/usr/bin/java -Xmx16000000000 -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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 16:26:24,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 16:26:24,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 16:26:24,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 16:26:24,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 16:26:24,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 16:26:24,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 16:26:24,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 16:26:24,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 16:26:24,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 16:26:24,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 16:26:24,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 16:26:24,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 16:26:24,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 16:26:24,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 16:26:24,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 16:26:24,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 16:26:24,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 16:26:24,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 16:26:24,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 16:26:24,684 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-Separate.epf [2022-01-18 16:26:24,717 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 16:26:24,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 16:26:24,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 16:26:24,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 16:26:24,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 16:26:24,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 16:26:24,719 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 16:26:24,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 16:26:24,720 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 16:26:24,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 16:26:24,720 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 16:26:24,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 16:26:24,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 16:26:24,721 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 16:26:24,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 16:26:24,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 16:26:24,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 16:26:24,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 16:26:24,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 16:26:24,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 16:26:24,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 16:26:24,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 16:26:24,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 16:26:24,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 16:26:24,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 16:26:24,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 16:26:24,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 16:26:24,727 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 16:26:24,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 16:26:24,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 16:26:24,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 16:26:24,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 16:26:24,941 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 16:26:24,944 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 16:26:24,945 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2022-01-18 16:26:24,945 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2022-01-18 16:26:24,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 16:26:24,968 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 16:26:24,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 16:26:24,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 16:26:24,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 16:26:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,988 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 16:26:24,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 16:26:24,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 16:26:24,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 16:26:24,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 16:26:24,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:24,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:25,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:25,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:25,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 16:26:25,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 16:26:25,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 16:26:25,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 16:26:25,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/1) ... [2022-01-18 16:26:25,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 16:26:25,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:25,036 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) [2022-01-18 16:26:25,040 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 [2022-01-18 16:26:25,069 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 16:26:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 16:26:25,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 16:26:25,070 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 16:26:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 16:26:25,070 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 16:26:25,070 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 16:26:25,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 16:26:25,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 16:26:25,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 16:26:25,071 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 16:26:25,071 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 16:26:25,072 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 16:26:25,117 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 16:26:25,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 16:26:25,194 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 16:26:25,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 16:26:25,215 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 16:26:25,217 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:26:25 BoogieIcfgContainer [2022-01-18 16:26:25,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 16:26:25,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 16:26:25,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 16:26:25,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 16:26:25,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 04:26:24" (1/2) ... [2022-01-18 16:26:25,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@520ae06 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 04:26:25, skipping insertion in model container [2022-01-18 16:26:25,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 04:26:25" (2/2) ... [2022-01-18 16:26:25,251 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2022-01-18 16:26:25,254 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 16:26:25,254 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 16:26:25,255 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 16:26:25,255 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 16:26:25,304 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 16:26:25,342 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 16:26:25,347 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, 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 [2022-01-18 16:26:25,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 16:26:25,355 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-01-18 16:26:25,387 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 16:26:25,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:25,397 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] [2022-01-18 16:26:25,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -637092992, now seen corresponding path program 1 times [2022-01-18 16:26:25,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:25,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640252831] [2022-01-18 16:26:25,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:25,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:25,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:25,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640252831] [2022-01-18 16:26:25,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640252831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:26:25,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:26:25,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 16:26:25,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938228692] [2022-01-18 16:26:25,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:26:25,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 16:26:25,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:25,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 16:26:25,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 16:26:25,568 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 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 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:25,648 INFO L93 Difference]: Finished difference Result 126 states and 331 transitions. [2022-01-18 16:26:25,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 16:26:25,651 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 16:26:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:25,663 INFO L225 Difference]: With dead ends: 126 [2022-01-18 16:26:25,663 INFO L226 Difference]: Without dead ends: 126 [2022-01-18 16:26:25,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:26:25,668 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:25,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:26:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-18 16:26:25,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-01-18 16:26:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.648) internal successors, (331), 125 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 331 transitions. [2022-01-18 16:26:25,732 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 331 transitions. Word has length 21 [2022-01-18 16:26:25,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:25,732 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 331 transitions. [2022-01-18 16:26:25,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 331 transitions. [2022-01-18 16:26:25,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 16:26:25,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:25,734 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] [2022-01-18 16:26:25,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 16:26:25,735 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:25,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1418210977, now seen corresponding path program 1 times [2022-01-18 16:26:25,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:25,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710650496] [2022-01-18 16:26:25,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:25,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:25,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:25,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:25,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710650496] [2022-01-18 16:26:25,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710650496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:26:25,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:26:25,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 16:26:25,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362457739] [2022-01-18 16:26:25,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:26:25,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 16:26:25,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:25,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 16:26:25,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 16:26:25,786 INFO L87 Difference]: Start difference. First operand 126 states and 331 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:25,820 INFO L93 Difference]: Finished difference Result 176 states and 475 transitions. [2022-01-18 16:26:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 16:26:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 16:26:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:25,823 INFO L225 Difference]: With dead ends: 176 [2022-01-18 16:26:25,823 INFO L226 Difference]: Without dead ends: 176 [2022-01-18 16:26:25,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:26:25,825 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:25,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:26:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-18 16:26:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2022-01-18 16:26:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions. [2022-01-18 16:26:25,847 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 24 [2022-01-18 16:26:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:25,848 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions. [2022-01-18 16:26:25,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,848 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions. [2022-01-18 16:26:25,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 16:26:25,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:25,850 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] [2022-01-18 16:26:25,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 16:26:25,850 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:25,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:25,851 INFO L85 PathProgramCache]: Analyzing trace with hash 365469361, now seen corresponding path program 1 times [2022-01-18 16:26:25,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:25,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638537347] [2022-01-18 16:26:25,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:25,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:25,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:25,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:25,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:25,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638537347] [2022-01-18 16:26:25,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638537347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:26:25,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:26:25,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 16:26:25,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348597875] [2022-01-18 16:26:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:26:25,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 16:26:25,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 16:26:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:26:25,914 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:25,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:25,994 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions. [2022-01-18 16:26:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 16:26:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 16:26:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:26,000 INFO L225 Difference]: With dead ends: 223 [2022-01-18 16:26:26,000 INFO L226 Difference]: Without dead ends: 223 [2022-01-18 16:26:26,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 16:26:26,002 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:26,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 16:26:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-18 16:26:26,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-01-18 16:26:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions. [2022-01-18 16:26:26,027 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26 [2022-01-18 16:26:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:26,027 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions. [2022-01-18 16:26:26,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions. [2022-01-18 16:26:26,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 16:26:26,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:26,029 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] [2022-01-18 16:26:26,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 16:26:26,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash 282875335, now seen corresponding path program 1 times [2022-01-18 16:26:26,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:26,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656829359] [2022-01-18 16:26:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:26,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:26,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 16:26:26,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656829359] [2022-01-18 16:26:26,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656829359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 16:26:26,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 16:26:26,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 16:26:26,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101563630] [2022-01-18 16:26:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 16:26:26,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 16:26:26,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 16:26:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 16:26:26,083 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:26,149 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions. [2022-01-18 16:26:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 16:26:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 16:26:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:26,153 INFO L225 Difference]: With dead ends: 344 [2022-01-18 16:26:26,153 INFO L226 Difference]: Without dead ends: 308 [2022-01-18 16:26:26,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 16:26:26,164 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:26,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 16:26:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-18 16:26:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2022-01-18 16:26:26,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions. [2022-01-18 16:26:26,189 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28 [2022-01-18 16:26:26,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:26,189 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions. [2022-01-18 16:26:26,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:26,189 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions. [2022-01-18 16:26:26,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 16:26:26,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:26,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:26,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 16:26:26,192 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:26,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 290186221, now seen corresponding path program 2 times [2022-01-18 16:26:26,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:26,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183386409] [2022-01-18 16:26:26,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:26,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:26,339 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:26,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183386409] [2022-01-18 16:26:26,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183386409] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:26,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673985000] [2022-01-18 16:26:26,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:26:26,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:26,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:26,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:26,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 16:26:26,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:26:26,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:26,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 16:26:26,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:26,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:27,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673985000] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:27,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:27,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-01-18 16:26:27,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369588626] [2022-01-18 16:26:27,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:27,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 16:26:27,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:27,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 16:26:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-01-18 16:26:27,069 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:27,820 INFO L93 Difference]: Finished difference Result 633 states and 1787 transitions. [2022-01-18 16:26:27,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 16:26:27,821 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2022-01-18 16:26:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:27,825 INFO L225 Difference]: With dead ends: 633 [2022-01-18 16:26:27,825 INFO L226 Difference]: Without dead ends: 633 [2022-01-18 16:26:27,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 16:26:27,827 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:27,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 106 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 16:26:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-01-18 16:26:27,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 316. [2022-01-18 16:26:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.961904761904762) internal successors, (933), 315 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 933 transitions. [2022-01-18 16:26:27,847 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 933 transitions. Word has length 30 [2022-01-18 16:26:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:27,847 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 933 transitions. [2022-01-18 16:26:27,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 933 transitions. [2022-01-18 16:26:27,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 16:26:27,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:27,850 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:27,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:28,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:28,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash 581986797, now seen corresponding path program 3 times [2022-01-18 16:26:28,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940289730] [2022-01-18 16:26:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:28,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:28,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:28,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940289730] [2022-01-18 16:26:28,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940289730] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:28,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598547167] [2022-01-18 16:26:28,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:26:28,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:28,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:28,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:28,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 16:26:28,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:26:28,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:28,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 16:26:28,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:28,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:28,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598547167] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:28,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:28,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 16:26:28,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785774831] [2022-01-18 16:26:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:28,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 16:26:28,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 16:26:28,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 16:26:28,850 INFO L87 Difference]: Start difference. First operand 316 states and 933 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:29,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:29,252 INFO L93 Difference]: Finished difference Result 861 states and 2534 transitions. [2022-01-18 16:26:29,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 16:26:29,252 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 16:26:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:29,258 INFO L225 Difference]: With dead ends: 861 [2022-01-18 16:26:29,259 INFO L226 Difference]: Without dead ends: 861 [2022-01-18 16:26:29,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2022-01-18 16:26:29,260 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 297 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:29,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 107 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 16:26:29,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-01-18 16:26:29,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 588. [2022-01-18 16:26:29,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.06984667802385) internal successors, (1802), 587 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1802 transitions. [2022-01-18 16:26:29,287 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1802 transitions. Word has length 30 [2022-01-18 16:26:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:29,287 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1802 transitions. [2022-01-18 16:26:29,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1802 transitions. [2022-01-18 16:26:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 16:26:29,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:29,297 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:29,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:29,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 16:26:29,517 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:29,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash -101147565, now seen corresponding path program 4 times [2022-01-18 16:26:29,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:29,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884745095] [2022-01-18 16:26:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:29,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:29,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:29,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884745095] [2022-01-18 16:26:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884745095] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:29,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33882328] [2022-01-18 16:26:29,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:26:29,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:29,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:29,650 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:29,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 16:26:29,694 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:26:29,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:29,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 16:26:29,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:29,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:30,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33882328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:30,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:30,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2022-01-18 16:26:30,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673593308] [2022-01-18 16:26:30,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:30,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 16:26:30,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 16:26:30,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-01-18 16:26:30,316 INFO L87 Difference]: Start difference. First operand 588 states and 1802 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:31,183 INFO L93 Difference]: Finished difference Result 975 states and 2760 transitions. [2022-01-18 16:26:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 16:26:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 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 32 [2022-01-18 16:26:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:31,189 INFO L225 Difference]: With dead ends: 975 [2022-01-18 16:26:31,189 INFO L226 Difference]: Without dead ends: 975 [2022-01-18 16:26:31,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:26:31,191 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:31,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 184 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 16:26:31,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-18 16:26:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 710. [2022-01-18 16:26:31,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.011283497884344) internal successors, (2135), 709 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2135 transitions. [2022-01-18 16:26:31,216 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2135 transitions. Word has length 32 [2022-01-18 16:26:31,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:31,217 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2135 transitions. [2022-01-18 16:26:31,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:31,217 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2135 transitions. [2022-01-18 16:26:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 16:26:31,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:31,220 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:31,240 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-18 16:26:31,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:31,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:31,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1192213421, now seen corresponding path program 5 times [2022-01-18 16:26:31,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:31,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489947712] [2022-01-18 16:26:31,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:31,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:31,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:31,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489947712] [2022-01-18 16:26:31,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489947712] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:31,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637207812] [2022-01-18 16:26:31,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:26:31,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:31,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:31,552 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:31,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 16:26:31,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 16:26:31,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:31,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 16:26:31,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:31,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:32,246 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:32,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637207812] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:32,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:32,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2022-01-18 16:26:32,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854180068] [2022-01-18 16:26:32,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:32,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 16:26:32,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:32,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 16:26:32,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-01-18 16:26:32,249 INFO L87 Difference]: Start difference. First operand 710 states and 2135 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:34,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:34,254 INFO L93 Difference]: Finished difference Result 1943 states and 5560 transitions. [2022-01-18 16:26:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 16:26:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 16:26:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:34,264 INFO L225 Difference]: With dead ends: 1943 [2022-01-18 16:26:34,265 INFO L226 Difference]: Without dead ends: 1943 [2022-01-18 16:26:34,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1583, Invalid=5557, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 16:26:34,267 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 278 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:34,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 16:26:34,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-01-18 16:26:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 826. [2022-01-18 16:26:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.0715151515151513) internal successors, (2534), 825 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:34,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2534 transitions. [2022-01-18 16:26:34,302 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2534 transitions. Word has length 32 [2022-01-18 16:26:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:34,302 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2534 transitions. [2022-01-18 16:26:34,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:34,303 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2534 transitions. [2022-01-18 16:26:34,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 16:26:34,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:34,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:34,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:34,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:34,522 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:34,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1582175149, now seen corresponding path program 6 times [2022-01-18 16:26:34,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:34,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739278913] [2022-01-18 16:26:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:34,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:34,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739278913] [2022-01-18 16:26:34,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739278913] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193529193] [2022-01-18 16:26:34,648 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:26:34,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:34,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:34,649 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:34,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 16:26:34,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 16:26:34,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:34,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 16:26:34,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:35,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:35,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193529193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:35,407 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:35,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2022-01-18 16:26:35,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050756402] [2022-01-18 16:26:35,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:35,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 16:26:35,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 16:26:35,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-01-18 16:26:35,409 INFO L87 Difference]: Start difference. First operand 826 states and 2534 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:37,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:37,940 INFO L93 Difference]: Finished difference Result 2939 states and 8774 transitions. [2022-01-18 16:26:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 16:26:37,941 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 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 32 [2022-01-18 16:26:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:37,954 INFO L225 Difference]: With dead ends: 2939 [2022-01-18 16:26:37,954 INFO L226 Difference]: Without dead ends: 2939 [2022-01-18 16:26:37,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2652, Invalid=8060, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 16:26:37,957 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 411 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:37,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 295 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 16:26:37,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-01-18 16:26:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1137. [2022-01-18 16:26:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 3.1778169014084505) internal successors, (3610), 1136 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3610 transitions. [2022-01-18 16:26:38,007 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3610 transitions. Word has length 32 [2022-01-18 16:26:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:38,007 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 3610 transitions. [2022-01-18 16:26:38,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3610 transitions. [2022-01-18 16:26:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 16:26:38,010 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:38,010 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:38,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:38,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:38,223 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:38,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1367115515, now seen corresponding path program 7 times [2022-01-18 16:26:38,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:38,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641133332] [2022-01-18 16:26:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:38,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:38,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:38,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:38,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641133332] [2022-01-18 16:26:38,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641133332] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:38,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835446969] [2022-01-18 16:26:38,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:26:38,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:38,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:38,360 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:38,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 16:26:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:38,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 16:26:38,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:38,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:39,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835446969] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:39,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:39,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-01-18 16:26:39,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519020464] [2022-01-18 16:26:39,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:39,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 16:26:39,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:39,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 16:26:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-01-18 16:26:39,200 INFO L87 Difference]: Start difference. First operand 1137 states and 3610 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:40,762 INFO L93 Difference]: Finished difference Result 4727 states and 14426 transitions. [2022-01-18 16:26:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 16:26:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 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 32 [2022-01-18 16:26:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:40,782 INFO L225 Difference]: With dead ends: 4727 [2022-01-18 16:26:40,782 INFO L226 Difference]: Without dead ends: 4727 [2022-01-18 16:26:40,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=3128, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 16:26:40,784 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:40,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 222 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 16:26:40,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-01-18 16:26:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 2168. [2022-01-18 16:26:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 3.2459621596677435) internal successors, (7034), 2167 states have internal predecessors, (7034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:40,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 7034 transitions. [2022-01-18 16:26:40,860 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 7034 transitions. Word has length 32 [2022-01-18 16:26:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:40,860 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 7034 transitions. [2022-01-18 16:26:40,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:40,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 7034 transitions. [2022-01-18 16:26:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 16:26:40,865 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:40,865 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:40,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:41,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:41,078 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:41,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:41,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1458806875, now seen corresponding path program 8 times [2022-01-18 16:26:41,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:41,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231788721] [2022-01-18 16:26:41,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:41,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 16:26:41,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:41,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231788721] [2022-01-18 16:26:41,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231788721] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:41,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170508505] [2022-01-18 16:26:41,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:26:41,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:41,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:41,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:41,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 16:26:41,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:26:41,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:41,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 16:26:41,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:41,319 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 16:26:41,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:41,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170508505] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:41,758 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:41,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2022-01-18 16:26:41,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976158696] [2022-01-18 16:26:41,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:41,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 16:26:41,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:41,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 16:26:41,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-18 16:26:41,759 INFO L87 Difference]: Start difference. First operand 2168 states and 7034 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:41,877 INFO L93 Difference]: Finished difference Result 2799 states and 8918 transitions. [2022-01-18 16:26:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 16:26:41,878 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 16:26:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:41,889 INFO L225 Difference]: With dead ends: 2799 [2022-01-18 16:26:41,889 INFO L226 Difference]: Without dead ends: 2799 [2022-01-18 16:26:41,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-01-18 16:26:41,890 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 349 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:41,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 16:26:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-01-18 16:26:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2149. [2022-01-18 16:26:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 3.241154562383613) internal successors, (6962), 2148 states have internal predecessors, (6962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 6962 transitions. [2022-01-18 16:26:41,946 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 6962 transitions. Word has length 32 [2022-01-18 16:26:41,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:41,946 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 6962 transitions. [2022-01-18 16:26:41,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 6962 transitions. [2022-01-18 16:26:41,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:26:41,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:41,951 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:41,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-18 16:26:42,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:42,165 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:42,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 412803505, now seen corresponding path program 9 times [2022-01-18 16:26:42,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:42,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107340985] [2022-01-18 16:26:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:42,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:42,513 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:26:42,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:42,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107340985] [2022-01-18 16:26:42,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107340985] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:42,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356359344] [2022-01-18 16:26:42,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:26:42,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:42,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:42,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:42,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 16:26:42,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:26:42,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:42,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 16:26:42,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:43,466 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:43,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:26:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:45,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356359344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:26:45,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:26:45,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 16:26:45,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98313376] [2022-01-18 16:26:45,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:26:45,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:26:45,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:26:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:26:45,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:26:45,204 INFO L87 Difference]: Start difference. First operand 2149 states and 6962 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:57,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:26:57,214 INFO L93 Difference]: Finished difference Result 7861 states and 24237 transitions. [2022-01-18 16:26:57,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-18 16:26:57,214 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:26:57,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:26:57,239 INFO L225 Difference]: With dead ends: 7861 [2022-01-18 16:26:57,239 INFO L226 Difference]: Without dead ends: 7696 [2022-01-18 16:26:57,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4125, Invalid=23597, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 16:26:57,245 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 828 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:26:57,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 505 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 16:26:57,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2022-01-18 16:26:57,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 2969. [2022-01-18 16:26:57,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 3.253369272237197) internal successors, (9656), 2968 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:57,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 9656 transitions. [2022-01-18 16:26:57,364 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 9656 transitions. Word has length 34 [2022-01-18 16:26:57,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:26:57,364 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 9656 transitions. [2022-01-18 16:26:57,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:26:57,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 9656 transitions. [2022-01-18 16:26:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:26:57,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:26:57,371 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:26:57,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 16:26:57,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 16:26:57,587 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:26:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:26:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 971839921, now seen corresponding path program 10 times [2022-01-18 16:26:57,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:26:57,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51947077] [2022-01-18 16:26:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:26:57,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:26:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:26:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:57,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:26:57,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51947077] [2022-01-18 16:26:57,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51947077] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:26:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636144445] [2022-01-18 16:26:57,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:26:57,924 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:26:57,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:26:57,925 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:26:57,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 16:26:57,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:26:57,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:26:57,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 16:26:57,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:26:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:26:58,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:27:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:00,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636144445] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:27:00,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:27:00,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 16:27:00,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092991499] [2022-01-18 16:27:00,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:27:00,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:27:00,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:27:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:27:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:27:00,068 INFO L87 Difference]: Start difference. First operand 2969 states and 9656 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:27:15,326 INFO L93 Difference]: Finished difference Result 10912 states and 33148 transitions. [2022-01-18 16:27:15,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-01-18 16:27:15,326 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:27:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:27:15,357 INFO L225 Difference]: With dead ends: 10912 [2022-01-18 16:27:15,357 INFO L226 Difference]: Without dead ends: 10686 [2022-01-18 16:27:15,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21166 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=9279, Invalid=42477, Unknown=0, NotChecked=0, Total=51756 [2022-01-18 16:27:15,363 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1151 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 16:27:15,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 698 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 16:27:15,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2022-01-18 16:27:15,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 3913. [2022-01-18 16:27:15,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 3.280930470347648) internal successors, (12835), 3912 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 12835 transitions. [2022-01-18 16:27:15,523 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 12835 transitions. Word has length 34 [2022-01-18 16:27:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:27:15,524 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 12835 transitions. [2022-01-18 16:27:15,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 12835 transitions. [2022-01-18 16:27:15,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:27:15,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:27:15,534 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:27:15,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 16:27:15,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 16:27:15,747 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:27:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:27:15,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1964333485, now seen corresponding path program 11 times [2022-01-18 16:27:15,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:27:15,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894962436] [2022-01-18 16:27:15,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:27:15,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:27:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:27:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:16,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:27:16,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894962436] [2022-01-18 16:27:16,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894962436] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:27:16,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663682181] [2022-01-18 16:27:16,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:27:16,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:27:16,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:27:16,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:27:16,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 16:27:16,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:27:16,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:27:16,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 16:27:16,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:27:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:17,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:27:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:18,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663682181] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:27:18,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:27:18,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 16:27:18,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360824081] [2022-01-18 16:27:18,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:27:18,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:27:18,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:27:18,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:27:18,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:27:18,095 INFO L87 Difference]: Start difference. First operand 3913 states and 12835 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:31,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:27:31,886 INFO L93 Difference]: Finished difference Result 11044 states and 33819 transitions. [2022-01-18 16:27:31,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 16:27:31,887 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:27:31,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:27:31,935 INFO L225 Difference]: With dead ends: 11044 [2022-01-18 16:27:31,936 INFO L226 Difference]: Without dead ends: 10842 [2022-01-18 16:27:31,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25049 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=10854, Invalid=48438, Unknown=0, NotChecked=0, Total=59292 [2022-01-18 16:27:31,940 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1206 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:27:31,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 686 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 16:27:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2022-01-18 16:27:32,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 4299. [2022-01-18 16:27:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 3.3187529083294556) internal successors, (14264), 4298 states have internal predecessors, (14264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 14264 transitions. [2022-01-18 16:27:32,095 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 14264 transitions. Word has length 34 [2022-01-18 16:27:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:27:32,095 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 14264 transitions. [2022-01-18 16:27:32,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 14264 transitions. [2022-01-18 16:27:32,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:27:32,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:27:32,106 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:27:32,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 16:27:32,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-18 16:27:32,323 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:27:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:27:32,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1613065811, now seen corresponding path program 12 times [2022-01-18 16:27:32,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:27:32,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845844907] [2022-01-18 16:27:32,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:27:32,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:27:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:27:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:32,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:27:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845844907] [2022-01-18 16:27:32,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845844907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:27:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714221802] [2022-01-18 16:27:32,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:27:32,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:27:32,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:27:32,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:27:32,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 16:27:32,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 16:27:32,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:27:32,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 16:27:32,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:27:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:33,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:27:34,744 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:34,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714221802] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:27:34,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:27:34,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 48 [2022-01-18 16:27:34,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642249275] [2022-01-18 16:27:34,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:27:34,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 16:27:34,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:27:34,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 16:27:34,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 16:27:34,746 INFO L87 Difference]: Start difference. First operand 4299 states and 14264 transitions. Second operand has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:48,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:27:48,223 INFO L93 Difference]: Finished difference Result 10733 states and 33404 transitions. [2022-01-18 16:27:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-01-18 16:27:48,224 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:27:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:27:48,240 INFO L225 Difference]: With dead ends: 10733 [2022-01-18 16:27:48,240 INFO L226 Difference]: Without dead ends: 10515 [2022-01-18 16:27:48,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20891 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=9352, Invalid=41498, Unknown=0, NotChecked=0, Total=50850 [2022-01-18 16:27:48,244 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1236 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:27:48,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 745 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 16:27:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-01-18 16:27:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 3833. [2022-01-18 16:27:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 3.2917536534446765) internal successors, (12614), 3832 states have internal predecessors, (12614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 12614 transitions. [2022-01-18 16:27:48,376 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 12614 transitions. Word has length 34 [2022-01-18 16:27:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:27:48,376 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 12614 transitions. [2022-01-18 16:27:48,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:27:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 12614 transitions. [2022-01-18 16:27:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:27:48,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:27:48,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:27:48,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 16:27:48,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 16:27:48,606 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:27:48,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:27:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1621951143, now seen corresponding path program 13 times [2022-01-18 16:27:48,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:27:48,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730219040] [2022-01-18 16:27:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:27:48,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:27:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:27:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:48,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:27:48,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730219040] [2022-01-18 16:27:48,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730219040] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:27:48,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738207402] [2022-01-18 16:27:48,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:27:48,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:27:48,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:27:48,895 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:27:48,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 16:27:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:27:48,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 16:27:48,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:27:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:49,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:27:52,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:27:52,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738207402] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:27:52,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:27:52,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2022-01-18 16:27:52,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839834242] [2022-01-18 16:27:52,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:27:52,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 16:27:52,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:27:52,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 16:27:52,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 16:27:52,071 INFO L87 Difference]: Start difference. First operand 3833 states and 12614 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:05,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:28:05,767 INFO L93 Difference]: Finished difference Result 10462 states and 32329 transitions. [2022-01-18 16:28:05,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 16:28:05,767 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:28:05,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:28:05,788 INFO L225 Difference]: With dead ends: 10462 [2022-01-18 16:28:05,789 INFO L226 Difference]: Without dead ends: 10307 [2022-01-18 16:28:05,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7919 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=3778, Invalid=17978, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 16:28:05,790 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 682 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 16:28:05,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 598 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 16:28:05,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2022-01-18 16:28:05,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 4521. [2022-01-18 16:28:05,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 3.308628318584071) internal successors, (14955), 4520 states have internal predecessors, (14955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:05,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 14955 transitions. [2022-01-18 16:28:05,939 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 14955 transitions. Word has length 34 [2022-01-18 16:28:05,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:28:05,939 INFO L470 AbstractCegarLoop]: Abstraction has 4521 states and 14955 transitions. [2022-01-18 16:28:05,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:05,940 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 14955 transitions. [2022-01-18 16:28:05,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:28:05,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:28:05,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:28:05,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-01-18 16:28:06,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 16:28:06,149 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:28:06,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:28:06,149 INFO L85 PathProgramCache]: Analyzing trace with hash 596520025, now seen corresponding path program 14 times [2022-01-18 16:28:06,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:28:06,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212851908] [2022-01-18 16:28:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:28:06,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:28:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:28:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:06,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:28:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212851908] [2022-01-18 16:28:06,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212851908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:28:06,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943762116] [2022-01-18 16:28:06,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:28:06,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:06,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:28:06,456 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:28:06,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 16:28:06,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:28:06,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:28:06,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 16:28:06,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:28:07,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:07,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:28:08,824 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:08,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943762116] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:28:08,825 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:28:08,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 47 [2022-01-18 16:28:08,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238949743] [2022-01-18 16:28:08,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:28:08,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 16:28:08,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:28:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 16:28:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1896, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 16:28:08,826 INFO L87 Difference]: Start difference. First operand 4521 states and 14955 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:28:24,905 INFO L93 Difference]: Finished difference Result 11942 states and 37849 transitions. [2022-01-18 16:28:24,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-01-18 16:28:24,905 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:28:24,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:28:24,947 INFO L225 Difference]: With dead ends: 11942 [2022-01-18 16:28:24,947 INFO L226 Difference]: Without dead ends: 11777 [2022-01-18 16:28:24,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20629 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=7611, Invalid=44145, Unknown=0, NotChecked=0, Total=51756 [2022-01-18 16:28:24,949 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 865 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 16:28:24,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 570 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 16:28:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2022-01-18 16:28:25,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 4932. [2022-01-18 16:28:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.3050091259379437) internal successors, (16297), 4931 states have internal predecessors, (16297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16297 transitions. [2022-01-18 16:28:25,113 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16297 transitions. Word has length 34 [2022-01-18 16:28:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:28:25,113 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16297 transitions. [2022-01-18 16:28:25,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16297 transitions. [2022-01-18 16:28:25,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:28:25,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:28:25,124 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:28:25,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 16:28:25,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 16:28:25,335 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:28:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:28:25,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1798267431, now seen corresponding path program 15 times [2022-01-18 16:28:25,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:28:25,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137112111] [2022-01-18 16:28:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:28:25,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:28:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:28:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:25,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:28:25,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137112111] [2022-01-18 16:28:25,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137112111] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:28:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668352431] [2022-01-18 16:28:25,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:28:25,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:28:25,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:28:25,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 16:28:25,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:28:25,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:28:25,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 16:28:25,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:28:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:26,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:28:27,906 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:27,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668352431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:28:27,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:28:27,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 16:28:27,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397933357] [2022-01-18 16:28:27,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:28:27,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:28:27,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:28:27,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:28:27,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:28:27,907 INFO L87 Difference]: Start difference. First operand 4932 states and 16297 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:42,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:28:42,947 INFO L93 Difference]: Finished difference Result 16468 states and 52786 transitions. [2022-01-18 16:28:42,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-01-18 16:28:42,947 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:28:42,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:28:42,988 INFO L225 Difference]: With dead ends: 16468 [2022-01-18 16:28:42,988 INFO L226 Difference]: Without dead ends: 16303 [2022-01-18 16:28:42,990 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14557 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=7548, Invalid=32652, Unknown=0, NotChecked=0, Total=40200 [2022-01-18 16:28:42,991 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 764 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:28:42,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 510 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 4307 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 16:28:43,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2022-01-18 16:28:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 6713. [2022-01-18 16:28:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 6712 states have (on average 3.362485101311085) internal successors, (22569), 6712 states have internal predecessors, (22569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 22569 transitions. [2022-01-18 16:28:43,192 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 22569 transitions. Word has length 34 [2022-01-18 16:28:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:28:43,192 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 22569 transitions. [2022-01-18 16:28:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 22569 transitions. [2022-01-18 16:28:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:28:43,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:28:43,207 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:28:43,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-18 16:28:43,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:43,429 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:28:43,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:28:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash 342899377, now seen corresponding path program 16 times [2022-01-18 16:28:43,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:28:43,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60438139] [2022-01-18 16:28:43,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:28:43,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:28:43,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:28:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:43,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:28:43,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60438139] [2022-01-18 16:28:43,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60438139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:28:43,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856568303] [2022-01-18 16:28:43,718 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:28:43,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:28:43,719 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:28:43,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 16:28:43,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:28:43,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:28:43,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:28:43,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:28:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:44,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:28:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:47,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856568303] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:28:47,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:28:47,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:28:47,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291531410] [2022-01-18 16:28:47,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:28:47,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:28:47,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:28:47,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:28:47,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:28:47,328 INFO L87 Difference]: Start difference. First operand 6713 states and 22569 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:28:53,336 INFO L93 Difference]: Finished difference Result 12518 states and 40141 transitions. [2022-01-18 16:28:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 16:28:53,336 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:28:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:28:53,363 INFO L225 Difference]: With dead ends: 12518 [2022-01-18 16:28:53,363 INFO L226 Difference]: Without dead ends: 12273 [2022-01-18 16:28:53,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1649, Invalid=7471, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 16:28:53,364 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 560 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 16:28:53,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 451 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 16:28:53,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-01-18 16:28:53,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 6834. [2022-01-18 16:28:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 3.3647007171081516) internal successors, (22991), 6833 states have internal predecessors, (22991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 22991 transitions. [2022-01-18 16:28:53,555 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 22991 transitions. Word has length 34 [2022-01-18 16:28:53,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:28:53,555 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 22991 transitions. [2022-01-18 16:28:53,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:28:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 22991 transitions. [2022-01-18 16:28:53,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:28:53,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:28:53,570 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:28:53,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 16:28:53,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:53,783 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:28:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:28:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601517, now seen corresponding path program 17 times [2022-01-18 16:28:53,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:28:53,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285699498] [2022-01-18 16:28:53,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:28:53,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:28:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:28:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:54,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:28:54,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285699498] [2022-01-18 16:28:54,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285699498] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:28:54,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306492963] [2022-01-18 16:28:54,048 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:28:54,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:28:54,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:28:54,049 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:28:54,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 16:28:54,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:28:54,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:28:54,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:28:54,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:28:54,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:54,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:28:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:28:57,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306492963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:28:57,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:28:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:28:57,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886939248] [2022-01-18 16:28:57,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:28:57,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:28:57,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:28:57,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:28:57,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:28:57,638 INFO L87 Difference]: Start difference. First operand 6834 states and 22991 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:29:05,205 INFO L93 Difference]: Finished difference Result 14485 states and 46677 transitions. [2022-01-18 16:29:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 16:29:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:29:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:29:05,230 INFO L225 Difference]: With dead ends: 14485 [2022-01-18 16:29:05,230 INFO L226 Difference]: Without dead ends: 14245 [2022-01-18 16:29:05,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2257, Invalid=9733, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 16:29:05,231 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 602 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:29:05,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 394 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 16:29:05,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-01-18 16:29:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 6800. [2022-01-18 16:29:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 3.3582879835269894) internal successors, (22833), 6799 states have internal predecessors, (22833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 22833 transitions. [2022-01-18 16:29:05,423 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 22833 transitions. Word has length 34 [2022-01-18 16:29:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:29:05,423 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 22833 transitions. [2022-01-18 16:29:05,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 22833 transitions. [2022-01-18 16:29:05,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:29:05,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:29:05,438 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:29:05,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 16:29:05,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:05,651 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:29:05,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:29:05,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1194491481, now seen corresponding path program 18 times [2022-01-18 16:29:05,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:29:05,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662008197] [2022-01-18 16:29:05,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:29:05,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:29:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:29:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:05,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:29:05,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662008197] [2022-01-18 16:29:05,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662008197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:29:05,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003602745] [2022-01-18 16:29:05,902 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:29:05,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:05,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:29:05,903 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:29:05,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 16:29:05,924 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 16:29:05,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:29:05,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:29:05,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:29:06,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:06,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:29:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:09,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003602745] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:29:09,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:29:09,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:29:09,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761774876] [2022-01-18 16:29:09,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:29:09,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:29:09,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:29:09,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:29:09,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:29:09,557 INFO L87 Difference]: Start difference. First operand 6800 states and 22833 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:16,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:29:16,469 INFO L93 Difference]: Finished difference Result 11835 states and 38385 transitions. [2022-01-18 16:29:16,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 16:29:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:29:16,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:29:16,497 INFO L225 Difference]: With dead ends: 11835 [2022-01-18 16:29:16,497 INFO L226 Difference]: Without dead ends: 11595 [2022-01-18 16:29:16,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 16:29:16,498 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 544 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:29:16,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 246 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 16:29:16,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-01-18 16:29:16,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 6779. [2022-01-18 16:29:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.357627618766598) internal successors, (22758), 6778 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 22758 transitions. [2022-01-18 16:29:16,695 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 22758 transitions. Word has length 34 [2022-01-18 16:29:16,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:29:16,695 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 22758 transitions. [2022-01-18 16:29:16,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:16,695 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 22758 transitions. [2022-01-18 16:29:16,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:29:16,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:29:16,707 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:29:16,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 16:29:16,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:16,909 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:29:16,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:29:16,909 INFO L85 PathProgramCache]: Analyzing trace with hash 188911329, now seen corresponding path program 19 times [2022-01-18 16:29:16,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:29:16,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935727714] [2022-01-18 16:29:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:29:16,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:29:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:29:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:17,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:29:17,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935727714] [2022-01-18 16:29:17,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935727714] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:29:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621596008] [2022-01-18 16:29:17,196 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:29:17,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:17,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:29:17,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:29:17,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 16:29:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:29:17,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:29:17,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:29:18,047 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:18,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:29:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:20,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621596008] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:29:20,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:29:20,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:29:20,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047657055] [2022-01-18 16:29:20,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:29:20,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:29:20,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:29:20,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:29:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:29:20,987 INFO L87 Difference]: Start difference. First operand 6779 states and 22758 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:29:27,080 INFO L93 Difference]: Finished difference Result 11575 states and 37220 transitions. [2022-01-18 16:29:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 16:29:27,081 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:29:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:29:27,102 INFO L225 Difference]: With dead ends: 11575 [2022-01-18 16:29:27,102 INFO L226 Difference]: Without dead ends: 11436 [2022-01-18 16:29:27,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=1849, Invalid=7463, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 16:29:27,103 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 767 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:29:27,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 435 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 16:29:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-01-18 16:29:27,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6931. [2022-01-18 16:29:27,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 3.3593073593073592) internal successors, (23280), 6930 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:27,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 23280 transitions. [2022-01-18 16:29:27,245 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 23280 transitions. Word has length 34 [2022-01-18 16:29:27,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:29:27,245 INFO L470 AbstractCegarLoop]: Abstraction has 6931 states and 23280 transitions. [2022-01-18 16:29:27,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 23280 transitions. [2022-01-18 16:29:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:29:27,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:29:27,258 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:29:27,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 16:29:27,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:27,458 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:29:27,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:29:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1337834849, now seen corresponding path program 20 times [2022-01-18 16:29:27,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:29:27,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988127721] [2022-01-18 16:29:27,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:29:27,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:29:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:29:27,738 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:27,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:29:27,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988127721] [2022-01-18 16:29:27,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988127721] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:29:27,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923283618] [2022-01-18 16:29:27,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:29:27,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:27,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:29:27,739 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:29:27,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 16:29:27,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:29:27,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:29:27,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:29:27,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:29:28,570 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:28,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:29:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:31,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923283618] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:29:31,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:29:31,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:29:31,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259576167] [2022-01-18 16:29:31,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:29:31,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:29:31,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:29:31,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:29:31,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:29:31,428 INFO L87 Difference]: Start difference. First operand 6931 states and 23280 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:39,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:29:39,545 INFO L93 Difference]: Finished difference Result 13668 states and 44628 transitions. [2022-01-18 16:29:39,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 16:29:39,545 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:29:39,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:29:39,570 INFO L225 Difference]: With dead ends: 13668 [2022-01-18 16:29:39,571 INFO L226 Difference]: Without dead ends: 13441 [2022-01-18 16:29:39,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2406, Invalid=11636, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 16:29:39,572 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:29:39,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 368 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 16:29:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-01-18 16:29:39,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 6968. [2022-01-18 16:29:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 3.3585474379216307) internal successors, (23399), 6967 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 23399 transitions. [2022-01-18 16:29:39,712 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 23399 transitions. Word has length 34 [2022-01-18 16:29:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:29:39,712 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 23399 transitions. [2022-01-18 16:29:39,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 23399 transitions. [2022-01-18 16:29:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:29:39,722 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:29:39,722 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:29:39,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 16:29:39,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:39,931 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:29:39,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:29:39,931 INFO L85 PathProgramCache]: Analyzing trace with hash -982878999, now seen corresponding path program 21 times [2022-01-18 16:29:39,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:29:39,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912793276] [2022-01-18 16:29:39,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:29:39,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:29:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:29:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:40,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:29:40,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912793276] [2022-01-18 16:29:40,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912793276] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:29:40,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733438401] [2022-01-18 16:29:40,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:29:40,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:29:40,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:29:40,279 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:29:40,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 16:29:40,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:29:40,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:29:40,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 16:29:40,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:29:41,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:41,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:29:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:29:42,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733438401] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:29:42,463 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:29:42,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 16:29:42,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447204928] [2022-01-18 16:29:42,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:29:42,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:29:42,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:29:42,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:29:42,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:29:42,464 INFO L87 Difference]: Start difference. First operand 6968 states and 23399 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:59,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:29:59,493 INFO L93 Difference]: Finished difference Result 20771 states and 67025 transitions. [2022-01-18 16:29:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-01-18 16:29:59,493 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:29:59,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:29:59,533 INFO L225 Difference]: With dead ends: 20771 [2022-01-18 16:29:59,533 INFO L226 Difference]: Without dead ends: 20597 [2022-01-18 16:29:59,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17435 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=8467, Invalid=37543, Unknown=0, NotChecked=0, Total=46010 [2022-01-18 16:29:59,536 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 916 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:29:59,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 589 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 16:29:59,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2022-01-18 16:29:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 8044. [2022-01-18 16:29:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8043 states have (on average 3.3851796593310954) internal successors, (27227), 8043 states have internal predecessors, (27227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:59,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 27227 transitions. [2022-01-18 16:29:59,770 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 27227 transitions. Word has length 34 [2022-01-18 16:29:59,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:29:59,770 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 27227 transitions. [2022-01-18 16:29:59,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:29:59,770 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 27227 transitions. [2022-01-18 16:29:59,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:29:59,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:29:59,782 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:29:59,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 16:29:59,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 16:30:00,012 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:30:00,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:30:00,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1158287809, now seen corresponding path program 22 times [2022-01-18 16:30:00,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:30:00,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521476741] [2022-01-18 16:30:00,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:30:00,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:30:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:00,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:30:00,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521476741] [2022-01-18 16:30:00,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521476741] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:30:00,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443185635] [2022-01-18 16:30:00,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:30:00,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:30:00,271 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:30:00,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 16:30:00,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:30:00,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:30:00,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:30:00,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:30:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:01,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:30:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:03,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443185635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:30:03,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:30:03,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:30:03,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129347074] [2022-01-18 16:30:03,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:30:03,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:30:03,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:30:03,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:30:03,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:30:03,731 INFO L87 Difference]: Start difference. First operand 8044 states and 27227 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:30:13,393 INFO L93 Difference]: Finished difference Result 17291 states and 55744 transitions. [2022-01-18 16:30:13,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 16:30:13,393 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:30:13,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:30:13,424 INFO L225 Difference]: With dead ends: 17291 [2022-01-18 16:30:13,424 INFO L226 Difference]: Without dead ends: 17083 [2022-01-18 16:30:13,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=2857, Invalid=13913, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 16:30:13,425 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 664 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 16:30:13,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 422 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 16:30:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2022-01-18 16:30:13,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 8543. [2022-01-18 16:30:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 8542 states have (on average 3.403418403184266) internal successors, (29072), 8542 states have internal predecessors, (29072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 29072 transitions. [2022-01-18 16:30:13,631 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 29072 transitions. Word has length 34 [2022-01-18 16:30:13,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:30:13,631 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 29072 transitions. [2022-01-18 16:30:13,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 29072 transitions. [2022-01-18 16:30:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:30:13,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:30:13,643 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:30:13,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 16:30:13,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 16:30:13,844 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:30:13,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:30:13,844 INFO L85 PathProgramCache]: Analyzing trace with hash 2079989949, now seen corresponding path program 23 times [2022-01-18 16:30:13,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:30:13,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423337450] [2022-01-18 16:30:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:30:13,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:30:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:14,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:14,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:30:14,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423337450] [2022-01-18 16:30:14,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423337450] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:30:14,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731795112] [2022-01-18 16:30:14,091 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:30:14,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:30:14,092 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:30:14,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 16:30:14,120 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:30:14,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:30:14,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:30:14,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:30:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:14,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:30:17,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:17,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731795112] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:30:17,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:30:17,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:30:17,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133930094] [2022-01-18 16:30:17,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:30:17,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:30:17,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:30:17,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:30:17,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:30:17,497 INFO L87 Difference]: Start difference. First operand 8543 states and 29072 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:27,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:30:27,667 INFO L93 Difference]: Finished difference Result 18582 states and 60299 transitions. [2022-01-18 16:30:27,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 16:30:27,667 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:30:27,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:30:27,701 INFO L225 Difference]: With dead ends: 18582 [2022-01-18 16:30:27,701 INFO L226 Difference]: Without dead ends: 18404 [2022-01-18 16:30:27,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3342, Invalid=15290, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 16:30:27,702 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 689 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:30:27,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 360 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 16:30:27,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-01-18 16:30:27,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 8453. [2022-01-18 16:30:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8453 states, 8452 states have (on average 3.3917415996213913) internal successors, (28667), 8452 states have internal predecessors, (28667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:27,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8453 states to 8453 states and 28667 transitions. [2022-01-18 16:30:27,909 INFO L78 Accepts]: Start accepts. Automaton has 8453 states and 28667 transitions. Word has length 34 [2022-01-18 16:30:27,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:30:27,909 INFO L470 AbstractCegarLoop]: Abstraction has 8453 states and 28667 transitions. [2022-01-18 16:30:27,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:27,909 INFO L276 IsEmpty]: Start isEmpty. Operand 8453 states and 28667 transitions. [2022-01-18 16:30:27,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:30:27,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:30:27,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:30:27,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 16:30:28,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 16:30:28,127 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:30:28,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:30:28,127 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879913, now seen corresponding path program 24 times [2022-01-18 16:30:28,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:30:28,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679599938] [2022-01-18 16:30:28,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:30:28,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:30:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:28,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:30:28,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679599938] [2022-01-18 16:30:28,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679599938] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:30:28,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868020912] [2022-01-18 16:30:28,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:30:28,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:30:28,377 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:30:28,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 16:30:28,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 16:30:28,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:30:28,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:30:28,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:30:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:29,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:30:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:31,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868020912] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:30:31,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:30:31,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:30:31,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066935768] [2022-01-18 16:30:31,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:30:31,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:30:31,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:30:31,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:30:31,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:30:31,707 INFO L87 Difference]: Start difference. First operand 8453 states and 28667 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:30:38,514 INFO L93 Difference]: Finished difference Result 15036 states and 49177 transitions. [2022-01-18 16:30:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 16:30:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:30:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:30:38,544 INFO L225 Difference]: With dead ends: 15036 [2022-01-18 16:30:38,544 INFO L226 Difference]: Without dead ends: 14858 [2022-01-18 16:30:38,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1795, Invalid=8305, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 16:30:38,545 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 565 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:30:38,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 249 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 16:30:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-01-18 16:30:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 8423. [2022-01-18 16:30:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 3.392780812158632) internal successors, (28574), 8422 states have internal predecessors, (28574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28574 transitions. [2022-01-18 16:30:38,744 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28574 transitions. Word has length 34 [2022-01-18 16:30:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:30:38,744 INFO L470 AbstractCegarLoop]: Abstraction has 8423 states and 28574 transitions. [2022-01-18 16:30:38,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28574 transitions. [2022-01-18 16:30:38,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:30:38,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:30:38,759 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:30:38,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 16:30:38,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:38,966 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:30:38,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:30:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983591, now seen corresponding path program 25 times [2022-01-18 16:30:38,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:30:38,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779359771] [2022-01-18 16:30:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:30:38,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:30:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:39,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:30:39,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779359771] [2022-01-18 16:30:39,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779359771] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:30:39,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719593477] [2022-01-18 16:30:39,261 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:30:39,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:39,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:30:39,265 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:30:39,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 16:30:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:39,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 16:30:39,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:30:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:40,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:30:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:42,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719593477] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:30:42,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:30:42,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-01-18 16:30:42,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933216748] [2022-01-18 16:30:42,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:30:42,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 16:30:42,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:30:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 16:30:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2072, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 16:30:42,361 INFO L87 Difference]: Start difference. First operand 8423 states and 28574 transitions. Second operand has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:30:54,372 INFO L93 Difference]: Finished difference Result 15516 states and 50211 transitions. [2022-01-18 16:30:54,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 16:30:54,372 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:30:54,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:30:54,400 INFO L225 Difference]: With dead ends: 15516 [2022-01-18 16:30:54,400 INFO L226 Difference]: Without dead ends: 15379 [2022-01-18 16:30:54,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9536 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=5079, Invalid=22311, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 16:30:54,401 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 751 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 16:30:54,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 545 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 16:30:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15379 states. [2022-01-18 16:30:54,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15379 to 8748. [2022-01-18 16:30:54,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 3.406082085286384) internal successors, (29793), 8747 states have internal predecessors, (29793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 29793 transitions. [2022-01-18 16:30:54,610 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 29793 transitions. Word has length 34 [2022-01-18 16:30:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:30:54,610 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 29793 transitions. [2022-01-18 16:30:54,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:30:54,611 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 29793 transitions. [2022-01-18 16:30:54,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:30:54,627 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:30:54,627 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:30:54,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 16:30:54,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 16:30:54,848 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:30:54,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:30:54,848 INFO L85 PathProgramCache]: Analyzing trace with hash -472964259, now seen corresponding path program 26 times [2022-01-18 16:30:54,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:30:54,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870491974] [2022-01-18 16:30:54,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:30:54,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:30:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:30:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:55,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:30:55,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870491974] [2022-01-18 16:30:55,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870491974] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:30:55,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755924125] [2022-01-18 16:30:55,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:30:55,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:30:55,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:30:55,152 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:30:55,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 16:30:55,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:30:55,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:30:55,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 16:30:55,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:30:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:55,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:30:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:30:58,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755924125] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:30:58,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:30:58,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 16:30:58,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753370994] [2022-01-18 16:30:58,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:30:58,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:30:58,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:30:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:30:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:30:58,071 INFO L87 Difference]: Start difference. First operand 8748 states and 29793 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:15,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:31:15,535 INFO L93 Difference]: Finished difference Result 16682 states and 54028 transitions. [2022-01-18 16:31:15,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-01-18 16:31:15,535 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:31:15,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:31:15,565 INFO L225 Difference]: With dead ends: 16682 [2022-01-18 16:31:15,565 INFO L226 Difference]: Without dead ends: 16535 [2022-01-18 16:31:15,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=7846, Invalid=38594, Unknown=0, NotChecked=0, Total=46440 [2022-01-18 16:31:15,568 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 921 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:31:15,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 619 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 16:31:15,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16535 states. [2022-01-18 16:31:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16535 to 8674. [2022-01-18 16:31:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 3.401937046004843) internal successors, (29505), 8673 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 29505 transitions. [2022-01-18 16:31:15,823 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 29505 transitions. Word has length 34 [2022-01-18 16:31:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:31:15,823 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 29505 transitions. [2022-01-18 16:31:15,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 29505 transitions. [2022-01-18 16:31:15,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:31:15,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:31:15,836 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:31:15,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 16:31:16,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 16:31:16,037 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:31:16,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:31:16,037 INFO L85 PathProgramCache]: Analyzing trace with hash 445215345, now seen corresponding path program 27 times [2022-01-18 16:31:16,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:31:16,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953150152] [2022-01-18 16:31:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:31:16,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:31:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:31:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:16,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:31:16,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953150152] [2022-01-18 16:31:16,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953150152] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:31:16,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597416024] [2022-01-18 16:31:16,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:31:16,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:31:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:31:16,326 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:31:16,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 16:31:16,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:31:16,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:31:16,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:31:16,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:31:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:17,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:31:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:20,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597416024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:31:20,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:31:20,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:31:20,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11995034] [2022-01-18 16:31:20,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:31:20,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:31:20,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:31:20,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:31:20,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:31:20,046 INFO L87 Difference]: Start difference. First operand 8674 states and 29505 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:32,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:31:32,927 INFO L93 Difference]: Finished difference Result 27617 states and 90885 transitions. [2022-01-18 16:31:32,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-18 16:31:32,928 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:31:32,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:31:32,986 INFO L225 Difference]: With dead ends: 27617 [2022-01-18 16:31:32,986 INFO L226 Difference]: Without dead ends: 27408 [2022-01-18 16:31:32,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8172 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=4436, Invalid=19744, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 16:31:32,988 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 700 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 16:31:32,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 582 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 16:31:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-01-18 16:31:33,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 12080. [2022-01-18 16:31:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 3.4684990479344315) internal successors, (41896), 12079 states have internal predecessors, (41896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 41896 transitions. [2022-01-18 16:31:33,367 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 41896 transitions. Word has length 34 [2022-01-18 16:31:33,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:31:33,367 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 41896 transitions. [2022-01-18 16:31:33,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 41896 transitions. [2022-01-18 16:31:33,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:31:33,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:31:33,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:31:33,399 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 16:31:33,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:31:33,585 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:31:33,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:31:33,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1498004759, now seen corresponding path program 28 times [2022-01-18 16:31:33,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:31:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943865983] [2022-01-18 16:31:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:31:33,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:31:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:31:33,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:33,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:31:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943865983] [2022-01-18 16:31:33,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943865983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:31:33,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699914721] [2022-01-18 16:31:33,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:31:33,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:31:33,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:31:33,878 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:31:33,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 16:31:33,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:31:33,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:31:33,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:31:33,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:31:34,703 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:34,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:31:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:37,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699914721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:31:37,483 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:31:37,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:31:37,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176206967] [2022-01-18 16:31:37,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:31:37,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:31:37,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:31:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:31:37,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:31:37,484 INFO L87 Difference]: Start difference. First operand 12080 states and 41896 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:31:45,217 INFO L93 Difference]: Finished difference Result 26957 states and 90433 transitions. [2022-01-18 16:31:45,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 16:31:45,217 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:31:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:31:45,276 INFO L225 Difference]: With dead ends: 26957 [2022-01-18 16:31:45,277 INFO L226 Difference]: Without dead ends: 26819 [2022-01-18 16:31:45,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3170, Invalid=11592, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 16:31:45,278 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 16:31:45,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 340 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 16:31:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-01-18 16:31:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 14045. [2022-01-18 16:31:45,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 3.498433494730846) internal successors, (49132), 14044 states have internal predecessors, (49132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 49132 transitions. [2022-01-18 16:31:45,719 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 49132 transitions. Word has length 34 [2022-01-18 16:31:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:31:45,719 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 49132 transitions. [2022-01-18 16:31:45,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:31:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 49132 transitions. [2022-01-18 16:31:45,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:31:45,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:31:45,740 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:31:45,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 16:31:45,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:31:45,941 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:31:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:31:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash -870461771, now seen corresponding path program 29 times [2022-01-18 16:31:45,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:31:45,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280536854] [2022-01-18 16:31:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:31:45,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:31:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:31:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:46,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:31:46,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280536854] [2022-01-18 16:31:46,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280536854] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:31:46,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410573190] [2022-01-18 16:31:46,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:31:46,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:31:46,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:31:46,213 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:31:46,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 16:31:46,237 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:31:46,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:31:46,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 16:31:46,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:31:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:47,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:31:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:31:50,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410573190] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:31:50,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:31:50,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:31:50,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548723567] [2022-01-18 16:31:50,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:31:50,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:31:50,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:31:50,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:31:50,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:31:50,670 INFO L87 Difference]: Start difference. First operand 14045 states and 49132 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:32:08,686 INFO L93 Difference]: Finished difference Result 27731 states and 91215 transitions. [2022-01-18 16:32:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 16:32:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:32:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:32:08,747 INFO L225 Difference]: With dead ends: 27731 [2022-01-18 16:32:08,747 INFO L226 Difference]: Without dead ends: 27518 [2022-01-18 16:32:08,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=5374, Invalid=24382, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 16:32:08,749 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 792 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 16:32:08,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 686 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 16:32:08,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-01-18 16:32:09,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 15571. [2022-01-18 16:32:09,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 3.5063583815028903) internal successors, (54594), 15570 states have internal predecessors, (54594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 54594 transitions. [2022-01-18 16:32:09,171 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 54594 transitions. Word has length 34 [2022-01-18 16:32:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:32:09,171 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 54594 transitions. [2022-01-18 16:32:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 54594 transitions. [2022-01-18 16:32:09,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:32:09,195 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:32:09,195 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:32:09,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 16:32:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:09,397 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:32:09,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:32:09,397 INFO L85 PathProgramCache]: Analyzing trace with hash 278461749, now seen corresponding path program 30 times [2022-01-18 16:32:09,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:32:09,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53127739] [2022-01-18 16:32:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:32:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:32:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:32:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:09,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:32:09,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53127739] [2022-01-18 16:32:09,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53127739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:32:09,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652980013] [2022-01-18 16:32:09,663 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:32:09,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:09,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:32:09,664 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:32:09,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 16:32:09,688 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 16:32:09,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:32:09,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:32:09,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:32:10,558 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:10,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:32:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:13,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652980013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:32:13,577 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:32:13,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:32:13,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550720300] [2022-01-18 16:32:13,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:32:13,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:32:13,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:32:13,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:32:13,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:32:13,578 INFO L87 Difference]: Start difference. First operand 15571 states and 54594 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:26,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:32:26,174 INFO L93 Difference]: Finished difference Result 28288 states and 95943 transitions. [2022-01-18 16:32:26,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-18 16:32:26,175 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:32:26,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:32:26,338 INFO L225 Difference]: With dead ends: 28288 [2022-01-18 16:32:26,339 INFO L226 Difference]: Without dead ends: 28097 [2022-01-18 16:32:26,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8540 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=4162, Invalid=20018, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 16:32:26,340 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 722 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:32:26,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 413 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 16:32:26,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28097 states. [2022-01-18 16:32:26,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28097 to 15481. [2022-01-18 16:32:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 3.5050387596899224) internal successors, (54258), 15480 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:26,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 54258 transitions. [2022-01-18 16:32:26,723 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 54258 transitions. Word has length 34 [2022-01-18 16:32:26,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:32:26,723 INFO L470 AbstractCegarLoop]: Abstraction has 15481 states and 54258 transitions. [2022-01-18 16:32:26,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:26,723 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 54258 transitions. [2022-01-18 16:32:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:32:26,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:32:26,747 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:32:26,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 16:32:26,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:26,948 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:32:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:32:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash 726875713, now seen corresponding path program 31 times [2022-01-18 16:32:26,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:32:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584906820] [2022-01-18 16:32:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:32:26,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:32:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:32:27,251 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:27,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:32:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584906820] [2022-01-18 16:32:27,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584906820] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:32:27,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074843368] [2022-01-18 16:32:27,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:32:27,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:27,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:32:27,254 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:32:27,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 16:32:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:32:27,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:32:27,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:32:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:28,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:32:30,945 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:30,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074843368] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:32:30,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:32:30,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 16:32:30,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692397457] [2022-01-18 16:32:30,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:32:30,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 16:32:30,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:32:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 16:32:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 16:32:30,946 INFO L87 Difference]: Start difference. First operand 15481 states and 54258 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:32:39,680 INFO L93 Difference]: Finished difference Result 29297 states and 98478 transitions. [2022-01-18 16:32:39,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 16:32:39,680 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:32:39,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:32:39,866 INFO L225 Difference]: With dead ends: 29297 [2022-01-18 16:32:39,866 INFO L226 Difference]: Without dead ends: 29071 [2022-01-18 16:32:39,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=3924, Invalid=15258, Unknown=0, NotChecked=0, Total=19182 [2022-01-18 16:32:39,867 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 594 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 16:32:39,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 430 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 16:32:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2022-01-18 16:32:40,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 17955. [2022-01-18 16:32:40,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17955 states, 17954 states have (on average 3.5179904199621252) internal successors, (63162), 17954 states have internal predecessors, (63162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 63162 transitions. [2022-01-18 16:32:40,308 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 63162 transitions. Word has length 34 [2022-01-18 16:32:40,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:32:40,308 INFO L470 AbstractCegarLoop]: Abstraction has 17955 states and 63162 transitions. [2022-01-18 16:32:40,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 63162 transitions. [2022-01-18 16:32:40,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 16:32:40,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:32:40,335 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:32:40,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 16:32:40,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 16:32:40,536 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:32:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:32:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1648577853, now seen corresponding path program 32 times [2022-01-18 16:32:40,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:32:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414899877] [2022-01-18 16:32:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:32:40,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:32:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:32:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:40,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:32:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414899877] [2022-01-18 16:32:40,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414899877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:32:40,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197685740] [2022-01-18 16:32:40,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:32:40,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:40,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:32:40,831 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:32:40,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 16:32:40,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:32:40,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:32:40,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 16:32:40,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:32:41,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:41,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:32:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:44,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197685740] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:32:44,446 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:32:44,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 16:32:44,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183993050] [2022-01-18 16:32:44,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:32:44,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 16:32:44,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:32:44,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 16:32:44,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 16:32:44,448 INFO L87 Difference]: Start difference. First operand 17955 states and 63162 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:32:51,695 INFO L93 Difference]: Finished difference Result 29870 states and 101083 transitions. [2022-01-18 16:32:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 16:32:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 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 34 [2022-01-18 16:32:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:32:51,770 INFO L225 Difference]: With dead ends: 29870 [2022-01-18 16:32:51,770 INFO L226 Difference]: Without dead ends: 29732 [2022-01-18 16:32:51,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=3295, Invalid=12961, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 16:32:51,772 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 455 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 16:32:51,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 333 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 16:32:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2022-01-18 16:32:52,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 18408. [2022-01-18 16:32:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18408 states, 18407 states have (on average 3.5227359156842506) internal successors, (64843), 18407 states have internal predecessors, (64843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 64843 transitions. [2022-01-18 16:32:52,346 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 64843 transitions. Word has length 34 [2022-01-18 16:32:52,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:32:52,346 INFO L470 AbstractCegarLoop]: Abstraction has 18408 states and 64843 transitions. [2022-01-18 16:32:52,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:32:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 64843 transitions. [2022-01-18 16:32:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:32:52,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:32:52,376 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:32:52,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 16:32:52,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:52,588 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:32:52,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:32:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581361, now seen corresponding path program 33 times [2022-01-18 16:32:52,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:32:52,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994715066] [2022-01-18 16:32:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:32:52,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:32:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:32:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:32:52,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:32:52,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994715066] [2022-01-18 16:32:52,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994715066] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:32:52,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009268334] [2022-01-18 16:32:52,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:32:52,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:32:52,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:32:52,955 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:32:52,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 16:32:52,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 16:32:52,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:32:52,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 16:32:52,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:32:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:54,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:32:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:32:56,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009268334] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:32:56,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:32:56,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-01-18 16:32:56,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747460751] [2022-01-18 16:32:56,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:32:56,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 16:32:56,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:32:56,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 16:32:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 16:32:56,410 INFO L87 Difference]: Start difference. First operand 18408 states and 64843 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:33:14,180 INFO L93 Difference]: Finished difference Result 39425 states and 133315 transitions. [2022-01-18 16:33:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-01-18 16:33:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:33:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:33:14,279 INFO L225 Difference]: With dead ends: 39425 [2022-01-18 16:33:14,279 INFO L226 Difference]: Without dead ends: 39171 [2022-01-18 16:33:14,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13482 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=5776, Invalid=30896, Unknown=0, NotChecked=0, Total=36672 [2022-01-18 16:33:14,281 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 928 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 16:33:14,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 596 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 16:33:14,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2022-01-18 16:33:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 20370. [2022-01-18 16:33:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20370 states, 20369 states have (on average 3.524424370366734) internal successors, (71789), 20369 states have internal predecessors, (71789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20370 states to 20370 states and 71789 transitions. [2022-01-18 16:33:14,915 INFO L78 Accepts]: Start accepts. Automaton has 20370 states and 71789 transitions. Word has length 36 [2022-01-18 16:33:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:33:14,915 INFO L470 AbstractCegarLoop]: Abstraction has 20370 states and 71789 transitions. [2022-01-18 16:33:14,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 20370 states and 71789 transitions. [2022-01-18 16:33:14,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:33:14,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:33:14,947 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:33:14,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 16:33:15,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:33:15,148 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:33:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:33:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash 705856911, now seen corresponding path program 34 times [2022-01-18 16:33:15,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:33:15,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520235326] [2022-01-18 16:33:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:33:15,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:33:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:33:15,534 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:33:15,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:33:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520235326] [2022-01-18 16:33:15,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520235326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:33:15,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375615516] [2022-01-18 16:33:15,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:33:15,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:33:15,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:33:15,536 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:33:15,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 16:33:15,559 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:33:15,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:33:15,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 16:33:15,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:33:16,691 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:33:16,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:33:20,517 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:33:20,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375615516] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:33:20,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:33:20,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-01-18 16:33:20,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284836927] [2022-01-18 16:33:20,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:33:20,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:33:20,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:33:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:33:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2203, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:33:20,519 INFO L87 Difference]: Start difference. First operand 20370 states and 71789 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:33:44,647 INFO L93 Difference]: Finished difference Result 37640 states and 127007 transitions. [2022-01-18 16:33:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 16:33:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:33:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:33:44,729 INFO L225 Difference]: With dead ends: 37640 [2022-01-18 16:33:44,729 INFO L226 Difference]: Without dead ends: 37431 [2022-01-18 16:33:44,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10801 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=5044, Invalid=24712, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 16:33:44,731 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 749 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 16:33:44,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 810 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 16:33:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37431 states. [2022-01-18 16:33:45,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37431 to 22320. [2022-01-18 16:33:45,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22320 states, 22319 states have (on average 3.5096554505130158) internal successors, (78332), 22319 states have internal predecessors, (78332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22320 states to 22320 states and 78332 transitions. [2022-01-18 16:33:45,274 INFO L78 Accepts]: Start accepts. Automaton has 22320 states and 78332 transitions. Word has length 36 [2022-01-18 16:33:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:33:45,274 INFO L470 AbstractCegarLoop]: Abstraction has 22320 states and 78332 transitions. [2022-01-18 16:33:45,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:33:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 22320 states and 78332 transitions. [2022-01-18 16:33:45,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:33:45,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:33:45,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:33:45,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 16:33:45,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 16:33:45,508 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:33:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:33:45,509 INFO L85 PathProgramCache]: Analyzing trace with hash -132070257, now seen corresponding path program 35 times [2022-01-18 16:33:45,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:33:45,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112570721] [2022-01-18 16:33:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:33:45,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:33:45,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:33:45,847 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 16:33:45,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:33:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112570721] [2022-01-18 16:33:45,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112570721] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:33:45,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971509022] [2022-01-18 16:33:45,847 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:33:45,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:33:45,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:33:45,848 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:33:45,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 16:33:45,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:33:45,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:33:45,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 16:33:45,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:33:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:33:46,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:33:49,664 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:33:49,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971509022] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:33:49,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:33:49,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-01-18 16:33:49,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084342223] [2022-01-18 16:33:49,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:33:49,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 16:33:49,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:33:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 16:33:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2297, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 16:33:49,665 INFO L87 Difference]: Start difference. First operand 22320 states and 78332 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:27,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:34:27,926 INFO L93 Difference]: Finished difference Result 36818 states and 123722 transitions. [2022-01-18 16:34:27,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-01-18 16:34:27,927 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:34:27,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:34:28,009 INFO L225 Difference]: With dead ends: 36818 [2022-01-18 16:34:28,009 INFO L226 Difference]: Without dead ends: 36383 [2022-01-18 16:34:28,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16703 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=7341, Invalid=37815, Unknown=0, NotChecked=0, Total=45156 [2022-01-18 16:34:28,012 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1076 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:34:28,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1033 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 16:34:28,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36383 states. [2022-01-18 16:34:28,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36383 to 22991. [2022-01-18 16:34:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.5024358416702914) internal successors, (80521), 22990 states have internal predecessors, (80521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 80521 transitions. [2022-01-18 16:34:28,566 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 80521 transitions. Word has length 36 [2022-01-18 16:34:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:34:28,566 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 80521 transitions. [2022-01-18 16:34:28,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 80521 transitions. [2022-01-18 16:34:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:34:28,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:34:28,600 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:34:28,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 16:34:28,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 16:34:28,801 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:34:28,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:34:28,802 INFO L85 PathProgramCache]: Analyzing trace with hash 165942351, now seen corresponding path program 36 times [2022-01-18 16:34:28,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:34:28,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349312329] [2022-01-18 16:34:28,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:34:28,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:34:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:34:29,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:29,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:34:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349312329] [2022-01-18 16:34:29,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349312329] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:34:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975681290] [2022-01-18 16:34:29,091 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:34:29,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:34:29,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:34:29,092 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:34:29,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 16:34:29,121 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 16:34:29,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:34:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 16:34:29,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:34:30,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:30,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:34:32,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:32,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975681290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:34:32,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:34:32,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2022-01-18 16:34:32,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217163523] [2022-01-18 16:34:32,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:34:32,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 16:34:32,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:34:32,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 16:34:32,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1978, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 16:34:32,850 INFO L87 Difference]: Start difference. First operand 22991 states and 80521 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:51,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:34:51,628 INFO L93 Difference]: Finished difference Result 37235 states and 125952 transitions. [2022-01-18 16:34:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 16:34:51,628 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:34:51,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:34:51,714 INFO L225 Difference]: With dead ends: 37235 [2022-01-18 16:34:51,714 INFO L226 Difference]: Without dead ends: 36955 [2022-01-18 16:34:51,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10045 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=4219, Invalid=24851, Unknown=0, NotChecked=0, Total=29070 [2022-01-18 16:34:51,716 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 16:34:51,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 579 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 16:34:51,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2022-01-18 16:34:52,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 23455. [2022-01-18 16:34:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 23454 states have (on average 3.4936471390807537) internal successors, (81940), 23454 states have internal predecessors, (81940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:52,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 81940 transitions. [2022-01-18 16:34:52,305 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 81940 transitions. Word has length 36 [2022-01-18 16:34:52,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:34:52,305 INFO L470 AbstractCegarLoop]: Abstraction has 23455 states and 81940 transitions. [2022-01-18 16:34:52,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:34:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 81940 transitions. [2022-01-18 16:34:52,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:34:52,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:34:52,341 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:34:52,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 16:34:52,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 16:34:52,541 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:34:52,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:34:52,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1442269323, now seen corresponding path program 37 times [2022-01-18 16:34:52,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:34:52,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803297111] [2022-01-18 16:34:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:34:52,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:34:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:34:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:52,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:34:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803297111] [2022-01-18 16:34:52,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803297111] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:34:52,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970383322] [2022-01-18 16:34:52,868 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:34:52,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:34:52,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:34:52,869 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:34:52,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 16:34:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:34:52,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 16:34:52,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:34:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:53,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:34:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:34:56,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970383322] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:34:56,259 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:34:56,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-01-18 16:34:56,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339161479] [2022-01-18 16:34:56,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:34:56,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 16:34:56,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:34:56,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 16:34:56,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 16:34:56,260 INFO L87 Difference]: Start difference. First operand 23455 states and 81940 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:35:32,258 INFO L93 Difference]: Finished difference Result 39539 states and 132003 transitions. [2022-01-18 16:35:32,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-01-18 16:35:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:35:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:35:32,347 INFO L225 Difference]: With dead ends: 39539 [2022-01-18 16:35:32,347 INFO L226 Difference]: Without dead ends: 39108 [2022-01-18 16:35:32,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21216 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=8717, Invalid=45805, Unknown=0, NotChecked=0, Total=54522 [2022-01-18 16:35:32,350 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1081 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:35:32,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1164 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 16:35:32,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39108 states. [2022-01-18 16:35:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39108 to 23865. [2022-01-18 16:35:32,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23865 states, 23864 states have (on average 3.4881830372108618) internal successors, (83242), 23864 states have internal predecessors, (83242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:32,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23865 states to 23865 states and 83242 transitions. [2022-01-18 16:35:32,919 INFO L78 Accepts]: Start accepts. Automaton has 23865 states and 83242 transitions. Word has length 36 [2022-01-18 16:35:32,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:35:32,919 INFO L470 AbstractCegarLoop]: Abstraction has 23865 states and 83242 transitions. [2022-01-18 16:35:32,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:32,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23865 states and 83242 transitions. [2022-01-18 16:35:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:35:32,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:35:32,955 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:35:32,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 16:35:33,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 16:35:33,155 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:35:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:35:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1340971121, now seen corresponding path program 38 times [2022-01-18 16:35:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:35:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798111109] [2022-01-18 16:35:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:35:33,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:35:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:35:33,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:35:33,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:35:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798111109] [2022-01-18 16:35:33,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798111109] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:35:33,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223436689] [2022-01-18 16:35:33,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 16:35:33,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:35:33,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:35:33,624 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:35:33,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 16:35:33,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 16:35:33,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:35:33,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 16:35:33,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:35:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:35:34,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:35:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:35:36,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223436689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:35:36,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:35:36,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 51 [2022-01-18 16:35:36,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801213954] [2022-01-18 16:35:36,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:35:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:35:36,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:35:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:35:36,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:35:36,278 INFO L87 Difference]: Start difference. First operand 23865 states and 83242 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:56,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:35:56,800 INFO L93 Difference]: Finished difference Result 46254 states and 153652 transitions. [2022-01-18 16:35:56,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-01-18 16:35:56,801 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:35:56,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:35:56,900 INFO L225 Difference]: With dead ends: 46254 [2022-01-18 16:35:56,900 INFO L226 Difference]: Without dead ends: 45963 [2022-01-18 16:35:56,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30452 ImplicationChecksByTransitivity, 18.3s TimeCoverageRelationStatistics Valid=11343, Invalid=62913, Unknown=0, NotChecked=0, Total=74256 [2022-01-18 16:35:56,902 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1310 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 16:35:56,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 792 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 16:35:56,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45963 states. [2022-01-18 16:35:57,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45963 to 24356. [2022-01-18 16:35:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 3.4868815438308354) internal successors, (84923), 24355 states have internal predecessors, (84923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 84923 transitions. [2022-01-18 16:35:57,564 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 84923 transitions. Word has length 36 [2022-01-18 16:35:57,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:35:57,565 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 84923 transitions. [2022-01-18 16:35:57,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:35:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 84923 transitions. [2022-01-18 16:35:57,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:35:57,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:35:57,601 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:35:57,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 16:35:57,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:35:57,801 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:35:57,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:35:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -883763825, now seen corresponding path program 39 times [2022-01-18 16:35:57,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:35:57,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765682458] [2022-01-18 16:35:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:35:57,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:35:57,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:35:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:35:58,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:35:58,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765682458] [2022-01-18 16:35:58,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765682458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:35:58,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365951226] [2022-01-18 16:35:58,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 16:35:58,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:35:58,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:35:58,142 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:35:58,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 16:35:58,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 16:35:58,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:35:58,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 16:35:58,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:35:59,150 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:35:59,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:36:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:00,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365951226] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:36:00,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:36:00,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 16:36:00,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197585582] [2022-01-18 16:36:00,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:36:00,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:36:00,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:36:00,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:36:00,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:36:00,202 INFO L87 Difference]: Start difference. First operand 24356 states and 84923 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:16,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:36:16,825 INFO L93 Difference]: Finished difference Result 47727 states and 157820 transitions. [2022-01-18 16:36:16,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 16:36:16,825 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:36:16,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:36:16,929 INFO L225 Difference]: With dead ends: 47727 [2022-01-18 16:36:16,929 INFO L226 Difference]: Without dead ends: 47130 [2022-01-18 16:36:16,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22222 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=8220, Invalid=50102, Unknown=0, NotChecked=0, Total=58322 [2022-01-18 16:36:16,932 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1475 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 7641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:36:16,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 893 Invalid, 7641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6996 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 16:36:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-01-18 16:36:17,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 24572. [2022-01-18 16:36:17,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 3.482560742338529) internal successors, (85570), 24571 states have internal predecessors, (85570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 85570 transitions. [2022-01-18 16:36:17,631 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 85570 transitions. Word has length 36 [2022-01-18 16:36:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:36:17,631 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 85570 transitions. [2022-01-18 16:36:17,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 85570 transitions. [2022-01-18 16:36:17,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:36:17,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:36:17,668 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:36:17,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 16:36:17,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 16:36:17,869 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:36:17,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:36:17,869 INFO L85 PathProgramCache]: Analyzing trace with hash 231013519, now seen corresponding path program 40 times [2022-01-18 16:36:17,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:36:17,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306575856] [2022-01-18 16:36:17,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:36:17,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:36:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:36:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:18,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:36:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306575856] [2022-01-18 16:36:18,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306575856] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:36:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570405855] [2022-01-18 16:36:18,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 16:36:18,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:36:18,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:36:18,244 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:36:18,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 16:36:18,272 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 16:36:18,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:36:18,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 16:36:18,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:36:19,463 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:19,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:36:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570405855] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:36:20,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:36:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-01-18 16:36:20,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480207828] [2022-01-18 16:36:20,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:36:20,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 16:36:20,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:36:20,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 16:36:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2513, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 16:36:20,640 INFO L87 Difference]: Start difference. First operand 24572 states and 85570 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:42,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:36:42,947 INFO L93 Difference]: Finished difference Result 51559 states and 166281 transitions. [2022-01-18 16:36:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-01-18 16:36:42,948 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:36:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:36:43,075 INFO L225 Difference]: With dead ends: 51559 [2022-01-18 16:36:43,075 INFO L226 Difference]: Without dead ends: 50974 [2022-01-18 16:36:43,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36935 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=13139, Invalid=73591, Unknown=0, NotChecked=0, Total=86730 [2022-01-18 16:36:43,080 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1672 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 16:36:43,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 1087 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 16:36:43,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50974 states. [2022-01-18 16:36:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50974 to 25902. [2022-01-18 16:36:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25902 states, 25901 states have (on average 3.4722983668584226) internal successors, (89936), 25901 states have internal predecessors, (89936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:43,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 89936 transitions. [2022-01-18 16:36:43,886 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 89936 transitions. Word has length 36 [2022-01-18 16:36:43,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:36:43,886 INFO L470 AbstractCegarLoop]: Abstraction has 25902 states and 89936 transitions. [2022-01-18 16:36:43,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:36:43,886 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 89936 transitions. [2022-01-18 16:36:43,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:36:43,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:36:43,930 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:36:43,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 16:36:44,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 16:36:44,131 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:36:44,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:36:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 534588811, now seen corresponding path program 41 times [2022-01-18 16:36:44,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:36:44,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052477793] [2022-01-18 16:36:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:36:44,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:36:44,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:36:44,510 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:44,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:36:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052477793] [2022-01-18 16:36:44,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052477793] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:36:44,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702299491] [2022-01-18 16:36:44,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 16:36:44,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:36:44,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:36:44,512 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:36:44,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 16:36:44,546 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 16:36:44,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:36:44,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 16:36:44,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:36:45,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:45,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:36:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:36:46,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702299491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:36:46,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:36:46,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-01-18 16:36:46,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458642917] [2022-01-18 16:36:46,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:36:46,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 16:36:46,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:36:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 16:36:46,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 16:36:46,590 INFO L87 Difference]: Start difference. First operand 25902 states and 89936 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:10,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:37:10,278 INFO L93 Difference]: Finished difference Result 53208 states and 171321 transitions. [2022-01-18 16:37:10,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-01-18 16:37:10,278 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:37:10,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:37:10,406 INFO L225 Difference]: With dead ends: 53208 [2022-01-18 16:37:10,406 INFO L226 Difference]: Without dead ends: 52586 [2022-01-18 16:37:10,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46434 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=16388, Invalid=90868, Unknown=0, NotChecked=0, Total=107256 [2022-01-18 16:37:10,411 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1836 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 6726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 16:37:10,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1118 Invalid, 6726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 16:37:10,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-01-18 16:37:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 26033. [2022-01-18 16:37:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26033 states, 26032 states have (on average 3.4720728334357713) internal successors, (90385), 26032 states have internal predecessors, (90385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:11,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26033 states to 26033 states and 90385 transitions. [2022-01-18 16:37:11,271 INFO L78 Accepts]: Start accepts. Automaton has 26033 states and 90385 transitions. Word has length 36 [2022-01-18 16:37:11,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:37:11,271 INFO L470 AbstractCegarLoop]: Abstraction has 26033 states and 90385 transitions. [2022-01-18 16:37:11,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:11,272 INFO L276 IsEmpty]: Start isEmpty. Operand 26033 states and 90385 transitions. [2022-01-18 16:37:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:37:11,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:37:11,315 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:37:11,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 16:37:11,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 16:37:11,515 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:37:11,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:37:11,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1576431985, now seen corresponding path program 42 times [2022-01-18 16:37:11,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:37:11,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67495715] [2022-01-18 16:37:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:37:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:37:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:37:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:11,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:37:11,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67495715] [2022-01-18 16:37:11,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67495715] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:37:11,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842769402] [2022-01-18 16:37:11,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 16:37:11,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:37:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:37:11,868 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:37:11,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 16:37:11,892 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 16:37:11,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 16:37:11,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 16:37:11,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:37:12,950 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:12,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:37:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:13,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842769402] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:37:13,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:37:13,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 16:37:13,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212673714] [2022-01-18 16:37:13,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:37:13,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 16:37:13,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:37:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 16:37:13,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2184, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 16:37:13,993 INFO L87 Difference]: Start difference. First operand 26033 states and 90385 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:32,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:37:32,787 INFO L93 Difference]: Finished difference Result 53222 states and 174091 transitions. [2022-01-18 16:37:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-01-18 16:37:32,787 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:37:32,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:37:32,925 INFO L225 Difference]: With dead ends: 53222 [2022-01-18 16:37:32,925 INFO L226 Difference]: Without dead ends: 52732 [2022-01-18 16:37:32,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34683 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=13109, Invalid=70701, Unknown=0, NotChecked=0, Total=83810 [2022-01-18 16:37:32,928 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1961 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-01-18 16:37:32,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1019 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-01-18 16:37:32,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2022-01-18 16:37:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 25812. [2022-01-18 16:37:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25812 states, 25811 states have (on average 3.473247840068188) internal successors, (89648), 25811 states have internal predecessors, (89648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:33,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25812 states to 25812 states and 89648 transitions. [2022-01-18 16:37:33,816 INFO L78 Accepts]: Start accepts. Automaton has 25812 states and 89648 transitions. Word has length 36 [2022-01-18 16:37:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 16:37:33,816 INFO L470 AbstractCegarLoop]: Abstraction has 25812 states and 89648 transitions. [2022-01-18 16:37:33,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:37:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 25812 states and 89648 transitions. [2022-01-18 16:37:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 16:37:33,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 16:37:33,860 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 16:37:33,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 16:37:34,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:37:34,063 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 16:37:34,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 16:37:34,064 INFO L85 PathProgramCache]: Analyzing trace with hash 24674187, now seen corresponding path program 43 times [2022-01-18 16:37:34,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 16:37:34,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316131788] [2022-01-18 16:37:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 16:37:34,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 16:37:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:37:34,586 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:34,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 16:37:34,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316131788] [2022-01-18 16:37:34,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316131788] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 16:37:34,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262822325] [2022-01-18 16:37:34,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 16:37:34,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:37:34,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 16:37:34,588 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 16:37:34,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 16:37:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 16:37:34,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 16:37:34,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 16:37:35,801 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:35,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 16:37:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 16:37:38,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262822325] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 16:37:38,725 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 16:37:38,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-01-18 16:37:38,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739940476] [2022-01-18 16:37:38,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 16:37:38,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 16:37:38,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 16:37:38,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 16:37:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 16:37:38,726 INFO L87 Difference]: Start difference. First operand 25812 states and 89648 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 16:38:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 16:38:13,556 INFO L93 Difference]: Finished difference Result 51318 states and 167310 transitions. [2022-01-18 16:38:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-18 16:38:13,556 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 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 36 [2022-01-18 16:38:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 16:38:13,686 INFO L225 Difference]: With dead ends: 51318 [2022-01-18 16:38:13,686 INFO L226 Difference]: Without dead ends: 51159 [2022-01-18 16:38:13,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25218 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=9421, Invalid=52829, Unknown=0, NotChecked=0, Total=62250 [2022-01-18 16:38:13,689 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 1121 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 16:38:13,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 598 Invalid, 3908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 16:38:13,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51159 states. Received shutdown request... [2022-01-18 16:38:13,955 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 16:38:13,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 16:38:13,997 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 16:38:13,997 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 16:38:14,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 16:38:14,156 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-01-18 16:38:14,158 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 16:38:14,158 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 16:38:14,158 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 16:38:14,164 INFO L732 BasicCegarLoop]: Path program histogram: [43, 1, 1, 1] [2022-01-18 16:38:14,167 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 16:38:14,167 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 16:38:14,169 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 04:38:14 BasicIcfg [2022-01-18 16:38:14,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 16:38:14,170 INFO L158 Benchmark]: Toolchain (without parser) took 709201.78ms. Allocated memory was 385.9MB in the beginning and 2.3GB in the end (delta: 1.9GB). Free memory was 348.3MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 1.3GB. Max. memory is 16.0GB. [2022-01-18 16:38:14,170 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.14ms. Allocated memory is still 385.9MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 16:38:14,170 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.47ms. Allocated memory is still 385.9MB. Free memory was 348.3MB in the beginning and 346.7MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 16:38:14,170 INFO L158 Benchmark]: Boogie Preprocessor took 16.81ms. Allocated memory is still 385.9MB. Free memory was 346.7MB in the beginning and 345.8MB in the end (delta: 899.3kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 16:38:14,170 INFO L158 Benchmark]: RCFGBuilder took 208.92ms. Allocated memory is still 385.9MB. Free memory was 345.7MB in the beginning and 335.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 16:38:14,170 INFO L158 Benchmark]: TraceAbstraction took 708939.15ms. Allocated memory was 385.9MB in the beginning and 2.3GB in the end (delta: 1.9GB). Free memory was 335.2MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-18 16:38:14,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.14ms. Allocated memory is still 385.9MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.47ms. Allocated memory is still 385.9MB. Free memory was 348.3MB in the beginning and 346.7MB in the end (delta: 1.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.81ms. Allocated memory is still 385.9MB. Free memory was 346.7MB in the beginning and 345.8MB in the end (delta: 899.3kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 208.92ms. Allocated memory is still 385.9MB. Free memory was 345.7MB in the beginning and 335.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 708939.15ms. Allocated memory was 385.9MB in the beginning and 2.3GB in the end (delta: 1.9GB). Free memory was 335.2MB in the beginning and 1.8GB in the end (delta: -1.5GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 708.8s, OverallIterations: 46, TraceHistogramMax: 4, PathProgramHistogramMax: 43, EmptinessCheckTime: 0.8s, AutomataDifference: 557.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 35143 SdHoareTripleChecker+Valid, 75.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35143 mSDsluCounter, 22899 SdHoareTripleChecker+Invalid, 64.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30569 mSDsCounter, 18060 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141046 IncrementalHoareTripleChecker+Invalid, 159106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18060 mSolverCounterUnsat, 1122 mSDtfsCounter, 141046 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8533 GetRequests, 1639 SyntacticMatches, 104 SemanticMatches, 6790 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518865 ImplicationChecksByTransitivity, 511.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26033occurred in iteration=44, InterpolantAutomatonStates: 6108, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.3s AutomataMinimizationTime, 46 MinimizatonAttempts, 408538 StatesRemovedByMinimization, 43 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 126.7s InterpolantComputationTime, 2963 NumberOfCodeBlocks, 2963 NumberOfCodeBlocksAsserted, 171 NumberOfCheckSat, 4265 ConstructedInterpolants, 0 QuantifiedInterpolants, 155859 SizeOfPredicates, 505 NumberOfNonLiveVariables, 2650 ConjunctsInSsa, 816 ConjunctsInUnsatCore, 130 InterpolantComputations, 4 PerfectInterpolantSequences, 96/1878 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown