/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-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:54:36,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:54:36,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:54:36,950 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:54:37,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-06 19:54:37,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-06 19:54:37,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-06 19:54:37,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-06 19:54:37,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-06 19:54:37,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-06 19:54:37,217 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-06 19:54:37,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-06 19:54:37,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-06 19:54:37,218 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-06 19:54:37,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-06 19:54:37,219 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-Delay.epf [2021-08-06 19:54:37,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:54:37,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:54:37,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:54:37,246 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:54:37,247 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:54:37,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:54:37,247 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:54:37,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:54:37,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:54:37,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:54:37,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:54:37,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:54:37,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:54:37,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:54:37,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:54:37,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:54:37,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:54:37,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:54:37,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:54:37,251 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:54:37,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:54:37,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:54:37,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:54:37,577 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:54:37,578 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 19:54:37,579 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 19:54:37,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl [2021-08-06 19:54:37,580 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-6.wvr.bpl' [2021-08-06 19:54:37,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:54:37,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 19:54:37,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:54:37,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:54:37,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:54:37,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:54:37,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:54:37,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:54:37,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:54:37,662 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:54:37,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:54:37,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:54:37,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:54:37,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/1) ... [2021-08-06 19:54:37,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:54:37,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:54:37,694 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) [2021-08-06 19:54:37,716 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 [2021-08-06 19:54:37,732 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 19:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 19:54:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 19:54:37,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 19:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 19:54:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 19:54:37,733 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 19:54:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:54:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:54:37,734 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-06 19:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-06 19:54:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-06 19:54:37,734 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-06 19:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-06 19:54:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-06 19:54:37,734 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-06 19:54:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-06 19:54:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-06 19:54:37,735 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-08-06 19:54:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-08-06 19:54:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-08-06 19:54:37,736 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-06 19:54:37,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:54:37,935 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 19:54:37,937 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:54:37 BoogieIcfgContainer [2021-08-06 19:54:37,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:54:37,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:54:37,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:54:37,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:54:37,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:37" (1/2) ... [2021-08-06 19:54:37,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478cb0ec and model type ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:54:37, skipping insertion in model container [2021-08-06 19:54:37,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:54:37" (2/2) ... [2021-08-06 19:54:37,943 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-6.wvr.bpl [2021-08-06 19:54:37,947 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:54:37,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:54:37,948 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:54:37,948 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:54:38,005 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-08-06 19:54:38,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:54:38,045 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-06 19:54:38,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-08-06 19:54:44,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 74652 states, 57286 states have (on average 3.317773976189645) internal successors, (190062), 74651 states have internal predecessors, (190062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:54:45,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:45,528 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:54:45,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:54:45,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:45,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1815472100, now seen corresponding path program 1 times [2021-08-06 19:54:45,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:45,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963138349] [2021-08-06 19:54:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:45,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:54:45,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:45,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963138349] [2021-08-06 19:54:45,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963138349] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:45,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:45,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:54:45,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085745389] [2021-08-06 19:54:45,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:54:45,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:54:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:45,978 INFO L87 Difference]: Start difference. First operand has 74652 states, 57286 states have (on average 3.317773976189645) internal successors, (190062), 74651 states have internal predecessors, (190062), 0 states have call successors, (0), 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 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:48,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:48,324 INFO L93 Difference]: Finished difference Result 179851 states and 464392 transitions. [2021-08-06 19:54:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 19:54:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:54:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:49,156 INFO L225 Difference]: With dead ends: 179851 [2021-08-06 19:54:49,157 INFO L226 Difference]: Without dead ends: 76237 [2021-08-06 19:54:49,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:54:49,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76237 states. [2021-08-06 19:54:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76237 to 36491. [2021-08-06 19:54:52,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36491 states, 36490 states have (on average 3.607563716086599) internal successors, (131640), 36490 states have internal predecessors, (131640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36491 states to 36491 states and 131640 transitions. [2021-08-06 19:54:52,943 INFO L78 Accepts]: Start accepts. Automaton has 36491 states and 131640 transitions. Word has length 46 [2021-08-06 19:54:52,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:52,944 INFO L470 AbstractCegarLoop]: Abstraction has 36491 states and 131640 transitions. [2021-08-06 19:54:52,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:52,945 INFO L276 IsEmpty]: Start isEmpty. Operand 36491 states and 131640 transitions. [2021-08-06 19:54:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:54:53,212 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:53,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:54:53,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:54:53,230 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:54:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:53,232 INFO L82 PathProgramCache]: Analyzing trace with hash 521168352, now seen corresponding path program 2 times [2021-08-06 19:54:53,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:53,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364971454] [2021-08-06 19:54:53,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:53,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:53,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:54:53,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:53,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364971454] [2021-08-06 19:54:53,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364971454] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:53,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:53,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:54:53,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982946260] [2021-08-06 19:54:53,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:54:53,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:53,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:54:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:54:53,412 INFO L87 Difference]: Start difference. First operand 36491 states and 131640 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:55,260 INFO L93 Difference]: Finished difference Result 110934 states and 381289 transitions. [2021-08-06 19:54:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:54:55,268 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:54:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:55,936 INFO L225 Difference]: With dead ends: 110934 [2021-08-06 19:54:55,936 INFO L226 Difference]: Without dead ends: 110934 [2021-08-06 19:54:55,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:54:56,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110934 states. [2021-08-06 19:54:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110934 to 52692. [2021-08-06 19:54:58,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52692 states, 52691 states have (on average 3.471560608073485) internal successors, (182920), 52691 states have internal predecessors, (182920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52692 states to 52692 states and 182920 transitions. [2021-08-06 19:54:59,075 INFO L78 Accepts]: Start accepts. Automaton has 52692 states and 182920 transitions. Word has length 46 [2021-08-06 19:54:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:59,076 INFO L470 AbstractCegarLoop]: Abstraction has 52692 states and 182920 transitions. [2021-08-06 19:54:59,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 52692 states and 182920 transitions. [2021-08-06 19:54:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:54:59,321 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:59,322 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:54:59,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:54:59,322 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:54:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:59,323 INFO L82 PathProgramCache]: Analyzing trace with hash 632260064, now seen corresponding path program 3 times [2021-08-06 19:54:59,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:59,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701886492] [2021-08-06 19:54:59,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:59,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:59,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:59,392 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 9, result has 57.1 percent of original size [2021-08-06 19:54:59,397 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 9, result has 57.1 percent of original size [2021-08-06 19:54:59,411 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,413 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,423 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 8, result has 42.9 percent of original size [2021-08-06 19:54:59,427 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 8, result has 42.9 percent of original size [2021-08-06 19:54:59,433 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,434 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,444 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,445 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:59,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:54:59,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:59,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701886492] [2021-08-06 19:54:59,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701886492] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:59,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:59,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:54:59,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022954524] [2021-08-06 19:54:59,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:54:59,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:54:59,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:59,495 INFO L87 Difference]: Start difference. First operand 52692 states and 182920 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:00,322 INFO L93 Difference]: Finished difference Result 82651 states and 288984 transitions. [2021-08-06 19:55:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 19:55:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:00,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:00,537 INFO L225 Difference]: With dead ends: 82651 [2021-08-06 19:55:00,537 INFO L226 Difference]: Without dead ends: 56875 [2021-08-06 19:55:00,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.1ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:55:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56875 states. [2021-08-06 19:55:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56875 to 55735. [2021-08-06 19:55:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55735 states, 55734 states have (on average 3.4310654178777766) internal successors, (191227), 55734 states have internal predecessors, (191227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:02,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55735 states to 55735 states and 191227 transitions. [2021-08-06 19:55:02,490 INFO L78 Accepts]: Start accepts. Automaton has 55735 states and 191227 transitions. Word has length 46 [2021-08-06 19:55:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:02,491 INFO L470 AbstractCegarLoop]: Abstraction has 55735 states and 191227 transitions. [2021-08-06 19:55:02,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:02,491 INFO L276 IsEmpty]: Start isEmpty. Operand 55735 states and 191227 transitions. [2021-08-06 19:55:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:02,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:02,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:02,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:55:02,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:02,635 INFO L82 PathProgramCache]: Analyzing trace with hash 732034430, now seen corresponding path program 4 times [2021-08-06 19:55:02,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:02,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456241649] [2021-08-06 19:55:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:02,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:02,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:02,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456241649] [2021-08-06 19:55:02,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456241649] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:02,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:02,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:55:02,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683170806] [2021-08-06 19:55:02,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:55:02,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:55:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:55:02,725 INFO L87 Difference]: Start difference. First operand 55735 states and 191227 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:03,765 INFO L93 Difference]: Finished difference Result 107238 states and 350506 transitions. [2021-08-06 19:55:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:55:03,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:04,458 INFO L225 Difference]: With dead ends: 107238 [2021-08-06 19:55:04,458 INFO L226 Difference]: Without dead ends: 106546 [2021-08-06 19:55:04,459 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:55:04,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106546 states. [2021-08-06 19:55:06,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106546 to 61897. [2021-08-06 19:55:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61897 states, 61896 states have (on average 3.3264831329972857) internal successors, (205896), 61896 states have internal predecessors, (205896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:07,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61897 states to 61897 states and 205896 transitions. [2021-08-06 19:55:07,031 INFO L78 Accepts]: Start accepts. Automaton has 61897 states and 205896 transitions. Word has length 46 [2021-08-06 19:55:07,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:07,031 INFO L470 AbstractCegarLoop]: Abstraction has 61897 states and 205896 transitions. [2021-08-06 19:55:07,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:07,032 INFO L276 IsEmpty]: Start isEmpty. Operand 61897 states and 205896 transitions. [2021-08-06 19:55:07,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:07,177 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:07,177 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:07,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:55:07,178 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:07,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:07,178 INFO L82 PathProgramCache]: Analyzing trace with hash 455411232, now seen corresponding path program 5 times [2021-08-06 19:55:07,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:07,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351793812] [2021-08-06 19:55:07,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:07,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:07,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:07,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:07,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351793812] [2021-08-06 19:55:07,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351793812] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:07,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:07,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:55:07,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183751119] [2021-08-06 19:55:07,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:55:07,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:07,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:55:07,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:55:07,264 INFO L87 Difference]: Start difference. First operand 61897 states and 205896 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:08,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:08,863 INFO L93 Difference]: Finished difference Result 134802 states and 434362 transitions. [2021-08-06 19:55:08,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:55:08,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:08,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:09,425 INFO L225 Difference]: With dead ends: 134802 [2021-08-06 19:55:09,426 INFO L226 Difference]: Without dead ends: 130652 [2021-08-06 19:55:09,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 79.0ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:55:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130652 states. [2021-08-06 19:55:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130652 to 65003. [2021-08-06 19:55:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65003 states, 65002 states have (on average 3.288421894710932) internal successors, (213754), 65002 states have internal predecessors, (213754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65003 states to 65003 states and 213754 transitions. [2021-08-06 19:55:12,208 INFO L78 Accepts]: Start accepts. Automaton has 65003 states and 213754 transitions. Word has length 46 [2021-08-06 19:55:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:12,208 INFO L470 AbstractCegarLoop]: Abstraction has 65003 states and 213754 transitions. [2021-08-06 19:55:12,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 65003 states and 213754 transitions. [2021-08-06 19:55:12,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:12,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:12,757 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:12,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:55:12,757 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:12,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:12,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1226988724, now seen corresponding path program 6 times [2021-08-06 19:55:12,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:12,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070787032] [2021-08-06 19:55:12,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:12,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:12,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:12,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070787032] [2021-08-06 19:55:12,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070787032] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:12,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:12,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:55:12,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739825236] [2021-08-06 19:55:12,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:55:12,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:12,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:55:12,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:55:12,839 INFO L87 Difference]: Start difference. First operand 65003 states and 213754 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:13,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:13,998 INFO L93 Difference]: Finished difference Result 122835 states and 384888 transitions. [2021-08-06 19:55:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:55:13,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:13,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:14,448 INFO L225 Difference]: With dead ends: 122835 [2021-08-06 19:55:14,448 INFO L226 Difference]: Without dead ends: 122663 [2021-08-06 19:55:14,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.3ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:55:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122663 states. [2021-08-06 19:55:16,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122663 to 72294. [2021-08-06 19:55:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72294 states, 72293 states have (on average 3.1979998063436295) internal successors, (231193), 72293 states have internal predecessors, (231193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:17,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72294 states to 72294 states and 231193 transitions. [2021-08-06 19:55:17,384 INFO L78 Accepts]: Start accepts. Automaton has 72294 states and 231193 transitions. Word has length 46 [2021-08-06 19:55:17,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:17,385 INFO L470 AbstractCegarLoop]: Abstraction has 72294 states and 231193 transitions. [2021-08-06 19:55:17,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:17,385 INFO L276 IsEmpty]: Start isEmpty. Operand 72294 states and 231193 transitions. [2021-08-06 19:55:17,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:17,559 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:17,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:17,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:55:17,560 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 973441794, now seen corresponding path program 7 times [2021-08-06 19:55:17,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:17,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316983053] [2021-08-06 19:55:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:17,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:17,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:17,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:17,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316983053] [2021-08-06 19:55:17,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316983053] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:17,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:17,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:55:17,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581166635] [2021-08-06 19:55:17,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:55:17,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:17,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:55:17,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:55:17,678 INFO L87 Difference]: Start difference. First operand 72294 states and 231193 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:19,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:19,350 INFO L93 Difference]: Finished difference Result 149524 states and 465786 transitions. [2021-08-06 19:55:19,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:55:19,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:19,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:19,987 INFO L225 Difference]: With dead ends: 149524 [2021-08-06 19:55:19,987 INFO L226 Difference]: Without dead ends: 148304 [2021-08-06 19:55:19,988 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:55:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148304 states. [2021-08-06 19:55:22,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148304 to 78358. [2021-08-06 19:55:22,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78358 states, 78357 states have (on average 3.1656393174828032) internal successors, (248050), 78357 states have internal predecessors, (248050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:23,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78358 states to 78358 states and 248050 transitions. [2021-08-06 19:55:23,480 INFO L78 Accepts]: Start accepts. Automaton has 78358 states and 248050 transitions. Word has length 46 [2021-08-06 19:55:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:23,480 INFO L470 AbstractCegarLoop]: Abstraction has 78358 states and 248050 transitions. [2021-08-06 19:55:23,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:23,481 INFO L276 IsEmpty]: Start isEmpty. Operand 78358 states and 248050 transitions. [2021-08-06 19:55:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:23,975 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:23,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:23,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:55:23,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:23,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:23,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1668034304, now seen corresponding path program 8 times [2021-08-06 19:55:23,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:23,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799698362] [2021-08-06 19:55:23,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:23,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:24,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:24,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799698362] [2021-08-06 19:55:24,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799698362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:24,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:24,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:55:24,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559146156] [2021-08-06 19:55:24,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:55:24,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:24,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:55:24,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:55:24,175 INFO L87 Difference]: Start difference. First operand 78358 states and 248050 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:25,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:25,892 INFO L93 Difference]: Finished difference Result 144725 states and 452001 transitions. [2021-08-06 19:55:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:55:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:25,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:26,817 INFO L225 Difference]: With dead ends: 144725 [2021-08-06 19:55:26,818 INFO L226 Difference]: Without dead ends: 144169 [2021-08-06 19:55:26,818 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 92.0ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:55:27,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144169 states. [2021-08-06 19:55:29,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144169 to 76976. [2021-08-06 19:55:29,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76976 states, 76975 states have (on average 3.1607664826242288) internal successors, (243300), 76975 states have internal predecessors, (243300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76976 states to 76976 states and 243300 transitions. [2021-08-06 19:55:29,749 INFO L78 Accepts]: Start accepts. Automaton has 76976 states and 243300 transitions. Word has length 46 [2021-08-06 19:55:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:29,751 INFO L470 AbstractCegarLoop]: Abstraction has 76976 states and 243300 transitions. [2021-08-06 19:55:29,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 76976 states and 243300 transitions. [2021-08-06 19:55:29,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:29,916 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:29,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:29,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:55:29,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:29,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:29,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1262854370, now seen corresponding path program 9 times [2021-08-06 19:55:29,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:29,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33326369] [2021-08-06 19:55:29,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:29,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:30,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:30,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33326369] [2021-08-06 19:55:30,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33326369] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:30,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:30,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:55:30,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724229451] [2021-08-06 19:55:30,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:55:30,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:30,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:55:30,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:55:30,411 INFO L87 Difference]: Start difference. First operand 76976 states and 243300 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:31,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:31,828 INFO L93 Difference]: Finished difference Result 147525 states and 459236 transitions. [2021-08-06 19:55:31,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:55:31,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:32,712 INFO L225 Difference]: With dead ends: 147525 [2021-08-06 19:55:32,712 INFO L226 Difference]: Without dead ends: 146789 [2021-08-06 19:55:32,713 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 488.5ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:55:32,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146789 states. [2021-08-06 19:55:35,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146789 to 81089. [2021-08-06 19:55:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81089 states, 81088 states have (on average 3.1384915153906867) internal successors, (254494), 81088 states have internal predecessors, (254494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:35,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81089 states to 81089 states and 254494 transitions. [2021-08-06 19:55:35,685 INFO L78 Accepts]: Start accepts. Automaton has 81089 states and 254494 transitions. Word has length 46 [2021-08-06 19:55:35,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:35,686 INFO L470 AbstractCegarLoop]: Abstraction has 81089 states and 254494 transitions. [2021-08-06 19:55:35,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:35,686 INFO L276 IsEmpty]: Start isEmpty. Operand 81089 states and 254494 transitions. [2021-08-06 19:55:36,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:36,254 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:36,254 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:36,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:55:36,254 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:36,255 INFO L82 PathProgramCache]: Analyzing trace with hash -623557344, now seen corresponding path program 10 times [2021-08-06 19:55:36,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:36,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70035374] [2021-08-06 19:55:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:36,255 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:36,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:36,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:36,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70035374] [2021-08-06 19:55:36,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70035374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:36,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:36,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:55:36,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255628734] [2021-08-06 19:55:36,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:55:36,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:36,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:55:36,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:55:36,365 INFO L87 Difference]: Start difference. First operand 81089 states and 254494 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:37,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:37,810 INFO L93 Difference]: Finished difference Result 152811 states and 467116 transitions. [2021-08-06 19:55:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:55:37,810 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:37,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:38,746 INFO L225 Difference]: With dead ends: 152811 [2021-08-06 19:55:38,747 INFO L226 Difference]: Without dead ends: 149833 [2021-08-06 19:55:38,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 76.3ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:55:39,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149833 states. [2021-08-06 19:55:41,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149833 to 79617. [2021-08-06 19:55:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79617 states, 79616 states have (on average 3.129056973472669) internal successors, (249123), 79616 states have internal predecessors, (249123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:41,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79617 states to 79617 states and 249123 transitions. [2021-08-06 19:55:41,698 INFO L78 Accepts]: Start accepts. Automaton has 79617 states and 249123 transitions. Word has length 46 [2021-08-06 19:55:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:41,698 INFO L470 AbstractCegarLoop]: Abstraction has 79617 states and 249123 transitions. [2021-08-06 19:55:41,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 79617 states and 249123 transitions. [2021-08-06 19:55:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:41,867 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:41,867 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:41,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 19:55:41,867 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:41,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1017655614, now seen corresponding path program 11 times [2021-08-06 19:55:41,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:41,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763431110] [2021-08-06 19:55:41,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:41,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:42,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:42,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:42,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763431110] [2021-08-06 19:55:42,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763431110] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:42,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:42,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:55:42,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061603355] [2021-08-06 19:55:42,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:55:42,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:42,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:55:42,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:55:42,390 INFO L87 Difference]: Start difference. First operand 79617 states and 249123 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:43,780 INFO L93 Difference]: Finished difference Result 154429 states and 469106 transitions. [2021-08-06 19:55:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:55:43,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:44,692 INFO L225 Difference]: With dead ends: 154429 [2021-08-06 19:55:44,692 INFO L226 Difference]: Without dead ends: 150158 [2021-08-06 19:55:44,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 140.7ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:55:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150158 states. [2021-08-06 19:55:47,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150158 to 79870. [2021-08-06 19:55:47,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79870 states, 79869 states have (on average 3.11828118544116) internal successors, (249054), 79869 states have internal predecessors, (249054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79870 states to 79870 states and 249054 transitions. [2021-08-06 19:55:47,632 INFO L78 Accepts]: Start accepts. Automaton has 79870 states and 249054 transitions. Word has length 46 [2021-08-06 19:55:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:47,632 INFO L470 AbstractCegarLoop]: Abstraction has 79870 states and 249054 transitions. [2021-08-06 19:55:47,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 79870 states and 249054 transitions. [2021-08-06 19:55:47,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:47,804 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:47,805 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:47,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 19:55:47,805 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:47,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1225966402, now seen corresponding path program 12 times [2021-08-06 19:55:47,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:47,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861394757] [2021-08-06 19:55:47,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:47,806 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:48,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:48,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:48,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861394757] [2021-08-06 19:55:48,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861394757] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:48,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:48,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:55:48,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775185381] [2021-08-06 19:55:48,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:55:48,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:48,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:55:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:55:48,332 INFO L87 Difference]: Start difference. First operand 79870 states and 249054 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:49,664 INFO L93 Difference]: Finished difference Result 154983 states and 475200 transitions. [2021-08-06 19:55:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:55:49,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:49,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:50,586 INFO L225 Difference]: With dead ends: 154983 [2021-08-06 19:55:50,586 INFO L226 Difference]: Without dead ends: 154215 [2021-08-06 19:55:50,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 82.4ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:55:50,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154215 states. [2021-08-06 19:55:53,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154215 to 78092. [2021-08-06 19:55:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78092 states, 78091 states have (on average 3.112778681282094) internal successors, (243080), 78091 states have internal predecessors, (243080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78092 states to 78092 states and 243080 transitions. [2021-08-06 19:55:53,590 INFO L78 Accepts]: Start accepts. Automaton has 78092 states and 243080 transitions. Word has length 46 [2021-08-06 19:55:53,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:55:53,590 INFO L470 AbstractCegarLoop]: Abstraction has 78092 states and 243080 transitions. [2021-08-06 19:55:53,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:53,591 INFO L276 IsEmpty]: Start isEmpty. Operand 78092 states and 243080 transitions. [2021-08-06 19:55:53,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:55:53,764 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:55:53,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:55:53,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 19:55:53,764 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:55:53,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:55:53,764 INFO L82 PathProgramCache]: Analyzing trace with hash -276140512, now seen corresponding path program 13 times [2021-08-06 19:55:53,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:55:53,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122484877] [2021-08-06 19:55:53,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:55:53,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:55:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:55:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:55:53,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:55:53,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122484877] [2021-08-06 19:55:53,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122484877] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:55:53,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:55:53,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:55:53,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102745439] [2021-08-06 19:55:53,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:55:53,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:55:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:55:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:55:53,848 INFO L87 Difference]: Start difference. First operand 78092 states and 243080 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:55:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:55:56,050 INFO L93 Difference]: Finished difference Result 156927 states and 479942 transitions. [2021-08-06 19:55:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:55:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:55:56,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:55:57,075 INFO L225 Difference]: With dead ends: 156927 [2021-08-06 19:55:57,075 INFO L226 Difference]: Without dead ends: 155764 [2021-08-06 19:55:57,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 522.8ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:55:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155764 states. [2021-08-06 19:55:59,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155764 to 80656. [2021-08-06 19:55:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80656 states, 80655 states have (on average 3.108114809993181) internal successors, (250685), 80655 states have internal predecessors, (250685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80656 states to 80656 states and 250685 transitions. [2021-08-06 19:56:00,546 INFO L78 Accepts]: Start accepts. Automaton has 80656 states and 250685 transitions. Word has length 46 [2021-08-06 19:56:00,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:00,546 INFO L470 AbstractCegarLoop]: Abstraction has 80656 states and 250685 transitions. [2021-08-06 19:56:00,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:00,546 INFO L276 IsEmpty]: Start isEmpty. Operand 80656 states and 250685 transitions. [2021-08-06 19:56:00,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:00,743 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:00,744 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:00,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 19:56:00,744 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:00,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:00,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1947370086, now seen corresponding path program 14 times [2021-08-06 19:56:00,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:00,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330929422] [2021-08-06 19:56:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:00,745 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:00,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:00,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330929422] [2021-08-06 19:56:00,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330929422] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:00,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:00,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:56:00,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345492761] [2021-08-06 19:56:00,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:56:00,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:56:00,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:56:00,812 INFO L87 Difference]: Start difference. First operand 80656 states and 250685 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:02,414 INFO L93 Difference]: Finished difference Result 165417 states and 504444 transitions. [2021-08-06 19:56:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:56:02,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:03,119 INFO L225 Difference]: With dead ends: 165417 [2021-08-06 19:56:03,120 INFO L226 Difference]: Without dead ends: 165417 [2021-08-06 19:56:03,120 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:56:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165417 states. [2021-08-06 19:56:05,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165417 to 79912. [2021-08-06 19:56:05,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79912 states, 79911 states have (on average 3.089086608852348) internal successors, (246852), 79911 states have internal predecessors, (246852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:06,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79912 states to 79912 states and 246852 transitions. [2021-08-06 19:56:06,669 INFO L78 Accepts]: Start accepts. Automaton has 79912 states and 246852 transitions. Word has length 46 [2021-08-06 19:56:06,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:06,669 INFO L470 AbstractCegarLoop]: Abstraction has 79912 states and 246852 transitions. [2021-08-06 19:56:06,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:06,669 INFO L276 IsEmpty]: Start isEmpty. Operand 79912 states and 246852 transitions. [2021-08-06 19:56:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:06,864 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:06,864 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 19:56:06,865 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:06,865 INFO L82 PathProgramCache]: Analyzing trace with hash 389270366, now seen corresponding path program 15 times [2021-08-06 19:56:06,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:06,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614272779] [2021-08-06 19:56:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:06,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:06,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:06,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:06,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614272779] [2021-08-06 19:56:06,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614272779] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:06,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:06,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:56:06,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101637963] [2021-08-06 19:56:06,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:56:06,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:06,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:56:06,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:56:06,949 INFO L87 Difference]: Start difference. First operand 79912 states and 246852 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:09,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:09,054 INFO L93 Difference]: Finished difference Result 173347 states and 522080 transitions. [2021-08-06 19:56:09,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:56:09,054 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:09,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:09,771 INFO L225 Difference]: With dead ends: 173347 [2021-08-06 19:56:09,771 INFO L226 Difference]: Without dead ends: 173123 [2021-08-06 19:56:09,772 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 69.8ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:56:10,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173123 states. [2021-08-06 19:56:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173123 to 79075. [2021-08-06 19:56:12,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79075 states, 79074 states have (on average 3.069782735159471) internal successors, (242740), 79074 states have internal predecessors, (242740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:13,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79075 states to 79075 states and 242740 transitions. [2021-08-06 19:56:13,245 INFO L78 Accepts]: Start accepts. Automaton has 79075 states and 242740 transitions. Word has length 46 [2021-08-06 19:56:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:13,245 INFO L470 AbstractCegarLoop]: Abstraction has 79075 states and 242740 transitions. [2021-08-06 19:56:13,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 79075 states and 242740 transitions. [2021-08-06 19:56:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:13,415 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:13,415 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:13,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 19:56:13,415 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:13,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1624468260, now seen corresponding path program 16 times [2021-08-06 19:56:13,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:13,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631166166] [2021-08-06 19:56:13,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:13,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:13,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:13,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631166166] [2021-08-06 19:56:13,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631166166] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:13,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:13,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:56:13,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420020053] [2021-08-06 19:56:13,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:56:13,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:13,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:56:13,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:56:13,472 INFO L87 Difference]: Start difference. First operand 79075 states and 242740 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:15,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:15,001 INFO L93 Difference]: Finished difference Result 168892 states and 500363 transitions. [2021-08-06 19:56:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:56:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:15,679 INFO L225 Difference]: With dead ends: 168892 [2021-08-06 19:56:15,679 INFO L226 Difference]: Without dead ends: 167956 [2021-08-06 19:56:15,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:56:16,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167956 states. [2021-08-06 19:56:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167956 to 77500. [2021-08-06 19:56:18,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77500 states, 77499 states have (on average 3.038981148143847) internal successors, (235518), 77499 states have internal predecessors, (235518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:19,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77500 states to 77500 states and 235518 transitions. [2021-08-06 19:56:19,012 INFO L78 Accepts]: Start accepts. Automaton has 77500 states and 235518 transitions. Word has length 46 [2021-08-06 19:56:19,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:19,012 INFO L470 AbstractCegarLoop]: Abstraction has 77500 states and 235518 transitions. [2021-08-06 19:56:19,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 77500 states and 235518 transitions. [2021-08-06 19:56:19,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:19,200 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:19,200 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:19,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 19:56:19,200 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:19,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1901091458, now seen corresponding path program 17 times [2021-08-06 19:56:19,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:19,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272176152] [2021-08-06 19:56:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:19,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:19,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:19,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:19,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272176152] [2021-08-06 19:56:19,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272176152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:19,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:19,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:56:19,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913134882] [2021-08-06 19:56:19,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:56:19,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:19,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:56:19,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:56:19,282 INFO L87 Difference]: Start difference. First operand 77500 states and 235518 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:20,942 INFO L93 Difference]: Finished difference Result 163656 states and 482961 transitions. [2021-08-06 19:56:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:56:20,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:21,593 INFO L225 Difference]: With dead ends: 163656 [2021-08-06 19:56:21,593 INFO L226 Difference]: Without dead ends: 160270 [2021-08-06 19:56:21,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:56:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160270 states. [2021-08-06 19:56:24,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160270 to 75558. [2021-08-06 19:56:24,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75558 states, 75557 states have (on average 3.0353772648464075) internal successors, (229344), 75557 states have internal predecessors, (229344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:24,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75558 states to 75558 states and 229344 transitions. [2021-08-06 19:56:24,975 INFO L78 Accepts]: Start accepts. Automaton has 75558 states and 229344 transitions. Word has length 46 [2021-08-06 19:56:24,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:24,975 INFO L470 AbstractCegarLoop]: Abstraction has 75558 states and 229344 transitions. [2021-08-06 19:56:24,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:24,975 INFO L276 IsEmpty]: Start isEmpty. Operand 75558 states and 229344 transitions. [2021-08-06 19:56:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:25,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:25,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:25,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-06 19:56:25,429 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:25,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:25,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1129513966, now seen corresponding path program 18 times [2021-08-06 19:56:25,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:25,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031679524] [2021-08-06 19:56:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:25,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:25,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:25,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031679524] [2021-08-06 19:56:25,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031679524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:25,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:25,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:56:25,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145183139] [2021-08-06 19:56:25,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:56:25,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:25,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:56:25,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:56:25,541 INFO L87 Difference]: Start difference. First operand 75558 states and 229344 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:27,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:27,062 INFO L93 Difference]: Finished difference Result 170124 states and 506628 transitions. [2021-08-06 19:56:27,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:56:27,062 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:27,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:28,065 INFO L225 Difference]: With dead ends: 170124 [2021-08-06 19:56:28,065 INFO L226 Difference]: Without dead ends: 169900 [2021-08-06 19:56:28,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:56:28,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169900 states. [2021-08-06 19:56:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169900 to 75416. [2021-08-06 19:56:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75416 states, 75415 states have (on average 3.028919976132069) internal successors, (228426), 75415 states have internal predecessors, (228426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75416 states to 75416 states and 228426 transitions. [2021-08-06 19:56:31,005 INFO L78 Accepts]: Start accepts. Automaton has 75416 states and 228426 transitions. Word has length 46 [2021-08-06 19:56:31,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:31,006 INFO L470 AbstractCegarLoop]: Abstraction has 75416 states and 228426 transitions. [2021-08-06 19:56:31,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 75416 states and 228426 transitions. [2021-08-06 19:56:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:31,166 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:31,166 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:31,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 19:56:31,167 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:31,167 INFO L82 PathProgramCache]: Analyzing trace with hash -1383060896, now seen corresponding path program 19 times [2021-08-06 19:56:31,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:31,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611254480] [2021-08-06 19:56:31,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:31,167 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:31,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:31,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611254480] [2021-08-06 19:56:31,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611254480] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:31,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:31,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:56:31,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741798709] [2021-08-06 19:56:31,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:56:31,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:31,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:56:31,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:56:31,239 INFO L87 Difference]: Start difference. First operand 75416 states and 228426 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:32,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:32,888 INFO L93 Difference]: Finished difference Result 163513 states and 487326 transitions. [2021-08-06 19:56:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:56:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:33,996 INFO L225 Difference]: With dead ends: 163513 [2021-08-06 19:56:34,012 INFO L226 Difference]: Without dead ends: 162630 [2021-08-06 19:56:34,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 71.6ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:56:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162630 states. [2021-08-06 19:56:36,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162630 to 73667. [2021-08-06 19:56:36,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73667 states, 73666 states have (on average 3.0383487633372246) internal successors, (223823), 73666 states have internal predecessors, (223823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73667 states to 73667 states and 223823 transitions. [2021-08-06 19:56:36,891 INFO L78 Accepts]: Start accepts. Automaton has 73667 states and 223823 transitions. Word has length 46 [2021-08-06 19:56:36,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:36,891 INFO L470 AbstractCegarLoop]: Abstraction has 73667 states and 223823 transitions. [2021-08-06 19:56:36,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:36,892 INFO L276 IsEmpty]: Start isEmpty. Operand 73667 states and 223823 transitions. [2021-08-06 19:56:37,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:37,048 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:37,048 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:37,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 19:56:37,048 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:37,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:37,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1335369374, now seen corresponding path program 20 times [2021-08-06 19:56:37,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:37,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619363403] [2021-08-06 19:56:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:37,049 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:37,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:37,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:37,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619363403] [2021-08-06 19:56:37,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619363403] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:37,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:37,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 19:56:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543575314] [2021-08-06 19:56:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 19:56:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:37,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 19:56:37,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-06 19:56:37,080 INFO L87 Difference]: Start difference. First operand 73667 states and 223823 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:37,798 INFO L93 Difference]: Finished difference Result 63257 states and 189169 transitions. [2021-08-06 19:56:37,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 19:56:37,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:38,019 INFO L225 Difference]: With dead ends: 63257 [2021-08-06 19:56:38,019 INFO L226 Difference]: Without dead ends: 63257 [2021-08-06 19:56:38,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:56:38,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63257 states. [2021-08-06 19:56:39,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63257 to 63065. [2021-08-06 19:56:39,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63065 states, 63064 states have (on average 2.9965907649372068) internal successors, (188977), 63064 states have internal predecessors, (188977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:39,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63065 states to 63065 states and 188977 transitions. [2021-08-06 19:56:39,567 INFO L78 Accepts]: Start accepts. Automaton has 63065 states and 188977 transitions. Word has length 46 [2021-08-06 19:56:39,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:39,567 INFO L470 AbstractCegarLoop]: Abstraction has 63065 states and 188977 transitions. [2021-08-06 19:56:39,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:39,568 INFO L276 IsEmpty]: Start isEmpty. Operand 63065 states and 188977 transitions. [2021-08-06 19:56:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:39,691 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:39,691 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:39,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 19:56:39,692 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:39,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:39,692 INFO L82 PathProgramCache]: Analyzing trace with hash 674172928, now seen corresponding path program 21 times [2021-08-06 19:56:39,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:39,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165364174] [2021-08-06 19:56:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:39,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:39,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:39,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:39,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165364174] [2021-08-06 19:56:39,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165364174] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:39,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:39,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:56:39,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871001869] [2021-08-06 19:56:39,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:56:39,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:39,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:56:39,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:56:39,780 INFO L87 Difference]: Start difference. First operand 63065 states and 188977 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:41,317 INFO L93 Difference]: Finished difference Result 123735 states and 362144 transitions. [2021-08-06 19:56:41,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:56:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:41,782 INFO L225 Difference]: With dead ends: 123735 [2021-08-06 19:56:41,783 INFO L226 Difference]: Without dead ends: 123371 [2021-08-06 19:56:41,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 397.5ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-06 19:56:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123371 states. [2021-08-06 19:56:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123371 to 63013. [2021-08-06 19:56:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63013 states, 63012 states have (on average 2.9941122325906178) internal successors, (188665), 63012 states have internal predecessors, (188665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:44,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63013 states to 63013 states and 188665 transitions. [2021-08-06 19:56:44,142 INFO L78 Accepts]: Start accepts. Automaton has 63013 states and 188665 transitions. Word has length 46 [2021-08-06 19:56:44,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:44,142 INFO L470 AbstractCegarLoop]: Abstraction has 63013 states and 188665 transitions. [2021-08-06 19:56:44,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 63013 states and 188665 transitions. [2021-08-06 19:56:44,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:44,275 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:44,276 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:44,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 19:56:44,276 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:44,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2038251550, now seen corresponding path program 22 times [2021-08-06 19:56:44,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:44,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833248562] [2021-08-06 19:56:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:44,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:44,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:44,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833248562] [2021-08-06 19:56:44,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833248562] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:44,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:44,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:56:44,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29576404] [2021-08-06 19:56:44,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:56:44,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:56:44,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:56:44,369 INFO L87 Difference]: Start difference. First operand 63013 states and 188665 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:45,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:45,625 INFO L93 Difference]: Finished difference Result 119129 states and 349458 transitions. [2021-08-06 19:56:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:56:45,626 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:46,318 INFO L225 Difference]: With dead ends: 119129 [2021-08-06 19:56:46,318 INFO L226 Difference]: Without dead ends: 118399 [2021-08-06 19:56:46,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 121.5ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:56:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118399 states. [2021-08-06 19:56:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118399 to 62435. [2021-08-06 19:56:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62435 states, 62434 states have (on average 2.988900278694301) internal successors, (186609), 62434 states have internal predecessors, (186609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62435 states to 62435 states and 186609 transitions. [2021-08-06 19:56:48,342 INFO L78 Accepts]: Start accepts. Automaton has 62435 states and 186609 transitions. Word has length 46 [2021-08-06 19:56:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:48,342 INFO L470 AbstractCegarLoop]: Abstraction has 62435 states and 186609 transitions. [2021-08-06 19:56:48,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 62435 states and 186609 transitions. [2021-08-06 19:56:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:48,471 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:48,471 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:48,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-06 19:56:48,471 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:48,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1406072734, now seen corresponding path program 23 times [2021-08-06 19:56:48,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:48,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082894686] [2021-08-06 19:56:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:48,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:48,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:48,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082894686] [2021-08-06 19:56:48,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082894686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:48,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:48,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:56:48,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998957965] [2021-08-06 19:56:48,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:56:48,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:56:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:56:48,955 INFO L87 Difference]: Start difference. First operand 62435 states and 186609 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:50,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:50,268 INFO L93 Difference]: Finished difference Result 119611 states and 350057 transitions. [2021-08-06 19:56:50,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 19:56:50,268 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:50,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:50,706 INFO L225 Difference]: With dead ends: 119611 [2021-08-06 19:56:50,707 INFO L226 Difference]: Without dead ends: 118753 [2021-08-06 19:56:50,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 522.8ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:56:51,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118753 states. [2021-08-06 19:56:52,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118753 to 63289. [2021-08-06 19:56:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63289 states, 63288 states have (on average 2.98290355201618) internal successors, (188782), 63288 states have internal predecessors, (188782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63289 states to 63289 states and 188782 transitions. [2021-08-06 19:56:52,976 INFO L78 Accepts]: Start accepts. Automaton has 63289 states and 188782 transitions. Word has length 46 [2021-08-06 19:56:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:52,976 INFO L470 AbstractCegarLoop]: Abstraction has 63289 states and 188782 transitions. [2021-08-06 19:56:52,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 63289 states and 188782 transitions. [2021-08-06 19:56:53,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:53,097 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:53,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:53,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-06 19:56:53,097 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:53,097 INFO L82 PathProgramCache]: Analyzing trace with hash -401236448, now seen corresponding path program 24 times [2021-08-06 19:56:53,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:53,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933142173] [2021-08-06 19:56:53,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:53,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:53,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:53,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:53,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933142173] [2021-08-06 19:56:53,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933142173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:53,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:53,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:56:53,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945089607] [2021-08-06 19:56:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:56:53,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:56:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:56:53,178 INFO L87 Difference]: Start difference. First operand 63289 states and 188782 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:54,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:56:54,846 INFO L93 Difference]: Finished difference Result 125338 states and 361402 transitions. [2021-08-06 19:56:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:56:54,847 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:56:54,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:56:55,828 INFO L225 Difference]: With dead ends: 125338 [2021-08-06 19:56:55,829 INFO L226 Difference]: Without dead ends: 123362 [2021-08-06 19:56:55,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 103.7ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-06 19:56:56,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123362 states. [2021-08-06 19:56:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123362 to 63631. [2021-08-06 19:56:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63631 states, 63630 states have (on average 2.979082193933679) internal successors, (189559), 63630 states have internal predecessors, (189559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:58,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63631 states to 63631 states and 189559 transitions. [2021-08-06 19:56:58,204 INFO L78 Accepts]: Start accepts. Automaton has 63631 states and 189559 transitions. Word has length 46 [2021-08-06 19:56:58,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:56:58,204 INFO L470 AbstractCegarLoop]: Abstraction has 63631 states and 189559 transitions. [2021-08-06 19:56:58,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:56:58,204 INFO L276 IsEmpty]: Start isEmpty. Operand 63631 states and 189559 transitions. [2021-08-06 19:56:58,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:56:58,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:56:58,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:56:58,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 19:56:58,714 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:56:58,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:56:58,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1239976510, now seen corresponding path program 25 times [2021-08-06 19:56:58,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:56:58,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693096264] [2021-08-06 19:56:58,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:56:58,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:56:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:56:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:56:58,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:56:58,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693096264] [2021-08-06 19:56:58,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693096264] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:56:58,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:56:58,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:56:58,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36573119] [2021-08-06 19:56:58,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:56:58,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:56:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:56:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:56:58,807 INFO L87 Difference]: Start difference. First operand 63631 states and 189559 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:00,057 INFO L93 Difference]: Finished difference Result 122752 states and 354024 transitions. [2021-08-06 19:57:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:57:00,057 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:00,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:00,469 INFO L225 Difference]: With dead ends: 122752 [2021-08-06 19:57:00,470 INFO L226 Difference]: Without dead ends: 118856 [2021-08-06 19:57:00,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 123.8ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:57:00,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118856 states. [2021-08-06 19:57:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118856 to 63073. [2021-08-06 19:57:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63073 states, 63072 states have (on average 2.9773274987316083) internal successors, (187786), 63072 states have internal predecessors, (187786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63073 states to 63073 states and 187786 transitions. [2021-08-06 19:57:02,797 INFO L78 Accepts]: Start accepts. Automaton has 63073 states and 187786 transitions. Word has length 46 [2021-08-06 19:57:02,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:02,797 INFO L470 AbstractCegarLoop]: Abstraction has 63073 states and 187786 transitions. [2021-08-06 19:57:02,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:02,798 INFO L276 IsEmpty]: Start isEmpty. Operand 63073 states and 187786 transitions. [2021-08-06 19:57:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:02,921 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:02,921 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:02,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-06 19:57:02,921 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:02,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:02,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1371096642, now seen corresponding path program 26 times [2021-08-06 19:57:02,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:02,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532851107] [2021-08-06 19:57:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:02,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:03,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:03,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:03,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532851107] [2021-08-06 19:57:03,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532851107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:03,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:03,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:57:03,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818339176] [2021-08-06 19:57:03,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:57:03,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:03,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:57:03,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:57:03,010 INFO L87 Difference]: Start difference. First operand 63073 states and 187786 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:04,654 INFO L93 Difference]: Finished difference Result 122436 states and 352968 transitions. [2021-08-06 19:57:04,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 19:57:04,654 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:04,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:05,101 INFO L225 Difference]: With dead ends: 122436 [2021-08-06 19:57:05,101 INFO L226 Difference]: Without dead ends: 117985 [2021-08-06 19:57:05,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 166.7ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:57:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117985 states. [2021-08-06 19:57:06,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117985 to 62570. [2021-08-06 19:57:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62570 states, 62569 states have (on average 2.9792868672985025) internal successors, (186411), 62569 states have internal predecessors, (186411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62570 states to 62570 states and 186411 transitions. [2021-08-06 19:57:07,473 INFO L78 Accepts]: Start accepts. Automaton has 62570 states and 186411 transitions. Word has length 46 [2021-08-06 19:57:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:07,473 INFO L470 AbstractCegarLoop]: Abstraction has 62570 states and 186411 transitions. [2021-08-06 19:57:07,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 62570 states and 186411 transitions. [2021-08-06 19:57:07,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:07,613 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:07,613 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:07,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-06 19:57:07,613 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:07,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1008017090, now seen corresponding path program 27 times [2021-08-06 19:57:07,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:07,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606965691] [2021-08-06 19:57:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:07,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:07,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:07,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:07,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606965691] [2021-08-06 19:57:07,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606965691] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:07,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:07,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:57:07,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639049972] [2021-08-06 19:57:07,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:57:07,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:07,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:57:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:57:07,691 INFO L87 Difference]: Start difference. First operand 62570 states and 186411 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:08,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:08,985 INFO L93 Difference]: Finished difference Result 124180 states and 362101 transitions. [2021-08-06 19:57:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:57:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:09,676 INFO L225 Difference]: With dead ends: 124180 [2021-08-06 19:57:09,677 INFO L226 Difference]: Without dead ends: 123816 [2021-08-06 19:57:09,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 99.3ms TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-08-06 19:57:09,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123816 states. [2021-08-06 19:57:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123816 to 62518. [2021-08-06 19:57:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62518 states, 62517 states have (on average 2.976774317385671) internal successors, (186099), 62517 states have internal predecessors, (186099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:11,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62518 states to 62518 states and 186099 transitions. [2021-08-06 19:57:11,757 INFO L78 Accepts]: Start accepts. Automaton has 62518 states and 186099 transitions. Word has length 46 [2021-08-06 19:57:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:11,757 INFO L470 AbstractCegarLoop]: Abstraction has 62518 states and 186099 transitions. [2021-08-06 19:57:11,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:11,758 INFO L276 IsEmpty]: Start isEmpty. Operand 62518 states and 186099 transitions. [2021-08-06 19:57:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:11,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:11,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:11,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-06 19:57:11,896 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:11,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:11,896 INFO L82 PathProgramCache]: Analyzing trace with hash -494089824, now seen corresponding path program 28 times [2021-08-06 19:57:11,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:11,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779923682] [2021-08-06 19:57:11,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:11,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:11,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:11,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779923682] [2021-08-06 19:57:11,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779923682] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:11,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:11,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:57:11,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35596684] [2021-08-06 19:57:11,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:57:11,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:57:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:57:11,979 INFO L87 Difference]: Start difference. First operand 62518 states and 186099 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:13,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:13,549 INFO L93 Difference]: Finished difference Result 119092 states and 348226 transitions. [2021-08-06 19:57:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:57:13,549 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:13,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:13,948 INFO L225 Difference]: With dead ends: 119092 [2021-08-06 19:57:13,948 INFO L226 Difference]: Without dead ends: 118362 [2021-08-06 19:57:13,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 469.0ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:57:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118362 states. [2021-08-06 19:57:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118362 to 61940. [2021-08-06 19:57:15,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61940 states, 61939 states have (on average 2.9713589176447797) internal successors, (184043), 61939 states have internal predecessors, (184043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61940 states to 61940 states and 184043 transitions. [2021-08-06 19:57:16,315 INFO L78 Accepts]: Start accepts. Automaton has 61940 states and 184043 transitions. Word has length 46 [2021-08-06 19:57:16,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:16,315 INFO L470 AbstractCegarLoop]: Abstraction has 61940 states and 184043 transitions. [2021-08-06 19:57:16,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 61940 states and 184043 transitions. [2021-08-06 19:57:16,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:16,440 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:16,440 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:16,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-06 19:57:16,440 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:16,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:16,441 INFO L82 PathProgramCache]: Analyzing trace with hash -939366752, now seen corresponding path program 29 times [2021-08-06 19:57:16,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:16,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974658139] [2021-08-06 19:57:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:16,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:16,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:16,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974658139] [2021-08-06 19:57:16,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974658139] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:16,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:16,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:57:16,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35463442] [2021-08-06 19:57:16,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:57:16,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:16,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:57:16,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:57:16,531 INFO L87 Difference]: Start difference. First operand 61940 states and 184043 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:17,951 INFO L93 Difference]: Finished difference Result 118458 states and 346498 transitions. [2021-08-06 19:57:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 19:57:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:18,621 INFO L225 Difference]: With dead ends: 118458 [2021-08-06 19:57:18,621 INFO L226 Difference]: Without dead ends: 117513 [2021-08-06 19:57:18,621 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:57:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117513 states. [2021-08-06 19:57:20,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117513 to 62089. [2021-08-06 19:57:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62089 states, 62088 states have (on average 2.9738113645148823) internal successors, (184638), 62088 states have internal predecessors, (184638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:20,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62089 states to 62089 states and 184638 transitions. [2021-08-06 19:57:20,626 INFO L78 Accepts]: Start accepts. Automaton has 62089 states and 184638 transitions. Word has length 46 [2021-08-06 19:57:20,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:20,627 INFO L470 AbstractCegarLoop]: Abstraction has 62089 states and 184638 transitions. [2021-08-06 19:57:20,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:20,627 INFO L276 IsEmpty]: Start isEmpty. Operand 62089 states and 184638 transitions. [2021-08-06 19:57:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:21,082 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:21,082 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:21,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-06 19:57:21,082 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:21,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:21,083 INFO L82 PathProgramCache]: Analyzing trace with hash 485124596, now seen corresponding path program 30 times [2021-08-06 19:57:21,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:21,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886750281] [2021-08-06 19:57:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:21,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:21,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:21,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:21,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886750281] [2021-08-06 19:57:21,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886750281] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:21,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:21,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:57:21,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886448667] [2021-08-06 19:57:21,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:57:21,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:21,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:57:21,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:57:21,177 INFO L87 Difference]: Start difference. First operand 62089 states and 184638 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:22,437 INFO L93 Difference]: Finished difference Result 155782 states and 460792 transitions. [2021-08-06 19:57:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:57:22,438 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:23,246 INFO L225 Difference]: With dead ends: 155782 [2021-08-06 19:57:23,246 INFO L226 Difference]: Without dead ends: 150682 [2021-08-06 19:57:23,247 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 69.6ms TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:57:23,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150682 states. [2021-08-06 19:57:26,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150682 to 86044. [2021-08-06 19:57:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86044 states, 86043 states have (on average 2.9741175923666074) internal successors, (255902), 86043 states have internal predecessors, (255902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86044 states to 86044 states and 255902 transitions. [2021-08-06 19:57:26,701 INFO L78 Accepts]: Start accepts. Automaton has 86044 states and 255902 transitions. Word has length 46 [2021-08-06 19:57:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:26,701 INFO L470 AbstractCegarLoop]: Abstraction has 86044 states and 255902 transitions. [2021-08-06 19:57:26,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:26,701 INFO L276 IsEmpty]: Start isEmpty. Operand 86044 states and 255902 transitions. [2021-08-06 19:57:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:26,909 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:26,909 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:26,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-06 19:57:26,910 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:26,911 INFO L82 PathProgramCache]: Analyzing trace with hash -635564684, now seen corresponding path program 31 times [2021-08-06 19:57:26,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:26,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065777117] [2021-08-06 19:57:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:26,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:27,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:27,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065777117] [2021-08-06 19:57:27,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065777117] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:27,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:27,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:57:27,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133100819] [2021-08-06 19:57:27,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:57:27,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:27,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:57:27,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:57:27,015 INFO L87 Difference]: Start difference. First operand 86044 states and 255902 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:28,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:28,834 INFO L93 Difference]: Finished difference Result 168320 states and 503748 transitions. [2021-08-06 19:57:28,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:57:28,835 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:28,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:29,747 INFO L225 Difference]: With dead ends: 168320 [2021-08-06 19:57:29,747 INFO L226 Difference]: Without dead ends: 165276 [2021-08-06 19:57:29,747 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 114.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:57:30,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165276 states. [2021-08-06 19:57:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165276 to 83616. [2021-08-06 19:57:32,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83616 states, 83615 states have (on average 2.979931830413203) internal successors, (249167), 83615 states have internal predecessors, (249167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:32,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83616 states to 83616 states and 249167 transitions. [2021-08-06 19:57:32,600 INFO L78 Accepts]: Start accepts. Automaton has 83616 states and 249167 transitions. Word has length 46 [2021-08-06 19:57:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:32,600 INFO L470 AbstractCegarLoop]: Abstraction has 83616 states and 249167 transitions. [2021-08-06 19:57:32,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:32,600 INFO L276 IsEmpty]: Start isEmpty. Operand 83616 states and 249167 transitions. [2021-08-06 19:57:33,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:33,181 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:33,181 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:33,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-06 19:57:33,181 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:33,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:33,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2105770808, now seen corresponding path program 32 times [2021-08-06 19:57:33,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:33,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955998843] [2021-08-06 19:57:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:33,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:33,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:33,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955998843] [2021-08-06 19:57:33,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955998843] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:33,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:33,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:57:33,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810830935] [2021-08-06 19:57:33,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:57:33,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:57:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:57:33,281 INFO L87 Difference]: Start difference. First operand 83616 states and 249167 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:34,450 INFO L93 Difference]: Finished difference Result 157639 states and 469498 transitions. [2021-08-06 19:57:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-06 19:57:34,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:34,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:35,322 INFO L225 Difference]: With dead ends: 157639 [2021-08-06 19:57:35,322 INFO L226 Difference]: Without dead ends: 156978 [2021-08-06 19:57:35,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:57:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156978 states. [2021-08-06 19:57:37,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156978 to 82971. [2021-08-06 19:57:37,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82971 states, 82970 states have (on average 2.9879353983367483) internal successors, (247909), 82970 states have internal predecessors, (247909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82971 states to 82971 states and 247909 transitions. [2021-08-06 19:57:38,136 INFO L78 Accepts]: Start accepts. Automaton has 82971 states and 247909 transitions. Word has length 46 [2021-08-06 19:57:38,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:38,136 INFO L470 AbstractCegarLoop]: Abstraction has 82971 states and 247909 transitions. [2021-08-06 19:57:38,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:38,137 INFO L276 IsEmpty]: Start isEmpty. Operand 82971 states and 247909 transitions. [2021-08-06 19:57:38,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:38,305 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:38,305 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:38,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-06 19:57:38,305 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:38,306 INFO L82 PathProgramCache]: Analyzing trace with hash 219045052, now seen corresponding path program 33 times [2021-08-06 19:57:38,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:38,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99244087] [2021-08-06 19:57:38,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:38,306 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:38,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:38,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99244087] [2021-08-06 19:57:38,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99244087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:38,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:38,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:57:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74931445] [2021-08-06 19:57:38,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:57:38,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:57:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:57:38,388 INFO L87 Difference]: Start difference. First operand 82971 states and 247909 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:40,065 INFO L93 Difference]: Finished difference Result 136947 states and 406413 transitions. [2021-08-06 19:57:40,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:57:40,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:40,552 INFO L225 Difference]: With dead ends: 136947 [2021-08-06 19:57:40,553 INFO L226 Difference]: Without dead ends: 134871 [2021-08-06 19:57:40,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=157, Invalid=305, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:57:40,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134871 states. [2021-08-06 19:57:42,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134871 to 79719. [2021-08-06 19:57:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79719 states, 79718 states have (on average 2.989437768132668) internal successors, (238312), 79718 states have internal predecessors, (238312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79719 states to 79719 states and 238312 transitions. [2021-08-06 19:57:43,149 INFO L78 Accepts]: Start accepts. Automaton has 79719 states and 238312 transitions. Word has length 46 [2021-08-06 19:57:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:43,149 INFO L470 AbstractCegarLoop]: Abstraction has 79719 states and 238312 transitions. [2021-08-06 19:57:43,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 79719 states and 238312 transitions. [2021-08-06 19:57:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:43,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:43,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:43,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-06 19:57:43,738 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:43,739 INFO L82 PathProgramCache]: Analyzing trace with hash -786937540, now seen corresponding path program 34 times [2021-08-06 19:57:43,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:43,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950320374] [2021-08-06 19:57:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:43,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:43,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:43,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:43,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950320374] [2021-08-06 19:57:43,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950320374] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:43,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:43,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:57:43,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231610443] [2021-08-06 19:57:43,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:57:43,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:57:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:57:43,831 INFO L87 Difference]: Start difference. First operand 79719 states and 238312 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:45,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:45,295 INFO L93 Difference]: Finished difference Result 131533 states and 390706 transitions. [2021-08-06 19:57:45,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 19:57:45,296 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:45,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:45,994 INFO L225 Difference]: With dead ends: 131533 [2021-08-06 19:57:45,994 INFO L226 Difference]: Without dead ends: 130175 [2021-08-06 19:57:45,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 175.5ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:57:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130175 states. [2021-08-06 19:57:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130175 to 77629. [2021-08-06 19:57:47,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77629 states, 77628 states have (on average 2.9969340959447623) internal successors, (232646), 77628 states have internal predecessors, (232646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77629 states to 77629 states and 232646 transitions. [2021-08-06 19:57:48,510 INFO L78 Accepts]: Start accepts. Automaton has 77629 states and 232646 transitions. Word has length 46 [2021-08-06 19:57:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:48,510 INFO L470 AbstractCegarLoop]: Abstraction has 77629 states and 232646 transitions. [2021-08-06 19:57:48,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 77629 states and 232646 transitions. [2021-08-06 19:57:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:48,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:48,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:48,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-06 19:57:48,691 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:48,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:48,691 INFO L82 PathProgramCache]: Analyzing trace with hash -381728612, now seen corresponding path program 35 times [2021-08-06 19:57:48,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:48,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249183686] [2021-08-06 19:57:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:48,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:48,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:48,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249183686] [2021-08-06 19:57:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249183686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:48,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:48,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:57:48,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112246841] [2021-08-06 19:57:48,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:57:48,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:48,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:57:48,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:57:48,729 INFO L87 Difference]: Start difference. First operand 77629 states and 232646 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:49,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:49,925 INFO L93 Difference]: Finished difference Result 157101 states and 471254 transitions. [2021-08-06 19:57:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 19:57:49,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:49,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:51,072 INFO L225 Difference]: With dead ends: 157101 [2021-08-06 19:57:51,072 INFO L226 Difference]: Without dead ends: 156603 [2021-08-06 19:57:51,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:57:51,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156603 states. [2021-08-06 19:57:53,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156603 to 83768. [2021-08-06 19:57:54,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83768 states, 83767 states have (on average 2.9703582556376618) internal successors, (248818), 83767 states have internal predecessors, (248818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83768 states to 83768 states and 248818 transitions. [2021-08-06 19:57:54,422 INFO L78 Accepts]: Start accepts. Automaton has 83768 states and 248818 transitions. Word has length 46 [2021-08-06 19:57:54,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:57:54,422 INFO L470 AbstractCegarLoop]: Abstraction has 83768 states and 248818 transitions. [2021-08-06 19:57:54,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 83768 states and 248818 transitions. [2021-08-06 19:57:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:57:54,591 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:57:54,591 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:57:54,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-06 19:57:54,591 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:57:54,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:57:54,592 INFO L82 PathProgramCache]: Analyzing trace with hash -871848292, now seen corresponding path program 36 times [2021-08-06 19:57:54,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:57:54,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111484255] [2021-08-06 19:57:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:57:54,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:57:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:57:54,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:57:54,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:57:54,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111484255] [2021-08-06 19:57:54,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111484255] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:57:54,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:57:54,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:57:54,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135741795] [2021-08-06 19:57:54,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:57:54,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:57:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:57:54,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:57:54,671 INFO L87 Difference]: Start difference. First operand 83768 states and 248818 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:57:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:57:56,360 INFO L93 Difference]: Finished difference Result 163955 states and 488114 transitions. [2021-08-06 19:57:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:57:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:57:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:57:56,972 INFO L225 Difference]: With dead ends: 163955 [2021-08-06 19:57:56,972 INFO L226 Difference]: Without dead ends: 163035 [2021-08-06 19:57:56,972 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 115.4ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:57:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163035 states. [2021-08-06 19:57:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163035 to 83106. [2021-08-06 19:57:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83106 states, 83105 states have (on average 2.965248781661753) internal successors, (246427), 83105 states have internal predecessors, (246427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83106 states to 83106 states and 246427 transitions. [2021-08-06 19:58:00,088 INFO L78 Accepts]: Start accepts. Automaton has 83106 states and 246427 transitions. Word has length 46 [2021-08-06 19:58:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:00,088 INFO L470 AbstractCegarLoop]: Abstraction has 83106 states and 246427 transitions. [2021-08-06 19:58:00,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 83106 states and 246427 transitions. [2021-08-06 19:58:00,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:00,255 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:00,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:00,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-06 19:58:00,256 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:00,256 INFO L82 PathProgramCache]: Analyzing trace with hash 264925372, now seen corresponding path program 37 times [2021-08-06 19:58:00,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:00,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496799249] [2021-08-06 19:58:00,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:00,256 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:00,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:00,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496799249] [2021-08-06 19:58:00,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496799249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:00,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:00,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:58:00,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061458616] [2021-08-06 19:58:00,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:58:00,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:00,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:58:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:00,335 INFO L87 Difference]: Start difference. First operand 83106 states and 246427 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:02,028 INFO L93 Difference]: Finished difference Result 160685 states and 475942 transitions. [2021-08-06 19:58:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:58:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:02,612 INFO L225 Difference]: With dead ends: 160685 [2021-08-06 19:58:02,612 INFO L226 Difference]: Without dead ends: 155937 [2021-08-06 19:58:02,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 101.1ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:58:03,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155937 states. [2021-08-06 19:58:05,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155937 to 81892. [2021-08-06 19:58:05,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81892 states, 81891 states have (on average 2.9659425333675253) internal successors, (242884), 81891 states have internal predecessors, (242884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:05,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81892 states to 81892 states and 242884 transitions. [2021-08-06 19:58:05,690 INFO L78 Accepts]: Start accepts. Automaton has 81892 states and 242884 transitions. Word has length 46 [2021-08-06 19:58:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:05,690 INFO L470 AbstractCegarLoop]: Abstraction has 81892 states and 242884 transitions. [2021-08-06 19:58:05,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:05,691 INFO L276 IsEmpty]: Start isEmpty. Operand 81892 states and 242884 transitions. [2021-08-06 19:58:05,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:05,885 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:05,885 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-06 19:58:05,886 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:05,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:05,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1562404254, now seen corresponding path program 38 times [2021-08-06 19:58:05,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:05,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63843810] [2021-08-06 19:58:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:05,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:05,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:05,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:05,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:05,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63843810] [2021-08-06 19:58:05,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63843810] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:05,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:05,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:58:05,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613464462] [2021-08-06 19:58:05,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:58:05,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:05,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:58:05,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:05,968 INFO L87 Difference]: Start difference. First operand 81892 states and 242884 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:07,692 INFO L93 Difference]: Finished difference Result 161333 states and 480919 transitions. [2021-08-06 19:58:07,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:58:07,692 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:07,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:08,322 INFO L225 Difference]: With dead ends: 161333 [2021-08-06 19:58:08,322 INFO L226 Difference]: Without dead ends: 160341 [2021-08-06 19:58:08,323 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 110.3ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:58:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160341 states. [2021-08-06 19:58:10,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160341 to 80702. [2021-08-06 19:58:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80702 states, 80701 states have (on average 2.967038822319426) internal successors, (239443), 80701 states have internal predecessors, (239443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80702 states to 80702 states and 239443 transitions. [2021-08-06 19:58:11,537 INFO L78 Accepts]: Start accepts. Automaton has 80702 states and 239443 transitions. Word has length 46 [2021-08-06 19:58:11,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:11,553 INFO L470 AbstractCegarLoop]: Abstraction has 80702 states and 239443 transitions. [2021-08-06 19:58:11,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 80702 states and 239443 transitions. [2021-08-06 19:58:11,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:11,771 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:11,771 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:11,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-06 19:58:11,771 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:11,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:11,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1822035728, now seen corresponding path program 39 times [2021-08-06 19:58:11,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:11,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246843619] [2021-08-06 19:58:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:11,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:11,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:11,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:11,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246843619] [2021-08-06 19:58:11,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246843619] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:11,825 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:11,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:58:11,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785349297] [2021-08-06 19:58:11,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:58:11,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:58:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:58:11,825 INFO L87 Difference]: Start difference. First operand 80702 states and 239443 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:12,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:12,990 INFO L93 Difference]: Finished difference Result 155596 states and 448215 transitions. [2021-08-06 19:58:12,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:58:12,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:12,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:13,835 INFO L225 Difference]: With dead ends: 155596 [2021-08-06 19:58:13,835 INFO L226 Difference]: Without dead ends: 153329 [2021-08-06 19:58:13,835 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 36.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153329 states. [2021-08-06 19:58:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153329 to 78361. [2021-08-06 19:58:15,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78361 states, 78360 states have (on average 2.8480729964267484) internal successors, (223175), 78360 states have internal predecessors, (223175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78361 states to 78361 states and 223175 transitions. [2021-08-06 19:58:16,467 INFO L78 Accepts]: Start accepts. Automaton has 78361 states and 223175 transitions. Word has length 46 [2021-08-06 19:58:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:16,467 INFO L470 AbstractCegarLoop]: Abstraction has 78361 states and 223175 transitions. [2021-08-06 19:58:16,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:16,467 INFO L276 IsEmpty]: Start isEmpty. Operand 78361 states and 223175 transitions. [2021-08-06 19:58:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:16,619 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:16,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:16,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-06 19:58:16,620 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:16,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1028633792, now seen corresponding path program 40 times [2021-08-06 19:58:16,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:16,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679817662] [2021-08-06 19:58:16,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:16,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:16,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:16,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679817662] [2021-08-06 19:58:16,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679817662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:16,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:16,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:58:16,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896380623] [2021-08-06 19:58:16,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:58:16,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:58:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:58:16,690 INFO L87 Difference]: Start difference. First operand 78361 states and 223175 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:17,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:17,818 INFO L93 Difference]: Finished difference Result 127183 states and 344115 transitions. [2021-08-06 19:58:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:58:17,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:17,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:18,418 INFO L225 Difference]: With dead ends: 127183 [2021-08-06 19:58:18,418 INFO L226 Difference]: Without dead ends: 121622 [2021-08-06 19:58:18,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 61.9ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:58:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121622 states. [2021-08-06 19:58:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121622 to 65846. [2021-08-06 19:58:20,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65846 states, 65845 states have (on average 2.6980788214746756) internal successors, (177655), 65845 states have internal predecessors, (177655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:20,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65846 states to 65846 states and 177655 transitions. [2021-08-06 19:58:20,989 INFO L78 Accepts]: Start accepts. Automaton has 65846 states and 177655 transitions. Word has length 46 [2021-08-06 19:58:20,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:20,989 INFO L470 AbstractCegarLoop]: Abstraction has 65846 states and 177655 transitions. [2021-08-06 19:58:20,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:20,989 INFO L276 IsEmpty]: Start isEmpty. Operand 65846 states and 177655 transitions. [2021-08-06 19:58:21,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:21,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:21,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:21,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-06 19:58:21,115 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:21,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:21,115 INFO L82 PathProgramCache]: Analyzing trace with hash 572592712, now seen corresponding path program 41 times [2021-08-06 19:58:21,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:21,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718170944] [2021-08-06 19:58:21,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:21,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:21,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:21,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:21,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718170944] [2021-08-06 19:58:21,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718170944] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:21,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:21,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:58:21,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807025312] [2021-08-06 19:58:21,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:58:21,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:58:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:21,195 INFO L87 Difference]: Start difference. First operand 65846 states and 177655 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:22,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:22,429 INFO L93 Difference]: Finished difference Result 120210 states and 319418 transitions. [2021-08-06 19:58:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:58:22,429 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:22,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:22,763 INFO L225 Difference]: With dead ends: 120210 [2021-08-06 19:58:22,764 INFO L226 Difference]: Without dead ends: 114886 [2021-08-06 19:58:22,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 103.8ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:58:23,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114886 states. [2021-08-06 19:58:24,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114886 to 62300. [2021-08-06 19:58:24,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62300 states, 62299 states have (on average 2.676479558259362) internal successors, (166742), 62299 states have internal predecessors, (166742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:24,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62300 states to 62300 states and 166742 transitions. [2021-08-06 19:58:24,823 INFO L78 Accepts]: Start accepts. Automaton has 62300 states and 166742 transitions. Word has length 46 [2021-08-06 19:58:24,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:24,824 INFO L470 AbstractCegarLoop]: Abstraction has 62300 states and 166742 transitions. [2021-08-06 19:58:24,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 62300 states and 166742 transitions. [2021-08-06 19:58:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:24,933 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:24,933 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:24,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-06 19:58:24,933 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:24,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1342393702, now seen corresponding path program 42 times [2021-08-06 19:58:24,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:24,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374762863] [2021-08-06 19:58:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:24,934 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:25,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:25,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374762863] [2021-08-06 19:58:25,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374762863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:25,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:25,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:58:25,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770484713] [2021-08-06 19:58:25,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:58:25,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:58:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:58:25,034 INFO L87 Difference]: Start difference. First operand 62300 states and 166742 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:26,225 INFO L93 Difference]: Finished difference Result 95426 states and 248244 transitions. [2021-08-06 19:58:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-06 19:58:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:26,458 INFO L225 Difference]: With dead ends: 95426 [2021-08-06 19:58:26,458 INFO L226 Difference]: Without dead ends: 93077 [2021-08-06 19:58:26,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 168.4ms TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2021-08-06 19:58:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93077 states. [2021-08-06 19:58:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93077 to 58607. [2021-08-06 19:58:27,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58607 states, 58606 states have (on average 2.6757328601167116) internal successors, (156814), 58606 states have internal predecessors, (156814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58607 states to 58607 states and 156814 transitions. [2021-08-06 19:58:28,340 INFO L78 Accepts]: Start accepts. Automaton has 58607 states and 156814 transitions. Word has length 46 [2021-08-06 19:58:28,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:28,340 INFO L470 AbstractCegarLoop]: Abstraction has 58607 states and 156814 transitions. [2021-08-06 19:58:28,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:28,340 INFO L276 IsEmpty]: Start isEmpty. Operand 58607 states and 156814 transitions. [2021-08-06 19:58:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:28,475 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:28,475 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:28,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-06 19:58:28,476 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:28,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:28,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1721196396, now seen corresponding path program 43 times [2021-08-06 19:58:28,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:28,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199602846] [2021-08-06 19:58:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:28,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:28,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:28,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199602846] [2021-08-06 19:58:28,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199602846] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:28,531 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:28,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:58:28,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954296039] [2021-08-06 19:58:28,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:58:28,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:58:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:58:28,533 INFO L87 Difference]: Start difference. First operand 58607 states and 156814 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:29,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:29,529 INFO L93 Difference]: Finished difference Result 120205 states and 323820 transitions. [2021-08-06 19:58:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:58:29,529 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:29,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:29,899 INFO L225 Difference]: With dead ends: 120205 [2021-08-06 19:58:29,899 INFO L226 Difference]: Without dead ends: 116873 [2021-08-06 19:58:29,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:30,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116873 states. [2021-08-06 19:58:31,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116873 to 52675. [2021-08-06 19:58:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52675 states, 52674 states have (on average 2.6352849603219806) internal successors, (138811), 52674 states have internal predecessors, (138811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52675 states to 52675 states and 138811 transitions. [2021-08-06 19:58:31,590 INFO L78 Accepts]: Start accepts. Automaton has 52675 states and 138811 transitions. Word has length 46 [2021-08-06 19:58:31,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:31,590 INFO L470 AbstractCegarLoop]: Abstraction has 52675 states and 138811 transitions. [2021-08-06 19:58:31,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 52675 states and 138811 transitions. [2021-08-06 19:58:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:31,694 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:31,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:31,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-06 19:58:31,694 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1894444978, now seen corresponding path program 44 times [2021-08-06 19:58:31,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:31,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190431686] [2021-08-06 19:58:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:31,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:31,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:31,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:31,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190431686] [2021-08-06 19:58:31,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190431686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:31,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:31,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:58:31,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604482088] [2021-08-06 19:58:31,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:58:31,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:31,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:58:31,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:58:31,758 INFO L87 Difference]: Start difference. First operand 52675 states and 138811 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:32,806 INFO L93 Difference]: Finished difference Result 113353 states and 304954 transitions. [2021-08-06 19:58:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:58:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:33,467 INFO L225 Difference]: With dead ends: 113353 [2021-08-06 19:58:33,467 INFO L226 Difference]: Without dead ends: 111253 [2021-08-06 19:58:33,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 69.2ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:58:33,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111253 states. [2021-08-06 19:58:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111253 to 49052. [2021-08-06 19:58:34,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49052 states, 49051 states have (on average 2.6135043118386987) internal successors, (128195), 49051 states have internal predecessors, (128195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:35,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49052 states to 49052 states and 128195 transitions. [2021-08-06 19:58:35,049 INFO L78 Accepts]: Start accepts. Automaton has 49052 states and 128195 transitions. Word has length 46 [2021-08-06 19:58:35,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:35,049 INFO L470 AbstractCegarLoop]: Abstraction has 49052 states and 128195 transitions. [2021-08-06 19:58:35,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:35,049 INFO L276 IsEmpty]: Start isEmpty. Operand 49052 states and 128195 transitions. [2021-08-06 19:58:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:35,122 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:35,122 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:35,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-06 19:58:35,123 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1631289096, now seen corresponding path program 45 times [2021-08-06 19:58:35,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:35,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114075671] [2021-08-06 19:58:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:35,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:35,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:35,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114075671] [2021-08-06 19:58:35,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114075671] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:35,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:35,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:58:35,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276941255] [2021-08-06 19:58:35,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:58:35,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:35,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:58:35,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:58:35,191 INFO L87 Difference]: Start difference. First operand 49052 states and 128195 transitions. Second operand has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:36,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:36,065 INFO L93 Difference]: Finished difference Result 95297 states and 251616 transitions. [2021-08-06 19:58:36,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 19:58:36,065 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:36,285 INFO L225 Difference]: With dead ends: 95297 [2021-08-06 19:58:36,285 INFO L226 Difference]: Without dead ends: 94201 [2021-08-06 19:58:36,285 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 67.4ms TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2021-08-06 19:58:36,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94201 states. [2021-08-06 19:58:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94201 to 47112. [2021-08-06 19:58:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47112 states, 47111 states have (on average 2.603128780964106) internal successors, (122636), 47111 states have internal predecessors, (122636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:37,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47112 states to 47112 states and 122636 transitions. [2021-08-06 19:58:37,681 INFO L78 Accepts]: Start accepts. Automaton has 47112 states and 122636 transitions. Word has length 46 [2021-08-06 19:58:37,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:37,681 INFO L470 AbstractCegarLoop]: Abstraction has 47112 states and 122636 transitions. [2021-08-06 19:58:37,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.181818181818182) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:37,682 INFO L276 IsEmpty]: Start isEmpty. Operand 47112 states and 122636 transitions. [2021-08-06 19:58:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:37,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:37,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:37,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-06 19:58:37,754 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:37,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:37,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1161571286, now seen corresponding path program 46 times [2021-08-06 19:58:37,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:37,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811183328] [2021-08-06 19:58:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:37,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:37,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:37,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811183328] [2021-08-06 19:58:37,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811183328] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:37,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:37,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:58:37,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771733366] [2021-08-06 19:58:37,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:58:37,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:58:37,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:37,831 INFO L87 Difference]: Start difference. First operand 47112 states and 122636 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:38,767 INFO L93 Difference]: Finished difference Result 92205 states and 243163 transitions. [2021-08-06 19:58:38,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-06 19:58:38,767 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:38,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:38,976 INFO L225 Difference]: With dead ends: 92205 [2021-08-06 19:58:38,976 INFO L226 Difference]: Without dead ends: 91285 [2021-08-06 19:58:38,976 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 100.6ms TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:58:39,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91285 states. [2021-08-06 19:58:40,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91285 to 45808. [2021-08-06 19:58:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45808 states, 45807 states have (on average 2.605955421660445) internal successors, (119371), 45807 states have internal predecessors, (119371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45808 states to 45808 states and 119371 transitions. [2021-08-06 19:58:40,391 INFO L78 Accepts]: Start accepts. Automaton has 45808 states and 119371 transitions. Word has length 46 [2021-08-06 19:58:40,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:40,391 INFO L470 AbstractCegarLoop]: Abstraction has 45808 states and 119371 transitions. [2021-08-06 19:58:40,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:40,391 INFO L276 IsEmpty]: Start isEmpty. Operand 45808 states and 119371 transitions. [2021-08-06 19:58:40,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:40,463 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:40,463 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:40,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-06 19:58:40,463 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:40,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:40,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1681650576, now seen corresponding path program 47 times [2021-08-06 19:58:40,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:40,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665757507] [2021-08-06 19:58:40,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:40,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:40,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:40,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665757507] [2021-08-06 19:58:40,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665757507] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:40,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:40,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:58:40,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991626909] [2021-08-06 19:58:40,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:58:40,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:40,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:58:40,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:58:40,509 INFO L87 Difference]: Start difference. First operand 45808 states and 119371 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:41,149 INFO L93 Difference]: Finished difference Result 78685 states and 209535 transitions. [2021-08-06 19:58:41,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-06 19:58:41,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:41,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:41,347 INFO L225 Difference]: With dead ends: 78685 [2021-08-06 19:58:41,347 INFO L226 Difference]: Without dead ends: 77461 [2021-08-06 19:58:41,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:58:41,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77461 states. [2021-08-06 19:58:42,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77461 to 35518. [2021-08-06 19:58:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35518 states, 35517 states have (on average 2.611397359011178) internal successors, (92749), 35517 states have internal predecessors, (92749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35518 states to 35518 states and 92749 transitions. [2021-08-06 19:58:42,614 INFO L78 Accepts]: Start accepts. Automaton has 35518 states and 92749 transitions. Word has length 46 [2021-08-06 19:58:42,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:42,615 INFO L470 AbstractCegarLoop]: Abstraction has 35518 states and 92749 transitions. [2021-08-06 19:58:42,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 35518 states and 92749 transitions. [2021-08-06 19:58:42,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:42,686 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:42,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:42,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-06 19:58:42,686 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:42,687 INFO L82 PathProgramCache]: Analyzing trace with hash 631959056, now seen corresponding path program 48 times [2021-08-06 19:58:42,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:42,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569854266] [2021-08-06 19:58:42,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:42,687 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:42,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:42,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569854266] [2021-08-06 19:58:42,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569854266] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:42,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:42,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:58:42,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227166288] [2021-08-06 19:58:42,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:58:42,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:42,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:58:42,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:58:42,737 INFO L87 Difference]: Start difference. First operand 35518 states and 92749 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:43,080 INFO L93 Difference]: Finished difference Result 41817 states and 106272 transitions. [2021-08-06 19:58:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-06 19:58:43,080 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:43,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:43,160 INFO L225 Difference]: With dead ends: 41817 [2021-08-06 19:58:43,160 INFO L226 Difference]: Without dead ends: 38277 [2021-08-06 19:58:43,160 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 37.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:43,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38277 states. [2021-08-06 19:58:43,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38277 to 18210. [2021-08-06 19:58:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18210 states, 18209 states have (on average 2.523532319182822) internal successors, (45951), 18209 states have internal predecessors, (45951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18210 states to 18210 states and 45951 transitions. [2021-08-06 19:58:43,703 INFO L78 Accepts]: Start accepts. Automaton has 18210 states and 45951 transitions. Word has length 46 [2021-08-06 19:58:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:43,703 INFO L470 AbstractCegarLoop]: Abstraction has 18210 states and 45951 transitions. [2021-08-06 19:58:43,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 18210 states and 45951 transitions. [2021-08-06 19:58:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:43,728 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:43,728 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:43,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-06 19:58:43,728 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:43,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:43,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1556820226, now seen corresponding path program 49 times [2021-08-06 19:58:43,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:43,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496826887] [2021-08-06 19:58:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:43,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:43,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:43,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496826887] [2021-08-06 19:58:43,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496826887] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:43,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:43,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:58:43,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032864781] [2021-08-06 19:58:43,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:58:43,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:58:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:58:43,796 INFO L87 Difference]: Start difference. First operand 18210 states and 45951 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:44,086 INFO L93 Difference]: Finished difference Result 13373 states and 29800 transitions. [2021-08-06 19:58:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:58:44,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:44,098 INFO L225 Difference]: With dead ends: 13373 [2021-08-06 19:58:44,098 INFO L226 Difference]: Without dead ends: 7419 [2021-08-06 19:58:44,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:58:44,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7419 states. [2021-08-06 19:58:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7419 to 4395. [2021-08-06 19:58:44,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 4394 states have (on average 2.324988620846609) internal successors, (10216), 4394 states have internal predecessors, (10216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 10216 transitions. [2021-08-06 19:58:44,162 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 10216 transitions. Word has length 46 [2021-08-06 19:58:44,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:44,162 INFO L470 AbstractCegarLoop]: Abstraction has 4395 states and 10216 transitions. [2021-08-06 19:58:44,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 10216 transitions. [2021-08-06 19:58:44,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:44,167 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:44,167 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:44,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-06 19:58:44,167 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:44,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:44,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1305463926, now seen corresponding path program 50 times [2021-08-06 19:58:44,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:44,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604423147] [2021-08-06 19:58:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:44,168 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:44,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:44,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604423147] [2021-08-06 19:58:44,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604423147] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:44,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:44,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-06 19:58:44,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492857599] [2021-08-06 19:58:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-06 19:58:44,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:44,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-06 19:58:44,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-08-06 19:58:44,299 INFO L87 Difference]: Start difference. First operand 4395 states and 10216 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:44,588 INFO L93 Difference]: Finished difference Result 4435 states and 8614 transitions. [2021-08-06 19:58:44,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:58:44,589 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:44,590 INFO L225 Difference]: With dead ends: 4435 [2021-08-06 19:58:44,590 INFO L226 Difference]: Without dead ends: 1275 [2021-08-06 19:58:44,591 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 146.3ms TimeCoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:58:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2021-08-06 19:58:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 887. [2021-08-06 19:58:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 886 states have (on average 1.9390519187358917) internal successors, (1718), 886 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1718 transitions. [2021-08-06 19:58:44,600 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1718 transitions. Word has length 46 [2021-08-06 19:58:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:44,600 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1718 transitions. [2021-08-06 19:58:44,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1718 transitions. [2021-08-06 19:58:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-06 19:58:44,601 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:58:44,601 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-06 19:58:44,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-06 19:58:44,601 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-08-06 19:58:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:58:44,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1668144680, now seen corresponding path program 51 times [2021-08-06 19:58:44,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:58:44,601 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409870210] [2021-08-06 19:58:44,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:58:44,602 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:58:44,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:58:44,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-06 19:58:44,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:58:44,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409870210] [2021-08-06 19:58:44,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409870210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:58:44,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:58:44,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-08-06 19:58:44,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024341274] [2021-08-06 19:58:44,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-08-06 19:58:44,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:58:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-08-06 19:58:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-08-06 19:58:44,692 INFO L87 Difference]: Start difference. First operand 887 states and 1718 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:58:44,937 INFO L93 Difference]: Finished difference Result 1058 states and 1829 transitions. [2021-08-06 19:58:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:58:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-06 19:58:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:58:44,938 INFO L225 Difference]: With dead ends: 1058 [2021-08-06 19:58:44,938 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:58:44,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 110.8ms TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-08-06 19:58:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:58:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:58:44,938 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) [2021-08-06 19:58:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:58:44,939 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-08-06 19:58:44,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:58:44,939 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:58:44,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 12 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:58:44,939 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:58:44,939 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-06 19:58:44,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5INUSE_VIOLATION [2021-08-06 19:58:44,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-06 19:58:44,944 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:58:44,944 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:58:44,946 INFO L202 PluginConnector]: Adding new model ticket-6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:58:44 BasicIcfg [2021-08-06 19:58:44,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:58:44,947 INFO L168 Benchmark]: Toolchain (without parser) took 247318.35 ms. Allocated memory was 204.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 185.1 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 ms. Allocated memory is still 204.5 MB. Free memory is still 186.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.82 ms. Allocated memory is still 204.5 MB. Free memory was 185.1 MB in the beginning and 183.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 INFO L168 Benchmark]: Boogie Preprocessor took 14.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 182.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 INFO L168 Benchmark]: RCFGBuilder took 266.25 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 165.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 INFO L168 Benchmark]: TraceAbstraction took 247007.75 ms. Allocated memory was 204.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 165.3 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 8.0 GB. [2021-08-06 19:58:44,947 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 0.16 ms. Allocated memory is still 204.5 MB. Free memory is still 186.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 24.82 ms. Allocated memory is still 204.5 MB. Free memory was 185.1 MB in the beginning and 183.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.87 ms. Allocated memory is still 204.5 MB. Free memory was 183.5 MB in the beginning and 182.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 266.25 ms. Allocated memory is still 204.5 MB. Free memory was 182.5 MB in the beginning and 165.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 247007.75 ms. Allocated memory was 204.5 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 165.3 MB in the beginning and 4.6 GB in the end (delta: -4.4 GB). Peak memory consumption was 3.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 514839, positive: 477626, positive conditional: 477626, positive unconditional: 0, negative: 37213, negative conditional: 37213, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 514839, positive: 477626, positive conditional: 0, positive unconditional: 477626, negative: 37213, negative conditional: 0, negative unconditional: 37213, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 745, positive: 687, positive conditional: 0, positive unconditional: 687, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 745, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 112, negative conditional: 0, negative unconditional: 112, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 112, positive: 54, positive conditional: 0, positive unconditional: 54, negative: 58, negative conditional: 0, negative unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 349, positive: 150, positive conditional: 0, positive unconditional: 150, negative: 199, negative conditional: 0, negative unconditional: 199, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 514839, positive: 476939, positive conditional: 0, positive unconditional: 476939, negative: 37155, negative conditional: 0, negative unconditional: 37155, unknown: 745, unknown conditional: 0, unknown unconditional: 745] , Statistics on independence cache: Total cache size (in pairs): 745, Positive cache size: 687, Positive conditional cache size: 0, Positive unconditional cache size: 687, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Independence queries for same thread: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 110]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 13 procedures, 98 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 246906.0ms, OverallIterations: 51, TraceHistogramMax: 1, EmptinessCheckTime: 11431.2ms, AutomataDifference: 98507.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6244.8ms, PartialOrderReductionTime: 6231.4ms, HoareTripleCheckerStatistics: 4544 SDtfs, 8930 SDslu, 18568 SDs, 0 SdLazy, 26789 SolverSat, 4648 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13018.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 920 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 778 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1964 ImplicationChecksByTransitivity, 6167.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=86044occurred in iteration=30, InterpolantAutomatonStates: 722, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 124101.2ms AutomataMinimizationTime, 51 MinimizatonAttempts, 2945226 StatesRemovedByMinimization, 50 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 68.3ms SsaConstructionTime, 1145.6ms SatisfiabilityAnalysisTime, 4778.0ms InterpolantComputationTime, 2346 NumberOfCodeBlocks, 2346 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 2295 ConstructedInterpolants, 0 QuantifiedInterpolants, 6966 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 51 InterpolantComputations, 51 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! [2021-08-06 19:58:44,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...