/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-4b0ab11 [2022-03-03 20:18:44,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-03 20:18:44,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-03 20:18:44,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-03 20:18:44,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-03 20:18:44,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-03 20:18:44,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-03 20:18:44,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-03-03 20:18:44,485 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-03 20:18:44,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-03 20:18:44,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-03-03 20:18:44,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-03-03 20:18:44,486 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-03 20:18:44,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-03 20:18:44,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-03 20:18:44,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-03 20:18:44,486 INFO L138 SettingsManager]: * Use SBE=true [2022-03-03 20:18:44,486 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-03 20:18:44,486 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-03 20:18:44,486 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-03 20:18:44,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-03 20:18:44,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 20:18:44,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-03 20:18:44,488 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-03 20:18:44,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-03 20:18:44,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-03 20:18:44,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-03 20:18:44,676 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-03 20:18:44,678 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-03 20:18:44,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl [2022-03-03 20:18:44,680 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/easy6.wvr.bpl' [2022-03-03 20:18:44,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-03 20:18:44,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-03 20:18:44,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-03 20:18:44,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-03 20:18:44,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-03 20:18:44,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,720 INFO L137 Inliner]: procedures = 3, calls = 2, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-03 20:18:44,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-03 20:18:44,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-03 20:18:44,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-03 20:18:44,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-03 20:18:44,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,727 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-03 20:18:44,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-03 20:18:44,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-03 20:18:44,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-03 20:18:44,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/1) ... [2022-03-03 20:18:44,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-03 20:18:44,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-03 20:18:44,757 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-03 20:18:44,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-03 20:18:44,797 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-03-03 20:18:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-03-03 20:18:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-03-03 20:18:44,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-03-03 20:18:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-03-03 20:18:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-03-03 20:18:44,798 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-03 20:18:44,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-03 20:18:44,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-03 20:18:44,799 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-03 20:18:44,833 INFO L234 CfgBuilder]: Building ICFG [2022-03-03 20:18:44,834 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-03 20:18:44,936 INFO L275 CfgBuilder]: Performing block encoding [2022-03-03 20:18:44,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-03 20:18:44,941 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-03 20:18:44,942 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 08:18:44 BoogieIcfgContainer [2022-03-03 20:18:44,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-03 20:18:44,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-03 20:18:44,943 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-03 20:18:44,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-03 20:18:44,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.03 08:18:44" (1/2) ... [2022-03-03 20:18:44,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51153eac and model type easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 08:18:44, skipping insertion in model container [2022-03-03 20:18:44,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.03 08:18:44" (2/2) ... [2022-03-03 20:18:44,956 INFO L111 eAbstractionObserver]: Analyzing ICFG easy6.wvr.bpl [2022-03-03 20:18:44,959 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-03 20:18:44,959 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-03 20:18:44,959 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-03 20:18:44,959 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-03 20:18:45,006 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-03-03 20:18:45,046 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-03 20:18:45,053 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-03 20:18:45,053 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-03 20:18:45,062 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 35 transitions, 86 flow [2022-03-03 20:18:45,102 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 152 states, 151 states have (on average 1.794701986754967) internal successors, (271), 151 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,104 INFO L276 IsEmpty]: Start isEmpty. Operand has 152 states, 151 states have (on average 1.794701986754967) internal successors, (271), 151 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:45,110 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:45,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:45,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:45,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:45,115 INFO L85 PathProgramCache]: Analyzing trace with hash 49908597, now seen corresponding path program 1 times [2022-03-03 20:18:45,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:45,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278587159] [2022-03-03 20:18:45,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:45,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:45,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:45,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:45,420 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:45,420 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278587159] [2022-03-03 20:18:45,420 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278587159] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:45,421 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:45,421 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 20:18:45,422 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12362580] [2022-03-03 20:18:45,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:45,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 20:18:45,425 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:45,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 20:18:45,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 20:18:45,453 INFO L87 Difference]: Start difference. First operand has 152 states, 151 states have (on average 1.794701986754967) internal successors, (271), 151 states have internal predecessors, (271), 0 states have call successors, (0), 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 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:45,608 INFO L93 Difference]: Finished difference Result 202 states and 341 transitions. [2022-03-03 20:18:45,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 20:18:45,610 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:45,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:45,616 INFO L225 Difference]: With dead ends: 202 [2022-03-03 20:18:45,616 INFO L226 Difference]: Without dead ends: 154 [2022-03-03 20:18:45,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 20:18:45,619 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 63 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:45,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 205 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 20:18:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-03-03 20:18:45,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2022-03-03 20:18:45,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.7416666666666667) internal successors, (209), 120 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 209 transitions. [2022-03-03 20:18:45,674 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 209 transitions. Word has length 31 [2022-03-03 20:18:45,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:45,674 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 209 transitions. [2022-03-03 20:18:45,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,674 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 209 transitions. [2022-03-03 20:18:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:45,675 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:45,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:45,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-03 20:18:45,676 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:45,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:45,676 INFO L85 PathProgramCache]: Analyzing trace with hash -186072587, now seen corresponding path program 2 times [2022-03-03 20:18:45,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:45,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783849394] [2022-03-03 20:18:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:45,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:45,728 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:45,728 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783849394] [2022-03-03 20:18:45,728 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783849394] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:45,728 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:45,728 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 20:18:45,728 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006246532] [2022-03-03 20:18:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:45,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 20:18:45,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 20:18:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 20:18:45,730 INFO L87 Difference]: Start difference. First operand 121 states and 209 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:45,839 INFO L93 Difference]: Finished difference Result 228 states and 387 transitions. [2022-03-03 20:18:45,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 20:18:45,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:45,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:45,843 INFO L225 Difference]: With dead ends: 228 [2022-03-03 20:18:45,843 INFO L226 Difference]: Without dead ends: 193 [2022-03-03 20:18:45,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-03-03 20:18:45,848 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 85 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:45,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 195 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:45,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-03-03 20:18:45,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 106. [2022-03-03 20:18:45,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.7047619047619047) internal successors, (179), 105 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 179 transitions. [2022-03-03 20:18:45,866 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 179 transitions. Word has length 31 [2022-03-03 20:18:45,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:45,866 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 179 transitions. [2022-03-03 20:18:45,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 179 transitions. [2022-03-03 20:18:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:45,867 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:45,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:45,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-03 20:18:45,868 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:45,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:45,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1592658205, now seen corresponding path program 3 times [2022-03-03 20:18:45,868 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:45,868 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911196711] [2022-03-03 20:18:45,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:45,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:45,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:45,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911196711] [2022-03-03 20:18:45,884 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911196711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:45,884 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:45,884 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 20:18:45,884 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736021342] [2022-03-03 20:18:45,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:45,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 20:18:45,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 20:18:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 20:18:45,885 INFO L87 Difference]: Start difference. First operand 106 states and 179 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:45,892 INFO L93 Difference]: Finished difference Result 100 states and 167 transitions. [2022-03-03 20:18:45,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 20:18:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:45,893 INFO L225 Difference]: With dead ends: 100 [2022-03-03 20:18:45,893 INFO L226 Difference]: Without dead ends: 100 [2022-03-03 20:18:45,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 20:18:45,894 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:45,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 50 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:45,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-03 20:18:45,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-03-03 20:18:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6868686868686869) internal successors, (167), 99 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 167 transitions. [2022-03-03 20:18:45,898 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 167 transitions. Word has length 31 [2022-03-03 20:18:45,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:45,899 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 167 transitions. [2022-03-03 20:18:45,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:45,899 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 167 transitions. [2022-03-03 20:18:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:45,899 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:45,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:45,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-03 20:18:45,900 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:45,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:45,900 INFO L85 PathProgramCache]: Analyzing trace with hash 875497381, now seen corresponding path program 4 times [2022-03-03 20:18:45,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:45,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598849003] [2022-03-03 20:18:45,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:45,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598849003] [2022-03-03 20:18:46,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598849003] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-03 20:18:46,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273893963] [2022-03-03 20:18:46,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 20:18:46,008 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 20:18:46,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-03 20:18:46,009 INFO L87 Difference]: Start difference. First operand 100 states and 167 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,073 INFO L93 Difference]: Finished difference Result 131 states and 210 transitions. [2022-03-03 20:18:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-03 20:18:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,074 INFO L225 Difference]: With dead ends: 131 [2022-03-03 20:18:46,074 INFO L226 Difference]: Without dead ends: 94 [2022-03-03 20:18:46,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-03-03 20:18:46,079 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 55 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 187 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-03 20:18:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2022-03-03 20:18:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.6025641025641026) internal successors, (125), 78 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2022-03-03 20:18:46,087 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 31 [2022-03-03 20:18:46,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,087 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2022-03-03 20:18:46,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,088 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2022-03-03 20:18:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,088 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-03 20:18:46,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1502143083, now seen corresponding path program 5 times [2022-03-03 20:18:46,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972398786] [2022-03-03 20:18:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:46,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972398786] [2022-03-03 20:18:46,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972398786] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:46,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115104112] [2022-03-03 20:18:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:46,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:46,184 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,297 INFO L93 Difference]: Finished difference Result 214 states and 334 transitions. [2022-03-03 20:18:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 20:18:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,299 INFO L225 Difference]: With dead ends: 214 [2022-03-03 20:18:46,299 INFO L226 Difference]: Without dead ends: 208 [2022-03-03 20:18:46,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:46,301 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 165 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 171 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-03-03 20:18:46,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 90. [2022-03-03 20:18:46,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.595505617977528) internal successors, (142), 89 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 142 transitions. [2022-03-03 20:18:46,312 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 142 transitions. Word has length 31 [2022-03-03 20:18:46,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,313 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 142 transitions. [2022-03-03 20:18:46,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,314 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 142 transitions. [2022-03-03 20:18:46,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-03 20:18:46,319 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1557596779, now seen corresponding path program 6 times [2022-03-03 20:18:46,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305004085] [2022-03-03 20:18:46,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,431 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,431 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305004085] [2022-03-03 20:18:46,431 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305004085] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,431 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,431 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:46,431 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115527202] [2022-03-03 20:18:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:46,432 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:46,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:46,432 INFO L87 Difference]: Start difference. First operand 90 states and 142 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,574 INFO L93 Difference]: Finished difference Result 201 states and 310 transitions. [2022-03-03 20:18:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 20:18:46,574 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,575 INFO L225 Difference]: With dead ends: 201 [2022-03-03 20:18:46,575 INFO L226 Difference]: Without dead ends: 187 [2022-03-03 20:18:46,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:46,577 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 166 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 171 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 20:18:46,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-03-03 20:18:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 80. [2022-03-03 20:18:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.5949367088607596) internal successors, (126), 79 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2022-03-03 20:18:46,587 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 31 [2022-03-03 20:18:46,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,588 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2022-03-03 20:18:46,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,588 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2022-03-03 20:18:46,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,590 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-03 20:18:46,590 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1357910711, now seen corresponding path program 7 times [2022-03-03 20:18:46,592 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,592 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614512062] [2022-03-03 20:18:46,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,677 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,677 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614512062] [2022-03-03 20:18:46,677 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614512062] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,677 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,677 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:46,677 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468985422] [2022-03-03 20:18:46,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:46,677 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:46,678 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,776 INFO L93 Difference]: Finished difference Result 200 states and 309 transitions. [2022-03-03 20:18:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 20:18:46,777 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,778 INFO L225 Difference]: With dead ends: 200 [2022-03-03 20:18:46,778 INFO L226 Difference]: Without dead ends: 194 [2022-03-03 20:18:46,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:46,778 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 160 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 166 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-03-03 20:18:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 91. [2022-03-03 20:18:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.6) internal successors, (144), 90 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 144 transitions. [2022-03-03 20:18:46,782 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 144 transitions. Word has length 31 [2022-03-03 20:18:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,782 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 144 transitions. [2022-03-03 20:18:46,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,782 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 144 transitions. [2022-03-03 20:18:46,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,782 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-03 20:18:46,783 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1302457015, now seen corresponding path program 8 times [2022-03-03 20:18:46,783 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,783 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175913193] [2022-03-03 20:18:46,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:46,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,861 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,861 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175913193] [2022-03-03 20:18:46,861 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175913193] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,861 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,861 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:46,861 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447493381] [2022-03-03 20:18:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:46,862 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:46,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:46,862 INFO L87 Difference]: Start difference. First operand 91 states and 144 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,967 INFO L93 Difference]: Finished difference Result 187 states and 285 transitions. [2022-03-03 20:18:46,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-03 20:18:46,968 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,968 INFO L225 Difference]: With dead ends: 187 [2022-03-03 20:18:46,968 INFO L226 Difference]: Without dead ends: 175 [2022-03-03 20:18:46,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:46,969 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 135 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 176 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-03 20:18:46,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-03-03 20:18:46,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 83. [2022-03-03 20:18:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.5731707317073171) internal successors, (129), 82 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2022-03-03 20:18:46,972 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 31 [2022-03-03 20:18:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,972 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2022-03-03 20:18:46,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2022-03-03 20:18:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,973 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-03 20:18:46,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1404480841, now seen corresponding path program 9 times [2022-03-03 20:18:46,974 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391065762] [2022-03-03 20:18:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:46,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:46,985 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:46,985 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391065762] [2022-03-03 20:18:46,985 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391065762] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:46,985 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:46,985 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-03 20:18:46,985 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600790288] [2022-03-03 20:18:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:46,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-03 20:18:46,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:46,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-03 20:18:46,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 20:18:46,986 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:46,992 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2022-03-03 20:18:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-03 20:18:46,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:46,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:46,993 INFO L225 Difference]: With dead ends: 82 [2022-03-03 20:18:46,993 INFO L226 Difference]: Without dead ends: 76 [2022-03-03 20:18:46,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-03 20:18:46,993 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:46,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:46,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-03-03 20:18:46,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2022-03-03 20:18:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.5466666666666666) internal successors, (116), 75 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 116 transitions. [2022-03-03 20:18:46,996 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 116 transitions. Word has length 31 [2022-03-03 20:18:46,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:46,996 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 116 transitions. [2022-03-03 20:18:46,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 116 transitions. [2022-03-03 20:18:46,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:46,996 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:46,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:46,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-03-03 20:18:46,997 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1169327325, now seen corresponding path program 10 times [2022-03-03 20:18:46,997 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:46,997 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62569682] [2022-03-03 20:18:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:46,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:47,061 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:47,061 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62569682] [2022-03-03 20:18:47,061 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62569682] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:47,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:47,062 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:47,062 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362834726] [2022-03-03 20:18:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:47,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:47,062 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:47,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:47,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:47,063 INFO L87 Difference]: Start difference. First operand 76 states and 116 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:47,142 INFO L93 Difference]: Finished difference Result 98 states and 150 transitions. [2022-03-03 20:18:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 20:18:47,143 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:47,143 INFO L225 Difference]: With dead ends: 98 [2022-03-03 20:18:47,143 INFO L226 Difference]: Without dead ends: 94 [2022-03-03 20:18:47,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:47,144 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 111 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:47,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 97 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:47,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-03-03 20:18:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 83. [2022-03-03 20:18:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.5365853658536586) internal successors, (126), 82 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 126 transitions. [2022-03-03 20:18:47,146 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 126 transitions. Word has length 31 [2022-03-03 20:18:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:47,146 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 126 transitions. [2022-03-03 20:18:47,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 126 transitions. [2022-03-03 20:18:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:47,147 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:47,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:47,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-03-03 20:18:47,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1224781021, now seen corresponding path program 11 times [2022-03-03 20:18:47,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:47,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532768948] [2022-03-03 20:18:47,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:47,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:47,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:47,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532768948] [2022-03-03 20:18:47,207 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532768948] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:47,207 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:47,207 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:47,207 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883531323] [2022-03-03 20:18:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:47,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:47,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:47,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:47,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:47,208 INFO L87 Difference]: Start difference. First operand 83 states and 126 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:47,284 INFO L93 Difference]: Finished difference Result 87 states and 130 transitions. [2022-03-03 20:18:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 20:18:47,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:47,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:47,285 INFO L225 Difference]: With dead ends: 87 [2022-03-03 20:18:47,285 INFO L226 Difference]: Without dead ends: 74 [2022-03-03 20:18:47,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:47,286 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 119 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:47,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 91 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:47,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-03 20:18:47,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-03-03 20:18:47,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.5342465753424657) internal successors, (112), 73 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 112 transitions. [2022-03-03 20:18:47,288 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 112 transitions. Word has length 31 [2022-03-03 20:18:47,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:47,288 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 112 transitions. [2022-03-03 20:18:47,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,289 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 112 transitions. [2022-03-03 20:18:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:47,289 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:47,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:47,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-03-03 20:18:47,289 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1690726469, now seen corresponding path program 12 times [2022-03-03 20:18:47,290 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:47,290 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34750597] [2022-03-03 20:18:47,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:47,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:47,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:47,345 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34750597] [2022-03-03 20:18:47,345 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34750597] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:47,345 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:47,345 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:47,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010848003] [2022-03-03 20:18:47,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:47,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:47,346 INFO L87 Difference]: Start difference. First operand 74 states and 112 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:47,434 INFO L93 Difference]: Finished difference Result 104 states and 159 transitions. [2022-03-03 20:18:47,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 20:18:47,435 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:47,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:47,435 INFO L225 Difference]: With dead ends: 104 [2022-03-03 20:18:47,435 INFO L226 Difference]: Without dead ends: 100 [2022-03-03 20:18:47,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:47,436 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 132 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:47,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 114 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:47,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-03-03 20:18:47,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 83. [2022-03-03 20:18:47,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.524390243902439) internal successors, (125), 82 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 125 transitions. [2022-03-03 20:18:47,439 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 125 transitions. Word has length 31 [2022-03-03 20:18:47,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:47,439 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 125 transitions. [2022-03-03 20:18:47,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,439 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 125 transitions. [2022-03-03 20:18:47,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:47,439 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:47,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:47,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-03-03 20:18:47,440 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:47,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:47,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1635272773, now seen corresponding path program 13 times [2022-03-03 20:18:47,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:47,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704995770] [2022-03-03 20:18:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:47,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:47,510 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:47,510 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704995770] [2022-03-03 20:18:47,510 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704995770] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:47,511 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:47,511 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-03 20:18:47,511 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248313730] [2022-03-03 20:18:47,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:47,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-03 20:18:47,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-03 20:18:47,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-03 20:18:47,512 INFO L87 Difference]: Start difference. First operand 83 states and 125 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:47,577 INFO L93 Difference]: Finished difference Result 87 states and 129 transitions. [2022-03-03 20:18:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-03 20:18:47,578 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:47,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:47,578 INFO L225 Difference]: With dead ends: 87 [2022-03-03 20:18:47,578 INFO L226 Difference]: Without dead ends: 73 [2022-03-03 20:18:47,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2022-03-03 20:18:47,579 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 82 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:47,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 98 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:47,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-03 20:18:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-03-03 20:18:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 72 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 110 transitions. [2022-03-03 20:18:47,580 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 110 transitions. Word has length 31 [2022-03-03 20:18:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:47,581 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 110 transitions. [2022-03-03 20:18:47,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,581 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 110 transitions. [2022-03-03 20:18:47,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-03 20:18:47,581 INFO L506 BasicCegarLoop]: Found error trace [2022-03-03 20:18:47,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-03 20:18:47,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-03-03 20:18:47,581 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-03 20:18:47,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-03 20:18:47,582 INFO L85 PathProgramCache]: Analyzing trace with hash 836232753, now seen corresponding path program 14 times [2022-03-03 20:18:47,582 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-03 20:18:47,582 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949070780] [2022-03-03 20:18:47,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-03 20:18:47,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-03 20:18:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-03 20:18:47,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-03 20:18:47,613 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-03 20:18:47,613 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949070780] [2022-03-03 20:18:47,613 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949070780] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-03 20:18:47,613 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-03 20:18:47,613 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-03 20:18:47,613 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734254179] [2022-03-03 20:18:47,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-03 20:18:47,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-03 20:18:47,614 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-03 20:18:47,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-03 20:18:47,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-03-03 20:18:47,614 INFO L87 Difference]: Start difference. First operand 73 states and 110 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-03 20:18:47,641 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-03-03 20:18:47,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-03 20:18:47,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-03 20:18:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-03 20:18:47,642 INFO L225 Difference]: With dead ends: 43 [2022-03-03 20:18:47,642 INFO L226 Difference]: Without dead ends: 0 [2022-03-03 20:18:47,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-03-03 20:18:47,642 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-03 20:18:47,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 46 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-03 20:18:47,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-03 20:18:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-03 20:18:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-03 20:18:47,643 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2022-03-03 20:18:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-03 20:18:47,643 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-03 20:18:47,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-03 20:18:47,644 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-03 20:18:47,644 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-03 20:18:47,645 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (2 of 3 remaining) [2022-03-03 20:18:47,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-03 20:18:47,646 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-03 20:18:47,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-03-03 20:18:47,648 INFO L732 BasicCegarLoop]: Path program histogram: [14] [2022-03-03 20:18:47,649 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-03 20:18:47,649 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-03 20:18:47,651 INFO L202 PluginConnector]: Adding new model easy6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 08:18:47 BasicIcfg [2022-03-03 20:18:47,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-03 20:18:47,667 INFO L158 Benchmark]: Toolchain (without parser) took 2965.80ms. Allocated memory was 194.0MB in the beginning and 282.1MB in the end (delta: 88.1MB). Free memory was 159.0MB in the beginning and 149.9MB in the end (delta: 9.1MB). Peak memory consumption was 96.7MB. Max. memory is 8.0GB. [2022-03-03 20:18:47,668 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-03 20:18:47,668 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.05ms. Allocated memory is still 194.0MB. Free memory was 159.0MB in the beginning and 157.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-03 20:18:47,668 INFO L158 Benchmark]: Boogie Preprocessor took 9.84ms. Allocated memory is still 194.0MB. Free memory was 157.4MB in the beginning and 156.5MB in the end (delta: 943.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-03 20:18:47,668 INFO L158 Benchmark]: RCFGBuilder took 209.69ms. Allocated memory is still 194.0MB. Free memory was 156.5MB in the beginning and 147.5MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-03 20:18:47,668 INFO L158 Benchmark]: TraceAbstraction took 2708.05ms. Allocated memory was 194.0MB in the beginning and 282.1MB in the end (delta: 88.1MB). Free memory was 147.0MB in the beginning and 149.9MB in the end (delta: -2.8MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. [2022-03-03 20:18:47,669 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 194.0MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 19.05ms. Allocated memory is still 194.0MB. Free memory was 159.0MB in the beginning and 157.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.84ms. Allocated memory is still 194.0MB. Free memory was 157.4MB in the beginning and 156.5MB in the end (delta: 943.0kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 209.69ms. Allocated memory is still 194.0MB. Free memory was 156.5MB in the beginning and 147.5MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 2708.05ms. Allocated memory was 194.0MB in the beginning and 282.1MB in the end (delta: 88.1MB). Free memory was 147.0MB in the beginning and 149.9MB in the end (delta: -2.8MB). Peak memory consumption was 84.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 60]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 60 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.6s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1311 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 1821 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1591 mSDsCounter, 162 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 898 IncrementalHoareTripleChecker+Invalid, 1060 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 162 mSolverCounterUnsat, 470 mSDtfsCounter, 898 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 161 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred in iteration=0, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 583 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 420 ConstructedInterpolants, 0 QuantifiedInterpolants, 1634 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-03 20:18:47,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...