 INFO L226 Difference]: Without dead ends: 166910 [2022-02-09 02:56:22,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-09 02:56:22,671 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 40 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-09 02:56:22,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 169 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-09 02:56:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166910 states. [2022-02-09 02:56:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166910 to 166874. [2022-02-09 02:56:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166874 states, 166873 states have (on average 3.609906935214205) internal successors, (602396), 166873 states have internal predecessors, (602396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:29,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166874 states to 166874 states and 602396 transitions. [2022-02-09 02:56:29,866 INFO L78 Accepts]: Start accepts. Automaton has 166874 states and 602396 transitions. Word has length 75 [2022-02-09 02:56:29,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:56:29,867 INFO L470 AbstractCegarLoop]: Abstraction has 166874 states and 602396 transitions. [2022-02-09 02:56:29,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:29,867 INFO L276 IsEmpty]: Start isEmpty. Operand 166874 states and 602396 transitions. [2022-02-09 02:56:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:56:30,365 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:56:30,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:56:30,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-09 02:56:30,366 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:56:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:56:30,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1722687696, now seen corresponding path program 13 times [2022-02-09 02:56:30,366 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:56:30,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534145397] [2022-02-09 02:56:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:56:30,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:56:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:56:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:56:30,461 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:56:30,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534145397] [2022-02-09 02:56:30,461 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534145397] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:56:30,462 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:56:30,462 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-02-09 02:56:30,462 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026575817] [2022-02-09 02:56:30,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:56:30,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-02-09 02:56:30,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:56:30,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-02-09 02:56:30,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-02-09 02:56:30,463 INFO L87 Difference]: Start difference. First operand 166874 states and 602396 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:36,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:56:36,344 INFO L93 Difference]: Finished difference Result 420984 states and 1533690 transitions. [2022-02-09 02:56:36,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 02:56:36,345 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:56:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:56:39,807 INFO L225 Difference]: With dead ends: 420984 [2022-02-09 02:56:39,808 INFO L226 Difference]: Without dead ends: 419336 [2022-02-09 02:56:39,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=189, Invalid=363, Unknown=0, NotChecked=0, Total=552 [2022-02-09 02:56:39,808 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 731 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 02:56:39,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 736 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 02:56:41,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419336 states. [2022-02-09 02:56:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419336 to 183874. [2022-02-09 02:56:49,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183874 states, 183873 states have (on average 3.6044280563214826) internal successors, (662757), 183873 states have internal predecessors, (662757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183874 states to 183874 states and 662757 transitions. [2022-02-09 02:56:51,242 INFO L78 Accepts]: Start accepts. Automaton has 183874 states and 662757 transitions. Word has length 75 [2022-02-09 02:56:51,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:56:51,242 INFO L470 AbstractCegarLoop]: Abstraction has 183874 states and 662757 transitions. [2022-02-09 02:56:51,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 183874 states and 662757 transitions. [2022-02-09 02:56:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:56:52,261 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:56:52,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:56:52,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-09 02:56:52,262 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:56:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:56:52,262 INFO L85 PathProgramCache]: Analyzing trace with hash 453153538, now seen corresponding path program 14 times [2022-02-09 02:56:52,262 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:56:52,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971104019] [2022-02-09 02:56:52,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:56:52,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:56:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:56:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:56:52,551 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:56:52,552 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971104019] [2022-02-09 02:56:52,552 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971104019] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:56:52,552 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:56:52,552 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-09 02:56:52,552 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317865030] [2022-02-09 02:56:52,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:56:52,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-09 02:56:52,553 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:56:52,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-09 02:56:52,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-02-09 02:56:52,553 INFO L87 Difference]: Start difference. First operand 183874 states and 662757 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:56:55,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:56:55,797 INFO L93 Difference]: Finished difference Result 273303 states and 981280 transitions. [2022-02-09 02:56:55,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-09 02:56:55,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:56:55,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:56:57,587 INFO L225 Difference]: With dead ends: 273303 [2022-02-09 02:56:57,587 INFO L226 Difference]: Without dead ends: 272472 [2022-02-09 02:56:57,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-02-09 02:56:57,588 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 394 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 1167 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 02:56:57,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1416 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1167 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 02:56:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272472 states. [2022-02-09 02:57:04,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272472 to 186052. [2022-02-09 02:57:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186052 states, 186051 states have (on average 3.602410091856534) internal successors, (670232), 186051 states have internal predecessors, (670232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:07,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186052 states to 186052 states and 670232 transitions. [2022-02-09 02:57:07,619 INFO L78 Accepts]: Start accepts. Automaton has 186052 states and 670232 transitions. Word has length 75 [2022-02-09 02:57:07,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:57:07,619 INFO L470 AbstractCegarLoop]: Abstraction has 186052 states and 670232 transitions. [2022-02-09 02:57:07,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 186052 states and 670232 transitions. [2022-02-09 02:57:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:57:08,890 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:57:08,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:57:08,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-09 02:57:08,891 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:57:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:57:08,891 INFO L85 PathProgramCache]: Analyzing trace with hash -178632800, now seen corresponding path program 15 times [2022-02-09 02:57:08,892 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:57:08,892 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245787860] [2022-02-09 02:57:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:57:08,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:57:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:57:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:57:09,389 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:57:09,389 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245787860] [2022-02-09 02:57:09,390 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245787860] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:57:09,390 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:57:09,390 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-09 02:57:09,390 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843296342] [2022-02-09 02:57:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:57:09,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 02:57:09,390 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:57:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 02:57:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-02-09 02:57:09,391 INFO L87 Difference]: Start difference. First operand 186052 states and 670232 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:13,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:57:13,357 INFO L93 Difference]: Finished difference Result 283660 states and 1018903 transitions. [2022-02-09 02:57:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-02-09 02:57:13,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:57:13,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:57:15,323 INFO L225 Difference]: With dead ends: 283660 [2022-02-09 02:57:15,323 INFO L226 Difference]: Without dead ends: 282804 [2022-02-09 02:57:15,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2022-02-09 02:57:15,324 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 462 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 02:57:15,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1525 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 02:57:15,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282804 states. [2022-02-09 02:57:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282804 to 186012. [2022-02-09 02:57:22,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186012 states, 186011 states have (on average 3.602265457419185) internal successors, (670061), 186011 states have internal predecessors, (670061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186012 states to 186012 states and 670061 transitions. [2022-02-09 02:57:24,904 INFO L78 Accepts]: Start accepts. Automaton has 186012 states and 670061 transitions. Word has length 75 [2022-02-09 02:57:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:57:24,904 INFO L470 AbstractCegarLoop]: Abstraction has 186012 states and 670061 transitions. [2022-02-09 02:57:24,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 186012 states and 670061 transitions. [2022-02-09 02:57:25,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:57:25,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:57:25,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:57:25,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-09 02:57:25,920 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:57:25,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:57:25,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1857976806, now seen corresponding path program 16 times [2022-02-09 02:57:25,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:57:25,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434256961] [2022-02-09 02:57:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:57:25,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:57:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:57:26,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:57:26,303 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:57:26,303 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434256961] [2022-02-09 02:57:26,304 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434256961] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:57:26,304 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:57:26,304 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-09 02:57:26,304 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501473703] [2022-02-09 02:57:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:57:26,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 02:57:26,304 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:57:26,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 02:57:26,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-09 02:57:26,305 INFO L87 Difference]: Start difference. First operand 186012 states and 670061 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:30,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:57:30,702 INFO L93 Difference]: Finished difference Result 231483 states and 828042 transitions. [2022-02-09 02:57:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-02-09 02:57:30,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:57:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:57:32,854 INFO L225 Difference]: With dead ends: 231483 [2022-02-09 02:57:32,854 INFO L226 Difference]: Without dead ends: 229890 [2022-02-09 02:57:32,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=225, Invalid=767, Unknown=0, NotChecked=0, Total=992 [2022-02-09 02:57:32,855 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 846 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:57:32,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1098 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-09 02:57:33,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229890 states. [2022-02-09 02:57:39,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229890 to 209728. [2022-02-09 02:57:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209728 states, 209727 states have (on average 3.590429463063888) internal successors, (753010), 209727 states have internal predecessors, (753010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209728 states to 209728 states and 753010 transitions. [2022-02-09 02:57:42,170 INFO L78 Accepts]: Start accepts. Automaton has 209728 states and 753010 transitions. Word has length 75 [2022-02-09 02:57:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:57:42,170 INFO L470 AbstractCegarLoop]: Abstraction has 209728 states and 753010 transitions. [2022-02-09 02:57:42,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 209728 states and 753010 transitions. [2022-02-09 02:57:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:57:43,233 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:57:43,233 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:57:43,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-09 02:57:43,233 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:57:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:57:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2001758020, now seen corresponding path program 17 times [2022-02-09 02:57:43,234 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:57:43,234 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095635031] [2022-02-09 02:57:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:57:43,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:57:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:57:43,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:57:43,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:57:43,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095635031] [2022-02-09 02:57:43,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095635031] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:57:43,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:57:43,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-09 02:57:43,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208031516] [2022-02-09 02:57:43,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:57:43,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 02:57:43,976 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:57:43,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 02:57:43,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-02-09 02:57:43,976 INFO L87 Difference]: Start difference. First operand 209728 states and 753010 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:57:46,917 INFO L93 Difference]: Finished difference Result 212798 states and 762994 transitions. [2022-02-09 02:57:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-09 02:57:46,918 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:57:46,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:57:49,124 INFO L225 Difference]: With dead ends: 212798 [2022-02-09 02:57:49,124 INFO L226 Difference]: Without dead ends: 210755 [2022-02-09 02:57:49,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-02-09 02:57:49,126 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 267 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-02-09 02:57:49,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 635 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-02-09 02:57:49,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210755 states. [2022-02-09 02:57:55,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210755 to 210548. [2022-02-09 02:57:56,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210548 states, 210547 states have (on average 3.5891036205692792) internal successors, (755675), 210547 states have internal predecessors, (755675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:58,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210548 states to 210548 states and 755675 transitions. [2022-02-09 02:57:58,521 INFO L78 Accepts]: Start accepts. Automaton has 210548 states and 755675 transitions. Word has length 75 [2022-02-09 02:57:58,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:57:58,521 INFO L470 AbstractCegarLoop]: Abstraction has 210548 states and 755675 transitions. [2022-02-09 02:57:58,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:57:58,521 INFO L276 IsEmpty]: Start isEmpty. Operand 210548 states and 755675 transitions. [2022-02-09 02:58:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:58:00,073 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:58:00,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:58:00,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-09 02:58:00,073 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:58:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:58:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1303900452, now seen corresponding path program 18 times [2022-02-09 02:58:00,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:58:00,074 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173861424] [2022-02-09 02:58:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:58:00,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:58:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:58:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:58:00,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:58:00,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173861424] [2022-02-09 02:58:00,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173861424] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:58:00,619 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:58:00,619 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-09 02:58:00,619 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233509875] [2022-02-09 02:58:00,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:58:00,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 02:58:00,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:58:00,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 02:58:00,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-02-09 02:58:00,620 INFO L87 Difference]: Start difference. First operand 210548 states and 755675 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:04,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:58:04,456 INFO L93 Difference]: Finished difference Result 213070 states and 763817 transitions. [2022-02-09 02:58:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:58:04,456 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:58:04,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:58:06,067 INFO L225 Difference]: With dead ends: 213070 [2022-02-09 02:58:06,067 INFO L226 Difference]: Without dead ends: 211594 [2022-02-09 02:58:06,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-02-09 02:58:06,068 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 320 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-09 02:58:06,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 839 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-09 02:58:06,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211594 states. [2022-02-09 02:58:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211594 to 210503. [2022-02-09 02:58:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210503 states, 210502 states have (on average 3.5892058032702776) internal successors, (755535), 210502 states have internal predecessors, (755535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210503 states to 210503 states and 755535 transitions. [2022-02-09 02:58:15,638 INFO L78 Accepts]: Start accepts. Automaton has 210503 states and 755535 transitions. Word has length 75 [2022-02-09 02:58:15,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:58:15,638 INFO L470 AbstractCegarLoop]: Abstraction has 210503 states and 755535 transitions. [2022-02-09 02:58:15,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 210503 states and 755535 transitions. [2022-02-09 02:58:17,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:58:17,157 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:58:17,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:58:17,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-09 02:58:17,157 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:58:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:58:17,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1101606842, now seen corresponding path program 19 times [2022-02-09 02:58:17,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:58:17,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206875821] [2022-02-09 02:58:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:58:17,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:58:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:58:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:58:17,527 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:58:17,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206875821] [2022-02-09 02:58:17,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206875821] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:58:17,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:58:17,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-09 02:58:17,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016628905] [2022-02-09 02:58:17,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:58:17,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-02-09 02:58:17,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:58:17,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-02-09 02:58:17,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-02-09 02:58:17,529 INFO L87 Difference]: Start difference. First operand 210503 states and 755535 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:20,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:58:20,845 INFO L93 Difference]: Finished difference Result 214310 states and 768040 transitions. [2022-02-09 02:58:20,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-02-09 02:58:20,846 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:58:20,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:58:22,917 INFO L225 Difference]: With dead ends: 214310 [2022-02-09 02:58:22,917 INFO L226 Difference]: Without dead ends: 212069 [2022-02-09 02:58:22,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2022-02-09 02:58:22,918 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 483 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 02:58:22,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 529 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 02:58:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212069 states. [2022-02-09 02:58:28,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212069 to 210071. [2022-02-09 02:58:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210071 states, 210070 states have (on average 3.590112819536345) internal successors, (754175), 210070 states have internal predecessors, (754175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:32,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210071 states to 210071 states and 754175 transitions. [2022-02-09 02:58:32,114 INFO L78 Accepts]: Start accepts. Automaton has 210071 states and 754175 transitions. Word has length 75 [2022-02-09 02:58:32,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:58:32,114 INFO L470 AbstractCegarLoop]: Abstraction has 210071 states and 754175 transitions. [2022-02-09 02:58:32,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:32,115 INFO L276 IsEmpty]: Start isEmpty. Operand 210071 states and 754175 transitions. [2022-02-09 02:58:33,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:58:33,202 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:58:33,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:58:33,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-09 02:58:33,203 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:58:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:58:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1694511510, now seen corresponding path program 20 times [2022-02-09 02:58:33,203 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:58:33,203 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819651128] [2022-02-09 02:58:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:58:33,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:58:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:58:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:58:33,831 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:58:33,831 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819651128] [2022-02-09 02:58:33,831 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819651128] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:58:33,831 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:58:33,831 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-09 02:58:33,831 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085511921] [2022-02-09 02:58:33,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:58:33,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-09 02:58:33,832 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:58:33,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-09 02:58:33,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-02-09 02:58:33,832 INFO L87 Difference]: Start difference. First operand 210071 states and 754175 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:38,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:58:38,693 INFO L93 Difference]: Finished difference Result 331137 states and 1175862 transitions. [2022-02-09 02:58:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 02:58:38,694 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:58:38,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:58:41,435 INFO L225 Difference]: With dead ends: 331137 [2022-02-09 02:58:41,436 INFO L226 Difference]: Without dead ends: 331137 [2022-02-09 02:58:41,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=796, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 02:58:41,436 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 954 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 1177 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 02:58:41,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 1600 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1177 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 02:58:42,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331137 states. [2022-02-09 02:58:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331137 to 249878. [2022-02-09 02:58:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249878 states, 249877 states have (on average 3.576687730363339) internal successors, (893732), 249877 states have internal predecessors, (893732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:55,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249878 states to 249878 states and 893732 transitions. [2022-02-09 02:58:55,984 INFO L78 Accepts]: Start accepts. Automaton has 249878 states and 893732 transitions. Word has length 75 [2022-02-09 02:58:55,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:58:55,985 INFO L470 AbstractCegarLoop]: Abstraction has 249878 states and 893732 transitions. [2022-02-09 02:58:55,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:58:55,985 INFO L276 IsEmpty]: Start isEmpty. Operand 249878 states and 893732 transitions. [2022-02-09 02:58:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:58:57,860 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:58:57,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:58:57,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-09 02:58:57,861 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:58:57,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:58:57,863 INFO L85 PathProgramCache]: Analyzing trace with hash 619290576, now seen corresponding path program 21 times [2022-02-09 02:58:57,863 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:58:57,863 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101438681] [2022-02-09 02:58:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:58:57,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:58:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:58:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:58:57,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:58:57,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101438681] [2022-02-09 02:58:57,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101438681] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:58:57,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:58:57,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-02-09 02:58:57,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058249543] [2022-02-09 02:58:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:58:57,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-09 02:58:57,969 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:58:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-09 02:58:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-02-09 02:58:57,970 INFO L87 Difference]: Start difference. First operand 249878 states and 893732 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:01,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:59:01,607 INFO L93 Difference]: Finished difference Result 298811 states and 1056013 transitions. [2022-02-09 02:59:01,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-09 02:59:01,608 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:59:01,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:59:04,073 INFO L225 Difference]: With dead ends: 298811 [2022-02-09 02:59:04,074 INFO L226 Difference]: Without dead ends: 295562 [2022-02-09 02:59:04,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-02-09 02:59:04,088 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 490 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-02-09 02:59:04,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [490 Valid, 2031 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-02-09 02:59:04,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295562 states. [2022-02-09 02:59:14,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295562 to 253292. [2022-02-09 02:59:15,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253292 states, 253291 states have (on average 3.570817755072229) internal successors, (904456), 253291 states have internal predecessors, (904456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253292 states to 253292 states and 904456 transitions. [2022-02-09 02:59:17,105 INFO L78 Accepts]: Start accepts. Automaton has 253292 states and 904456 transitions. Word has length 75 [2022-02-09 02:59:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:59:17,105 INFO L470 AbstractCegarLoop]: Abstraction has 253292 states and 904456 transitions. [2022-02-09 02:59:17,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:17,105 INFO L276 IsEmpty]: Start isEmpty. Operand 253292 states and 904456 transitions. [2022-02-09 02:59:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:59:18,321 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:59:18,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:59:18,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-09 02:59:18,321 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:59:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:59:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1066439542, now seen corresponding path program 22 times [2022-02-09 02:59:18,322 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:59:18,322 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618880880] [2022-02-09 02:59:18,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:59:18,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:59:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:59:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:59:18,546 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:59:18,546 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618880880] [2022-02-09 02:59:18,546 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618880880] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:59:18,546 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:59:18,546 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-09 02:59:18,546 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597507394] [2022-02-09 02:59:18,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:59:18,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-09 02:59:18,547 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:59:18,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-09 02:59:18,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-02-09 02:59:18,547 INFO L87 Difference]: Start difference. First operand 253292 states and 904456 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:22,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:59:22,308 INFO L93 Difference]: Finished difference Result 318272 states and 1121848 transitions. [2022-02-09 02:59:22,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-09 02:59:22,311 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:59:22,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:59:26,195 INFO L225 Difference]: With dead ends: 318272 [2022-02-09 02:59:26,195 INFO L226 Difference]: Without dead ends: 310588 [2022-02-09 02:59:26,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=742, Unknown=0, NotChecked=0, Total=992 [2022-02-09 02:59:26,204 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 841 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-09 02:59:26,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1388 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-09 02:59:27,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310588 states. [2022-02-09 02:59:36,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310588 to 266094. [2022-02-09 02:59:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266094 states, 266093 states have (on average 3.560800171368657) internal successors, (947504), 266093 states have internal predecessors, (947504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266094 states to 266094 states and 947504 transitions. [2022-02-09 02:59:39,458 INFO L78 Accepts]: Start accepts. Automaton has 266094 states and 947504 transitions. Word has length 75 [2022-02-09 02:59:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 02:59:39,459 INFO L470 AbstractCegarLoop]: Abstraction has 266094 states and 947504 transitions. [2022-02-09 02:59:39,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:39,459 INFO L276 IsEmpty]: Start isEmpty. Operand 266094 states and 947504 transitions. [2022-02-09 02:59:40,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 02:59:40,686 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 02:59:40,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 02:59:40,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-09 02:59:40,686 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 02:59:40,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 02:59:40,687 INFO L85 PathProgramCache]: Analyzing trace with hash -571101656, now seen corresponding path program 23 times [2022-02-09 02:59:40,687 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 02:59:40,687 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973704364] [2022-02-09 02:59:40,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 02:59:40,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 02:59:40,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 02:59:41,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 02:59:41,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 02:59:41,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973704364] [2022-02-09 02:59:41,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973704364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 02:59:41,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 02:59:41,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-02-09 02:59:41,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751884995] [2022-02-09 02:59:41,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 02:59:41,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-02-09 02:59:41,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 02:59:41,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-02-09 02:59:41,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-02-09 02:59:41,081 INFO L87 Difference]: Start difference. First operand 266094 states and 947504 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 02:59:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 02:59:45,200 INFO L93 Difference]: Finished difference Result 286281 states and 1011915 transitions. [2022-02-09 02:59:45,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-02-09 02:59:45,200 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 02:59:45,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 02:59:47,752 INFO L225 Difference]: With dead ends: 286281 [2022-02-09 02:59:47,752 INFO L226 Difference]: Without dead ends: 285876 [2022-02-09 02:59:47,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=580, Unknown=0, NotChecked=0, Total=756 [2022-02-09 02:59:47,753 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 476 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-09 02:59:47,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1664 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-09 02:59:48,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285876 states. [2022-02-09 02:59:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285876 to 266391. [2022-02-09 02:59:57,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266391 states, 266390 states have (on average 3.5601298847554337) internal successors, (948383), 266390 states have internal predecessors, (948383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:00,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266391 states to 266391 states and 948383 transitions. [2022-02-09 03:00:00,120 INFO L78 Accepts]: Start accepts. Automaton has 266391 states and 948383 transitions. Word has length 75 [2022-02-09 03:00:00,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:00:00,120 INFO L470 AbstractCegarLoop]: Abstraction has 266391 states and 948383 transitions. [2022-02-09 03:00:00,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:00,120 INFO L276 IsEmpty]: Start isEmpty. Operand 266391 states and 948383 transitions. [2022-02-09 03:00:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 03:00:01,328 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:00:01,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:00:01,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-09 03:00:01,329 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 03:00:01,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:00:01,330 INFO L85 PathProgramCache]: Analyzing trace with hash 56970312, now seen corresponding path program 24 times [2022-02-09 03:00:01,330 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:00:01,330 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973166055] [2022-02-09 03:00:01,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:00:01,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:00:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:00:02,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:00:02,212 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:00:02,212 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973166055] [2022-02-09 03:00:02,212 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973166055] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:00:02,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:00:02,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-09 03:00:02,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485569057] [2022-02-09 03:00:02,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:00:02,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 03:00:02,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:00:02,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 03:00:02,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-02-09 03:00:02,214 INFO L87 Difference]: Start difference. First operand 266391 states and 948383 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:00:06,766 INFO L93 Difference]: Finished difference Result 293357 states and 1034384 transitions. [2022-02-09 03:00:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-02-09 03:00:06,766 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 03:00:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:00:10,286 INFO L225 Difference]: With dead ends: 293357 [2022-02-09 03:00:10,286 INFO L226 Difference]: Without dead ends: 292637 [2022-02-09 03:00:10,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=832, Unknown=0, NotChecked=0, Total=1056 [2022-02-09 03:00:10,288 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 695 mSDsluCounter, 2114 mSDsCounter, 0 mSdLazyCounter, 1776 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-09 03:00:10,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 2128 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1776 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-09 03:00:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292637 states. [2022-02-09 03:00:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292637 to 267346. [2022-02-09 03:00:20,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267346 states, 267345 states have (on average 3.5590005423703452) internal successors, (951481), 267345 states have internal predecessors, (951481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267346 states to 267346 states and 951481 transitions. [2022-02-09 03:00:22,649 INFO L78 Accepts]: Start accepts. Automaton has 267346 states and 951481 transitions. Word has length 75 [2022-02-09 03:00:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:00:22,650 INFO L470 AbstractCegarLoop]: Abstraction has 267346 states and 951481 transitions. [2022-02-09 03:00:22,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 267346 states and 951481 transitions. [2022-02-09 03:00:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 03:00:23,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:00:23,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:00:23,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-09 03:00:23,900 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 03:00:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:00:23,901 INFO L85 PathProgramCache]: Analyzing trace with hash 753120200, now seen corresponding path program 25 times [2022-02-09 03:00:23,901 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:00:23,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257176313] [2022-02-09 03:00:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:00:23,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:00:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:00:24,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:00:24,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:00:24,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257176313] [2022-02-09 03:00:24,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257176313] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:00:24,239 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:00:24,239 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-02-09 03:00:24,239 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487182736] [2022-02-09 03:00:24,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:00:24,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-02-09 03:00:24,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:00:24,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-02-09 03:00:24,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-02-09 03:00:24,240 INFO L87 Difference]: Start difference. First operand 267346 states and 951481 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:00:36,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-09 03:00:36,467 INFO L93 Difference]: Finished difference Result 665830 states and 2364434 transitions. [2022-02-09 03:00:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-09 03:00:36,467 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-02-09 03:00:36,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-09 03:00:41,319 INFO L225 Difference]: With dead ends: 665830 [2022-02-09 03:00:41,319 INFO L226 Difference]: Without dead ends: 662309 [2022-02-09 03:00:41,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=845, Invalid=2461, Unknown=0, NotChecked=0, Total=3306 [2022-02-09 03:00:41,321 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1047 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 3478 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 3575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-09 03:00:41,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1047 Valid, 4799 Invalid, 3575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3478 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-09 03:00:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662309 states. [2022-02-09 03:01:02,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662309 to 380685. [2022-02-09 03:01:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380685 states, 380684 states have (on average 3.5653429090794466) internal successors, (1357269), 380684 states have internal predecessors, (1357269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:01:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380685 states to 380685 states and 1357269 transitions. [2022-02-09 03:01:08,659 INFO L78 Accepts]: Start accepts. Automaton has 380685 states and 1357269 transitions. Word has length 75 [2022-02-09 03:01:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-09 03:01:08,660 INFO L470 AbstractCegarLoop]: Abstraction has 380685 states and 1357269 transitions. [2022-02-09 03:01:08,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 14 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-09 03:01:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 380685 states and 1357269 transitions. [2022-02-09 03:01:11,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-02-09 03:01:11,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-09 03:01:11,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-09 03:01:11,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-09 03:01:11,122 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-02-09 03:01:11,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-09 03:01:11,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1535654792, now seen corresponding path program 26 times [2022-02-09 03:01:11,135 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-09 03:01:11,135 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799310012] [2022-02-09 03:01:11,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-09 03:01:11,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-09 03:01:11,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-09 03:01:11,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-09 03:01:11,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-09 03:01:11,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799310012] [2022-02-09 03:01:11,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799310012] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-09 03:01:11,556 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-09 03:01:11,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-02-09 03:01:11,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855616074] [2022-02-09 03:01:11,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-09 03:01:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-02-09 03:01:11,557 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-09 03:01:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-02-09 03:01:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-02-09 03:01:11,558 INFO L87 Difference]: Start difference. First operand 380685 states and 1357269 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)