/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-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-06 19:54:30,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-06 19:54:30,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-06 19:54:30,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-06 19:54:30,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-06 19:54:30,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-06 19:54:30,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-06 19:54:30,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-06 19:54:30,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-06 19:54:30,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-06 19:54:30,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-06 19:54:30,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-06 19:54:30,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-06 19:54:30,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-06 19:54:30,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-06 19:54:30,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-06 19:54:30,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-06 19:54:30,404 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 19:54:30,430 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-06 19:54:30,430 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-06 19:54:30,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-06 19:54:30,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-06 19:54:30,433 INFO L138 SettingsManager]: * Use SBE=true [2021-08-06 19:54:30,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-06 19:54:30,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-06 19:54:30,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-06 19:54:30,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-06 19:54:30,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-06 19:54:30,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-06 19:54:30,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-06 19:54:30,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:54:30,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-06 19:54:30,436 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-08-06 19:54:30,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-06 19:54:30,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-06 19:54:30,745 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-06 19:54:30,747 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-06 19:54:30,748 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-06 19:54:30,753 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-06 19:54:30,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl [2021-08-06 19:54:30,754 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-5.wvr.bpl' [2021-08-06 19:54:30,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-06 19:54:30,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-06 19:54:30,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-06 19:54:30,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-06 19:54:30,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-06 19:54:30,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-06 19:54:30,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-06 19:54:30,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-06 19:54:30,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-06 19:54:30,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,822 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-06 19:54:30,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-06 19:54:30,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-06 19:54:30,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-06 19:54:30,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/1) ... [2021-08-06 19:54:30,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-06 19:54:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-06 19:54:30,846 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 19:54:30,868 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 19:54:30,877 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-06 19:54:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-06 19:54:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-06 19:54:30,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-06 19:54:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-06 19:54:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-06 19:54:30,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-06 19:54:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-06 19:54:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-06 19:54:30,878 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-06 19:54:30,878 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-06 19:54:30,878 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-06 19:54:30,879 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-06 19:54:30,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-06 19:54:30,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-06 19:54:30,879 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-06 19:54:30,879 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-06 19:54:30,879 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-06 19:54:30,880 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 19:54:31,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-06 19:54:31,068 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-06 19:54:31,069 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:54:31 BoogieIcfgContainer [2021-08-06 19:54:31,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-06 19:54:31,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-06 19:54:31,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-06 19:54:31,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-06 19:54:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 07:54:30" (1/2) ... [2021-08-06 19:54:31,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576ded1e and model type ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.08 07:54:31, skipping insertion in model container [2021-08-06 19:54:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 07:54:31" (2/2) ... [2021-08-06 19:54:31,074 INFO L111 eAbstractionObserver]: Analyzing ICFG ticket-5.wvr.bpl [2021-08-06 19:54:31,099 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-06 19:54:31,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-06 19:54:31,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-06 19:54:31,099 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-06 19:54:31,169 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-08-06 19:54:31,209 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-06 19:54:31,214 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 19:54:31,214 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-08-06 19:54:32,436 INFO L276 IsEmpty]: Start isEmpty. Operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 0 states have call successors, (0), 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 19:54:32,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:32,488 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:32,488 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] [2021-08-06 19:54:32,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:32,492 INFO L82 PathProgramCache]: Analyzing trace with hash 204679104, now seen corresponding path program 1 times [2021-08-06 19:54:32,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:32,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328632763] [2021-08-06 19:54:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:32,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:32,677 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 19:54:32,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328632763] [2021-08-06 19:54:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328632763] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:32,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:32,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-06 19:54:32,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339689440] [2021-08-06 19:54:32,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-06 19:54:32,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:32,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-06 19:54:32,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-06 19:54:32,709 INFO L87 Difference]: Start difference. First operand has 12444 states, 9550 states have (on average 2.8894240837696334) internal successors, (27594), 12443 states have internal predecessors, (27594), 0 states have call successors, (0), 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 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:32,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:32,887 INFO L93 Difference]: Finished difference Result 12865 states and 28600 transitions. [2021-08-06 19:54:32,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 19:54:32,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:32,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:32,931 INFO L225 Difference]: With dead ends: 12865 [2021-08-06 19:54:32,932 INFO L226 Difference]: Without dead ends: 5519 [2021-08-06 19:54:32,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2021-08-06 19:54:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5447. [2021-08-06 19:54:33,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5447 states, 5446 states have (on average 3.0457216305545356) internal successors, (16587), 5446 states have internal predecessors, (16587), 0 states have call successors, (0), 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 19:54:33,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5447 states to 5447 states and 16587 transitions. [2021-08-06 19:54:33,209 INFO L78 Accepts]: Start accepts. Automaton has 5447 states and 16587 transitions. Word has length 39 [2021-08-06 19:54:33,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:33,210 INFO L470 AbstractCegarLoop]: Abstraction has 5447 states and 16587 transitions. [2021-08-06 19:54:33,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:33,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5447 states and 16587 transitions. [2021-08-06 19:54:33,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:33,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:33,223 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] [2021-08-06 19:54:33,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-06 19:54:33,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:33,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:33,224 INFO L82 PathProgramCache]: Analyzing trace with hash -577001536, now seen corresponding path program 2 times [2021-08-06 19:54:33,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:33,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666623760] [2021-08-06 19:54:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:33,225 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:33,274 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 19:54:33,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:33,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666623760] [2021-08-06 19:54:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666623760] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:33,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:33,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:54:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082699820] [2021-08-06 19:54:33,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:54:33,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:54:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:33,277 INFO L87 Difference]: Start difference. First operand 5447 states and 16587 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:33,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:33,529 INFO L93 Difference]: Finished difference Result 12960 states and 38635 transitions. [2021-08-06 19:54:33,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 19:54:33,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:33,607 INFO L225 Difference]: With dead ends: 12960 [2021-08-06 19:54:33,608 INFO L226 Difference]: Without dead ends: 12960 [2021-08-06 19:54:33,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:54:33,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12960 states. [2021-08-06 19:54:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12960 to 6330. [2021-08-06 19:54:33,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6330 states, 6329 states have (on average 3.034128614315058) internal successors, (19203), 6329 states have internal predecessors, (19203), 0 states have call successors, (0), 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 19:54:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6330 states to 6330 states and 19203 transitions. [2021-08-06 19:54:33,904 INFO L78 Accepts]: Start accepts. Automaton has 6330 states and 19203 transitions. Word has length 39 [2021-08-06 19:54:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:33,905 INFO L470 AbstractCegarLoop]: Abstraction has 6330 states and 19203 transitions. [2021-08-06 19:54:33,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:33,906 INFO L276 IsEmpty]: Start isEmpty. Operand 6330 states and 19203 transitions. [2021-08-06 19:54:33,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:33,924 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:33,924 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] [2021-08-06 19:54:33,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-06 19:54:33,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:33,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1826948228, now seen corresponding path program 3 times [2021-08-06 19:54:33,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:33,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681391659] [2021-08-06 19:54:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:33,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:34,062 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 19:54:34,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:34,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681391659] [2021-08-06 19:54:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681391659] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:34,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:34,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:54:34,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364167154] [2021-08-06 19:54:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:54:34,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:34,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:54:34,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:34,067 INFO L87 Difference]: Start difference. First operand 6330 states and 19203 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:34,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:34,635 INFO L93 Difference]: Finished difference Result 15591 states and 44705 transitions. [2021-08-06 19:54:34,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:54:34,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:34,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:34,683 INFO L225 Difference]: With dead ends: 15591 [2021-08-06 19:54:34,683 INFO L226 Difference]: Without dead ends: 15591 [2021-08-06 19:54:34,683 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 115.2ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:54:34,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15591 states. [2021-08-06 19:54:34,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15591 to 8449. [2021-08-06 19:54:34,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8449 states, 8448 states have (on average 2.908499053030303) internal successors, (24571), 8448 states have internal predecessors, (24571), 0 states have call successors, (0), 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 19:54:34,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 24571 transitions. [2021-08-06 19:54:34,908 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 24571 transitions. Word has length 39 [2021-08-06 19:54:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:34,908 INFO L470 AbstractCegarLoop]: Abstraction has 8449 states and 24571 transitions. [2021-08-06 19:54:34,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 24571 transitions. [2021-08-06 19:54:34,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:34,927 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:34,927 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] [2021-08-06 19:54:34,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-06 19:54:34,927 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:34,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:34,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1407722628, now seen corresponding path program 4 times [2021-08-06 19:54:34,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:34,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341554175] [2021-08-06 19:54:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:34,928 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:34,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:34,978 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 9, result has 57.1 percent of original size [2021-08-06 19:54:34,986 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 9, result has 57.1 percent of original size [2021-08-06 19:54:34,998 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,000 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,009 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,010 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,015 WARN L248 tifierPushTermWalker]: Quantifier elimination called on non-simplified input: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,016 WARN L260 tifierPushTermWalker]: Quantifier elimination failed to simlify output: treesize reduction 4, result has 60.0 percent of original size [2021-08-06 19:54:35,100 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 19:54:35,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:35,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341554175] [2021-08-06 19:54:35,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341554175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:35,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:35,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:54:35,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063005570] [2021-08-06 19:54:35,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:54:35,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:35,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:54:35,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:35,101 INFO L87 Difference]: Start difference. First operand 8449 states and 24571 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:35,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:35,187 INFO L93 Difference]: Finished difference Result 12853 states and 37603 transitions. [2021-08-06 19:54:35,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-06 19:54:35,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:35,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:35,211 INFO L225 Difference]: With dead ends: 12853 [2021-08-06 19:54:35,211 INFO L226 Difference]: Without dead ends: 8621 [2021-08-06 19:54:35,211 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 71.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:35,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8621 states. [2021-08-06 19:54:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8621 to 8439. [2021-08-06 19:54:35,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8439 states, 8438 states have (on average 2.854467883384688) internal successors, (24086), 8438 states have internal predecessors, (24086), 0 states have call successors, (0), 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 19:54:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8439 states to 8439 states and 24086 transitions. [2021-08-06 19:54:35,411 INFO L78 Accepts]: Start accepts. Automaton has 8439 states and 24086 transitions. Word has length 39 [2021-08-06 19:54:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:35,412 INFO L470 AbstractCegarLoop]: Abstraction has 8439 states and 24086 transitions. [2021-08-06 19:54:35,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:35,414 INFO L276 IsEmpty]: Start isEmpty. Operand 8439 states and 24086 transitions. [2021-08-06 19:54:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:35,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:35,433 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] [2021-08-06 19:54:35,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-06 19:54:35,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:35,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:35,434 INFO L82 PathProgramCache]: Analyzing trace with hash 812253214, now seen corresponding path program 5 times [2021-08-06 19:54:35,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:35,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540655336] [2021-08-06 19:54:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:35,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:35,508 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 19:54:35,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:35,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540655336] [2021-08-06 19:54:35,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540655336] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:35,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:35,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:54:35,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282592482] [2021-08-06 19:54:35,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:54:35,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:54:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:54:35,510 INFO L87 Difference]: Start difference. First operand 8439 states and 24086 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:35,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:35,883 INFO L93 Difference]: Finished difference Result 16007 states and 42244 transitions. [2021-08-06 19:54:35,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:54:35,884 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:35,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:35,928 INFO L225 Difference]: With dead ends: 16007 [2021-08-06 19:54:35,928 INFO L226 Difference]: Without dead ends: 15146 [2021-08-06 19:54:35,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 70.1ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:54:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15146 states. [2021-08-06 19:54:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15146 to 7776. [2021-08-06 19:54:36,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7776 states, 7775 states have (on average 2.707395498392283) internal successors, (21050), 7775 states have internal predecessors, (21050), 0 states have call successors, (0), 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 19:54:36,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 21050 transitions. [2021-08-06 19:54:36,156 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 21050 transitions. Word has length 39 [2021-08-06 19:54:36,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:36,157 INFO L470 AbstractCegarLoop]: Abstraction has 7776 states and 21050 transitions. [2021-08-06 19:54:36,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:36,157 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 21050 transitions. [2021-08-06 19:54:36,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:36,173 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:36,173 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] [2021-08-06 19:54:36,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-06 19:54:36,173 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:36,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:36,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1995611332, now seen corresponding path program 6 times [2021-08-06 19:54:36,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:36,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796368051] [2021-08-06 19:54:36,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:36,174 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:36,262 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 19:54:36,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:36,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796368051] [2021-08-06 19:54:36,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796368051] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:36,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:36,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:54:36,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915137119] [2021-08-06 19:54:36,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:54:36,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:36,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:54:36,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:36,264 INFO L87 Difference]: Start difference. First operand 7776 states and 21050 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:36,747 INFO L93 Difference]: Finished difference Result 14270 states and 37365 transitions. [2021-08-06 19:54:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:54:36,751 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:36,788 INFO L225 Difference]: With dead ends: 14270 [2021-08-06 19:54:36,788 INFO L226 Difference]: Without dead ends: 13168 [2021-08-06 19:54:36,789 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:54:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13168 states. [2021-08-06 19:54:36,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13168 to 7494. [2021-08-06 19:54:36,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 2.707860669958628) internal successors, (20290), 7493 states have internal predecessors, (20290), 0 states have call successors, (0), 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 19:54:36,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 20290 transitions. [2021-08-06 19:54:36,987 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 20290 transitions. Word has length 39 [2021-08-06 19:54:36,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:36,987 INFO L470 AbstractCegarLoop]: Abstraction has 7494 states and 20290 transitions. [2021-08-06 19:54:36,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:36,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 20290 transitions. [2021-08-06 19:54:37,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:37,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:37,002 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] [2021-08-06 19:54:37,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-06 19:54:37,002 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:37,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:37,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1372898600, now seen corresponding path program 7 times [2021-08-06 19:54:37,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:37,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769827712] [2021-08-06 19:54:37,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:37,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:37,107 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 19:54:37,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:37,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769827712] [2021-08-06 19:54:37,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769827712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:37,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:37,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:54:37,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156679578] [2021-08-06 19:54:37,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:54:37,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:37,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:54:37,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:54:37,109 INFO L87 Difference]: Start difference. First operand 7494 states and 20290 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:37,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:37,409 INFO L93 Difference]: Finished difference Result 13290 states and 33861 transitions. [2021-08-06 19:54:37,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:54:37,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:37,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:37,438 INFO L225 Difference]: With dead ends: 13290 [2021-08-06 19:54:37,439 INFO L226 Difference]: Without dead ends: 12905 [2021-08-06 19:54:37,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 105.0ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:54:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12905 states. [2021-08-06 19:54:37,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12905 to 7299. [2021-08-06 19:54:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7299 states, 7298 states have (on average 2.5791997807618525) internal successors, (18823), 7298 states have internal predecessors, (18823), 0 states have call successors, (0), 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 19:54:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7299 states to 7299 states and 18823 transitions. [2021-08-06 19:54:37,624 INFO L78 Accepts]: Start accepts. Automaton has 7299 states and 18823 transitions. Word has length 39 [2021-08-06 19:54:37,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:37,624 INFO L470 AbstractCegarLoop]: Abstraction has 7299 states and 18823 transitions. [2021-08-06 19:54:37,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:37,624 INFO L276 IsEmpty]: Start isEmpty. Operand 7299 states and 18823 transitions. [2021-08-06 19:54:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:37,635 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:37,635 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] [2021-08-06 19:54:37,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-06 19:54:37,636 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:37,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:37,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1399567846, now seen corresponding path program 8 times [2021-08-06 19:54:37,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:37,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406481079] [2021-08-06 19:54:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:37,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:37,702 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 19:54:37,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:37,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406481079] [2021-08-06 19:54:37,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406481079] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:37,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:37,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:54:37,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431150414] [2021-08-06 19:54:37,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:54:37,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:54:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:37,703 INFO L87 Difference]: Start difference. First operand 7299 states and 18823 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:38,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:38,045 INFO L93 Difference]: Finished difference Result 12625 states and 32209 transitions. [2021-08-06 19:54:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:54:38,045 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:38,067 INFO L225 Difference]: With dead ends: 12625 [2021-08-06 19:54:38,067 INFO L226 Difference]: Without dead ends: 12314 [2021-08-06 19:54:38,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 95.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:54:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12314 states. [2021-08-06 19:54:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12314 to 7233. [2021-08-06 19:54:38,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7232 states have (on average 2.5869745575221237) internal successors, (18709), 7232 states have internal predecessors, (18709), 0 states have call successors, (0), 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 19:54:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 18709 transitions. [2021-08-06 19:54:38,188 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 18709 transitions. Word has length 39 [2021-08-06 19:54:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:38,188 INFO L470 AbstractCegarLoop]: Abstraction has 7233 states and 18709 transitions. [2021-08-06 19:54:38,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:38,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 18709 transitions. [2021-08-06 19:54:38,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:38,199 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:38,199 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] [2021-08-06 19:54:38,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-06 19:54:38,199 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:38,199 INFO L82 PathProgramCache]: Analyzing trace with hash -144266648, now seen corresponding path program 9 times [2021-08-06 19:54:38,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:38,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949835716] [2021-08-06 19:54:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:38,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:38,246 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 19:54:38,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:38,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949835716] [2021-08-06 19:54:38,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949835716] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:38,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:38,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:54:38,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977260019] [2021-08-06 19:54:38,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:54:38,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:38,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:54:38,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:38,247 INFO L87 Difference]: Start difference. First operand 7233 states and 18709 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:38,447 INFO L93 Difference]: Finished difference Result 12295 states and 30364 transitions. [2021-08-06 19:54:38,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:54:38,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:38,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:38,468 INFO L225 Difference]: With dead ends: 12295 [2021-08-06 19:54:38,468 INFO L226 Difference]: Without dead ends: 12213 [2021-08-06 19:54:38,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12213 states. [2021-08-06 19:54:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12213 to 7726. [2021-08-06 19:54:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7726 states, 7725 states have (on average 2.493462783171521) internal successors, (19262), 7725 states have internal predecessors, (19262), 0 states have call successors, (0), 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 19:54:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7726 states to 7726 states and 19262 transitions. [2021-08-06 19:54:38,594 INFO L78 Accepts]: Start accepts. Automaton has 7726 states and 19262 transitions. Word has length 39 [2021-08-06 19:54:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:38,594 INFO L470 AbstractCegarLoop]: Abstraction has 7726 states and 19262 transitions. [2021-08-06 19:54:38,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:38,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7726 states and 19262 transitions. [2021-08-06 19:54:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:38,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:38,605 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] [2021-08-06 19:54:38,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-06 19:54:38,605 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:38,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:38,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1416786248, now seen corresponding path program 10 times [2021-08-06 19:54:38,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:38,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600745483] [2021-08-06 19:54:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:38,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:38,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:38,653 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 19:54:38,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:38,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600745483] [2021-08-06 19:54:38,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600745483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:38,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:38,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-06 19:54:38,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866702869] [2021-08-06 19:54:38,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-06 19:54:38,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-06 19:54:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-06 19:54:38,654 INFO L87 Difference]: Start difference. First operand 7726 states and 19262 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:38,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:38,913 INFO L93 Difference]: Finished difference Result 10366 states and 24312 transitions. [2021-08-06 19:54:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:54:38,914 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:38,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:38,928 INFO L225 Difference]: With dead ends: 10366 [2021-08-06 19:54:38,929 INFO L226 Difference]: Without dead ends: 9897 [2021-08-06 19:54:38,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:54:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9897 states. [2021-08-06 19:54:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9897 to 7051. [2021-08-06 19:54:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7051 states, 7050 states have (on average 2.440851063829787) internal successors, (17208), 7050 states have internal predecessors, (17208), 0 states have call successors, (0), 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 19:54:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7051 states to 7051 states and 17208 transitions. [2021-08-06 19:54:39,158 INFO L78 Accepts]: Start accepts. Automaton has 7051 states and 17208 transitions. Word has length 39 [2021-08-06 19:54:39,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:39,158 INFO L470 AbstractCegarLoop]: Abstraction has 7051 states and 17208 transitions. [2021-08-06 19:54:39,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:39,158 INFO L276 IsEmpty]: Start isEmpty. Operand 7051 states and 17208 transitions. [2021-08-06 19:54:39,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:39,168 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:39,168 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] [2021-08-06 19:54:39,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-06 19:54:39,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:39,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:39,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1339449392, now seen corresponding path program 11 times [2021-08-06 19:54:39,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:39,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514600162] [2021-08-06 19:54:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:39,169 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:39,252 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 19:54:39,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:39,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514600162] [2021-08-06 19:54:39,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514600162] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:39,253 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:39,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:54:39,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707805612] [2021-08-06 19:54:39,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:54:39,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:39,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:54:39,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:39,254 INFO L87 Difference]: Start difference. First operand 7051 states and 17208 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:39,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:39,642 INFO L93 Difference]: Finished difference Result 10070 states and 23892 transitions. [2021-08-06 19:54:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-08-06 19:54:39,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:39,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:39,659 INFO L225 Difference]: With dead ends: 10070 [2021-08-06 19:54:39,659 INFO L226 Difference]: Without dead ends: 9745 [2021-08-06 19:54:39,659 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2021-08-06 19:54:39,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9745 states. [2021-08-06 19:54:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9745 to 6919. [2021-08-06 19:54:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 6918 states have (on average 2.452153801676785) internal successors, (16964), 6918 states have internal predecessors, (16964), 0 states have call successors, (0), 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 19:54:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 16964 transitions. [2021-08-06 19:54:39,852 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 16964 transitions. Word has length 39 [2021-08-06 19:54:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:39,852 INFO L470 AbstractCegarLoop]: Abstraction has 6919 states and 16964 transitions. [2021-08-06 19:54:39,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 16964 transitions. [2021-08-06 19:54:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:39,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:39,863 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] [2021-08-06 19:54:39,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-06 19:54:39,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:39,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1170635940, now seen corresponding path program 12 times [2021-08-06 19:54:39,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:39,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226191662] [2021-08-06 19:54:39,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:39,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:39,912 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 19:54:39,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:39,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226191662] [2021-08-06 19:54:39,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226191662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:39,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:39,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-06 19:54:39,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223407481] [2021-08-06 19:54:39,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-06 19:54:39,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-06 19:54:39,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-06 19:54:39,913 INFO L87 Difference]: Start difference. First operand 6919 states and 16964 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:40,031 INFO L93 Difference]: Finished difference Result 11577 states and 28104 transitions. [2021-08-06 19:54:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-06 19:54:40,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:40,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:40,054 INFO L225 Difference]: With dead ends: 11577 [2021-08-06 19:54:40,054 INFO L226 Difference]: Without dead ends: 11577 [2021-08-06 19:54:40,054 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:54:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11577 states. [2021-08-06 19:54:40,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11577 to 6883. [2021-08-06 19:54:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6883 states, 6882 states have (on average 2.433449578610869) internal successors, (16747), 6882 states have internal predecessors, (16747), 0 states have call successors, (0), 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 19:54:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 16747 transitions. [2021-08-06 19:54:40,175 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 16747 transitions. Word has length 39 [2021-08-06 19:54:40,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:40,176 INFO L470 AbstractCegarLoop]: Abstraction has 6883 states and 16747 transitions. [2021-08-06 19:54:40,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 16747 transitions. [2021-08-06 19:54:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:40,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:40,185 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] [2021-08-06 19:54:40,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-06 19:54:40,186 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:40,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:40,186 INFO L82 PathProgramCache]: Analyzing trace with hash -2088074600, now seen corresponding path program 13 times [2021-08-06 19:54:40,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:40,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947882510] [2021-08-06 19:54:40,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:40,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:40,261 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 19:54:40,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:40,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947882510] [2021-08-06 19:54:40,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947882510] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:40,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:40,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:54:40,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948529314] [2021-08-06 19:54:40,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:54:40,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:40,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:54:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:54:40,263 INFO L87 Difference]: Start difference. First operand 6883 states and 16747 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:40,546 INFO L93 Difference]: Finished difference Result 11905 states and 28206 transitions. [2021-08-06 19:54:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:54:40,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:40,565 INFO L225 Difference]: With dead ends: 11905 [2021-08-06 19:54:40,565 INFO L226 Difference]: Without dead ends: 11809 [2021-08-06 19:54:40,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 65.3ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:54:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11809 states. [2021-08-06 19:54:40,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11809 to 7093. [2021-08-06 19:54:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7093 states, 7092 states have (on average 2.4077834179357023) internal successors, (17076), 7092 states have internal predecessors, (17076), 0 states have call successors, (0), 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 19:54:40,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7093 states to 7093 states and 17076 transitions. [2021-08-06 19:54:40,677 INFO L78 Accepts]: Start accepts. Automaton has 7093 states and 17076 transitions. Word has length 39 [2021-08-06 19:54:40,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:40,677 INFO L470 AbstractCegarLoop]: Abstraction has 7093 states and 17076 transitions. [2021-08-06 19:54:40,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7093 states and 17076 transitions. [2021-08-06 19:54:40,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:40,687 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:40,687 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] [2021-08-06 19:54:40,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-06 19:54:40,687 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:40,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1598844582, now seen corresponding path program 14 times [2021-08-06 19:54:40,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:40,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122251573] [2021-08-06 19:54:40,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:40,688 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:40,728 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 19:54:40,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:40,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122251573] [2021-08-06 19:54:40,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122251573] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:40,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:40,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:54:40,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553029539] [2021-08-06 19:54:40,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:54:40,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:40,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:54:40,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:40,729 INFO L87 Difference]: Start difference. First operand 7093 states and 17076 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:40,893 INFO L93 Difference]: Finished difference Result 10183 states and 22901 transitions. [2021-08-06 19:54:40,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:54:40,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:40,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:40,910 INFO L225 Difference]: With dead ends: 10183 [2021-08-06 19:54:40,910 INFO L226 Difference]: Without dead ends: 9859 [2021-08-06 19:54:40,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 32.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9859 states. [2021-08-06 19:54:40,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9859 to 5471. [2021-08-06 19:54:40,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5471 states, 5470 states have (on average 2.240402193784278) internal successors, (12255), 5470 states have internal predecessors, (12255), 0 states have call successors, (0), 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 19:54:40,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5471 states to 5471 states and 12255 transitions. [2021-08-06 19:54:40,995 INFO L78 Accepts]: Start accepts. Automaton has 5471 states and 12255 transitions. Word has length 39 [2021-08-06 19:54:40,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:40,995 INFO L470 AbstractCegarLoop]: Abstraction has 5471 states and 12255 transitions. [2021-08-06 19:54:40,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:40,996 INFO L276 IsEmpty]: Start isEmpty. Operand 5471 states and 12255 transitions. [2021-08-06 19:54:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:41,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:41,002 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] [2021-08-06 19:54:41,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-06 19:54:41,002 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1578820728, now seen corresponding path program 15 times [2021-08-06 19:54:41,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:41,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523224705] [2021-08-06 19:54:41,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:41,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:41,058 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 19:54:41,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:41,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523224705] [2021-08-06 19:54:41,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523224705] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:41,059 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:41,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:54:41,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761067282] [2021-08-06 19:54:41,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:54:41,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:54:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:54:41,060 INFO L87 Difference]: Start difference. First operand 5471 states and 12255 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:41,338 INFO L93 Difference]: Finished difference Result 9553 states and 21275 transitions. [2021-08-06 19:54:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:54:41,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:41,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:41,353 INFO L225 Difference]: With dead ends: 9553 [2021-08-06 19:54:41,353 INFO L226 Difference]: Without dead ends: 8925 [2021-08-06 19:54:41,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:54:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states. [2021-08-06 19:54:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 5201. [2021-08-06 19:54:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5201 states, 5200 states have (on average 2.2348076923076925) internal successors, (11621), 5200 states have internal predecessors, (11621), 0 states have call successors, (0), 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 19:54:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5201 states to 5201 states and 11621 transitions. [2021-08-06 19:54:41,437 INFO L78 Accepts]: Start accepts. Automaton has 5201 states and 11621 transitions. Word has length 39 [2021-08-06 19:54:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:41,437 INFO L470 AbstractCegarLoop]: Abstraction has 5201 states and 11621 transitions. [2021-08-06 19:54:41,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5201 states and 11621 transitions. [2021-08-06 19:54:41,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:41,443 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:41,444 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] [2021-08-06 19:54:41,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-06 19:54:41,444 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:41,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1049520996, now seen corresponding path program 16 times [2021-08-06 19:54:41,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:41,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118207530] [2021-08-06 19:54:41,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:41,444 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:41,490 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 19:54:41,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:41,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118207530] [2021-08-06 19:54:41,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118207530] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:41,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:41,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:54:41,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856107181] [2021-08-06 19:54:41,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:54:41,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:41,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:54:41,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:41,491 INFO L87 Difference]: Start difference. First operand 5201 states and 11621 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:41,657 INFO L93 Difference]: Finished difference Result 9227 states and 20534 transitions. [2021-08-06 19:54:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:54:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:41,670 INFO L225 Difference]: With dead ends: 9227 [2021-08-06 19:54:41,670 INFO L226 Difference]: Without dead ends: 9124 [2021-08-06 19:54:41,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:41,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9124 states. [2021-08-06 19:54:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9124 to 4832. [2021-08-06 19:54:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 4831 states have (on average 2.1898157731318566) internal successors, (10579), 4831 states have internal predecessors, (10579), 0 states have call successors, (0), 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 19:54:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 10579 transitions. [2021-08-06 19:54:41,756 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 10579 transitions. Word has length 39 [2021-08-06 19:54:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 10579 transitions. [2021-08-06 19:54:41,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:41,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 10579 transitions. [2021-08-06 19:54:41,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:41,762 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:41,762 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] [2021-08-06 19:54:41,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-06 19:54:41,762 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:41,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:41,763 INFO L82 PathProgramCache]: Analyzing trace with hash 210058070, now seen corresponding path program 17 times [2021-08-06 19:54:41,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:41,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688937564] [2021-08-06 19:54:41,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:41,763 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:41,818 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 19:54:41,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:41,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688937564] [2021-08-06 19:54:41,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688937564] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:41,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:41,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:54:41,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609577820] [2021-08-06 19:54:41,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:54:41,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:41,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:54:41,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:54:41,820 INFO L87 Difference]: Start difference. First operand 4832 states and 10579 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:42,087 INFO L93 Difference]: Finished difference Result 8718 states and 19359 transitions. [2021-08-06 19:54:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:54:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:42,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:42,100 INFO L225 Difference]: With dead ends: 8718 [2021-08-06 19:54:42,100 INFO L226 Difference]: Without dead ends: 8538 [2021-08-06 19:54:42,100 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:54:42,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8538 states. [2021-08-06 19:54:42,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8538 to 4708. [2021-08-06 19:54:42,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 2.1939664329721693) internal successors, (10327), 4707 states have internal predecessors, (10327), 0 states have call successors, (0), 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 19:54:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 10327 transitions. [2021-08-06 19:54:42,177 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 10327 transitions. Word has length 39 [2021-08-06 19:54:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 4708 states and 10327 transitions. [2021-08-06 19:54:42,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 10327 transitions. [2021-08-06 19:54:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:42,183 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:42,183 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] [2021-08-06 19:54:42,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-06 19:54:42,183 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:42,184 INFO L82 PathProgramCache]: Analyzing trace with hash 690380214, now seen corresponding path program 18 times [2021-08-06 19:54:42,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:42,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127123102] [2021-08-06 19:54:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:42,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:42,229 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 19:54:42,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:42,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127123102] [2021-08-06 19:54:42,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127123102] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:42,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:42,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:54:42,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349511348] [2021-08-06 19:54:42,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:54:42,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:42,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:54:42,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:54:42,231 INFO L87 Difference]: Start difference. First operand 4708 states and 10327 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:42,343 INFO L93 Difference]: Finished difference Result 7454 states and 16966 transitions. [2021-08-06 19:54:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:54:42,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:42,355 INFO L225 Difference]: With dead ends: 7454 [2021-08-06 19:54:42,356 INFO L226 Difference]: Without dead ends: 7184 [2021-08-06 19:54:42,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 17.3ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:42,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2021-08-06 19:54:42,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 3818. [2021-08-06 19:54:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3818 states, 3817 states have (on average 2.2418129421011264) internal successors, (8557), 3817 states have internal predecessors, (8557), 0 states have call successors, (0), 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 19:54:42,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3818 states to 3818 states and 8557 transitions. [2021-08-06 19:54:42,420 INFO L78 Accepts]: Start accepts. Automaton has 3818 states and 8557 transitions. Word has length 39 [2021-08-06 19:54:42,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:42,420 INFO L470 AbstractCegarLoop]: Abstraction has 3818 states and 8557 transitions. [2021-08-06 19:54:42,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3818 states and 8557 transitions. [2021-08-06 19:54:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:42,425 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:42,425 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] [2021-08-06 19:54:42,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-06 19:54:42,425 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:42,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1153991480, now seen corresponding path program 19 times [2021-08-06 19:54:42,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:42,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049432994] [2021-08-06 19:54:42,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:42,426 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:42,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:42,472 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 19:54:42,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:42,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049432994] [2021-08-06 19:54:42,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049432994] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:42,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:42,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:54:42,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523510788] [2021-08-06 19:54:42,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:54:42,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:42,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:54:42,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:42,474 INFO L87 Difference]: Start difference. First operand 3818 states and 8557 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:42,636 INFO L93 Difference]: Finished difference Result 4758 states and 10509 transitions. [2021-08-06 19:54:42,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:54:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:42,641 INFO L225 Difference]: With dead ends: 4758 [2021-08-06 19:54:42,641 INFO L226 Difference]: Without dead ends: 3583 [2021-08-06 19:54:42,642 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 37.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:42,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2021-08-06 19:54:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 2189. [2021-08-06 19:54:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 2188 states have (on average 2.259597806215722) internal successors, (4944), 2188 states have internal predecessors, (4944), 0 states have call successors, (0), 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 19:54:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 4944 transitions. [2021-08-06 19:54:42,668 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 4944 transitions. Word has length 39 [2021-08-06 19:54:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:42,669 INFO L470 AbstractCegarLoop]: Abstraction has 2189 states and 4944 transitions. [2021-08-06 19:54:42,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 4944 transitions. [2021-08-06 19:54:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:42,671 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:42,671 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] [2021-08-06 19:54:42,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-06 19:54:42,671 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:42,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:42,672 INFO L82 PathProgramCache]: Analyzing trace with hash 197406746, now seen corresponding path program 20 times [2021-08-06 19:54:42,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:42,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665069173] [2021-08-06 19:54:42,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:42,672 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:42,729 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 19:54:42,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:42,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665069173] [2021-08-06 19:54:42,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665069173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:42,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:42,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:54:42,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479130331] [2021-08-06 19:54:42,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:54:42,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:42,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:54:42,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:54:42,730 INFO L87 Difference]: Start difference. First operand 2189 states and 4944 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:42,955 INFO L93 Difference]: Finished difference Result 3425 states and 7696 transitions. [2021-08-06 19:54:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-06 19:54:42,955 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:42,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:42,958 INFO L225 Difference]: With dead ends: 3425 [2021-08-06 19:54:42,958 INFO L226 Difference]: Without dead ends: 2329 [2021-08-06 19:54:42,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 63.5ms TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2021-08-06 19:54:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2329 states. [2021-08-06 19:54:42,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2329 to 1645. [2021-08-06 19:54:42,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1644 states have (on average 2.2950121654501214) internal successors, (3773), 1644 states have internal predecessors, (3773), 0 states have call successors, (0), 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 19:54:42,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 3773 transitions. [2021-08-06 19:54:42,976 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 3773 transitions. Word has length 39 [2021-08-06 19:54:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:42,976 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 3773 transitions. [2021-08-06 19:54:42,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 3773 transitions. [2021-08-06 19:54:42,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:42,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:42,978 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] [2021-08-06 19:54:42,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-06 19:54:42,978 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash 232388092, now seen corresponding path program 21 times [2021-08-06 19:54:42,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:42,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852907312] [2021-08-06 19:54:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:42,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:42,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:43,041 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 19:54:43,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:43,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852907312] [2021-08-06 19:54:43,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852907312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:43,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:43,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-06 19:54:43,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393585295] [2021-08-06 19:54:43,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-06 19:54:43,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-06 19:54:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:43,042 INFO L87 Difference]: Start difference. First operand 1645 states and 3773 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:43,231 INFO L93 Difference]: Finished difference Result 1777 states and 4027 transitions. [2021-08-06 19:54:43,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-06 19:54:43,231 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:43,233 INFO L225 Difference]: With dead ends: 1777 [2021-08-06 19:54:43,233 INFO L226 Difference]: Without dead ends: 1426 [2021-08-06 19:54:43,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 80.1ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-08-06 19:54:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1426 states. [2021-08-06 19:54:43,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1426 to 1426. [2021-08-06 19:54:43,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1425 states have (on average 2.3480701754385964) internal successors, (3346), 1425 states have internal predecessors, (3346), 0 states have call successors, (0), 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 19:54:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 3346 transitions. [2021-08-06 19:54:43,246 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 3346 transitions. Word has length 39 [2021-08-06 19:54:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:43,247 INFO L470 AbstractCegarLoop]: Abstraction has 1426 states and 3346 transitions. [2021-08-06 19:54:43,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 3346 transitions. [2021-08-06 19:54:43,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:43,248 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:43,248 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] [2021-08-06 19:54:43,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-06 19:54:43,248 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:43,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:43,249 INFO L82 PathProgramCache]: Analyzing trace with hash 2068277220, now seen corresponding path program 22 times [2021-08-06 19:54:43,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:43,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035636299] [2021-08-06 19:54:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:43,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:43,288 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 19:54:43,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:43,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035636299] [2021-08-06 19:54:43,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035636299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:43,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:43,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-08-06 19:54:43,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047464178] [2021-08-06 19:54:43,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-06 19:54:43,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-06 19:54:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-06 19:54:43,289 INFO L87 Difference]: Start difference. First operand 1426 states and 3346 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:43,380 INFO L93 Difference]: Finished difference Result 1274 states and 2969 transitions. [2021-08-06 19:54:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-06 19:54:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:43,382 INFO L225 Difference]: With dead ends: 1274 [2021-08-06 19:54:43,382 INFO L226 Difference]: Without dead ends: 1238 [2021-08-06 19:54:43,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:43,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2021-08-06 19:54:43,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 902. [2021-08-06 19:54:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 901 states have (on average 2.297447280799112) internal successors, (2070), 901 states have internal predecessors, (2070), 0 states have call successors, (0), 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 19:54:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 2070 transitions. [2021-08-06 19:54:43,392 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 2070 transitions. Word has length 39 [2021-08-06 19:54:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:43,392 INFO L470 AbstractCegarLoop]: Abstraction has 902 states and 2070 transitions. [2021-08-06 19:54:43,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 2070 transitions. [2021-08-06 19:54:43,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:43,393 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:43,393 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] [2021-08-06 19:54:43,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-06 19:54:43,393 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:43,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:43,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1651981796, now seen corresponding path program 23 times [2021-08-06 19:54:43,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:43,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265660574] [2021-08-06 19:54:43,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:43,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:43,437 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 19:54:43,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:43,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265660574] [2021-08-06 19:54:43,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265660574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:43,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:43,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-06 19:54:43,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147592295] [2021-08-06 19:54:43,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-06 19:54:43,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:43,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-06 19:54:43,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-08-06 19:54:43,439 INFO L87 Difference]: Start difference. First operand 902 states and 2070 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:43,546 INFO L93 Difference]: Finished difference Result 454 states and 843 transitions. [2021-08-06 19:54:43,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-06 19:54:43,546 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:43,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:43,547 INFO L225 Difference]: With dead ends: 454 [2021-08-06 19:54:43,547 INFO L226 Difference]: Without dead ends: 241 [2021-08-06 19:54:43,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 33.5ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-08-06 19:54:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2021-08-06 19:54:43,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 173. [2021-08-06 19:54:43,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.8837209302325582) internal successors, (324), 172 states have internal predecessors, (324), 0 states have call successors, (0), 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 19:54:43,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 324 transitions. [2021-08-06 19:54:43,549 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 324 transitions. Word has length 39 [2021-08-06 19:54:43,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:43,549 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 324 transitions. [2021-08-06 19:54:43,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,549 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 324 transitions. [2021-08-06 19:54:43,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-08-06 19:54:43,549 INFO L504 BasicCegarLoop]: Found error trace [2021-08-06 19:54:43,549 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] [2021-08-06 19:54:43,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-06 19:54:43,549 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] === [2021-08-06 19:54:43,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-06 19:54:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash -368153492, now seen corresponding path program 24 times [2021-08-06 19:54:43,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-06 19:54:43,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653458097] [2021-08-06 19:54:43,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-06 19:54:43,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-06 19:54:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-06 19:54:43,603 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 19:54:43,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-06 19:54:43,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653458097] [2021-08-06 19:54:43,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653458097] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-06 19:54:43,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-06 19:54:43,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-06 19:54:43,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877044606] [2021-08-06 19:54:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-06 19:54:43,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-06 19:54:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-06 19:54:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-08-06 19:54:43,604 INFO L87 Difference]: Start difference. First operand 173 states and 324 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-06 19:54:43,692 INFO L93 Difference]: Finished difference Result 129 states and 200 transitions. [2021-08-06 19:54:43,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-06 19:54:43,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-08-06 19:54:43,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-06 19:54:43,692 INFO L225 Difference]: With dead ends: 129 [2021-08-06 19:54:43,692 INFO L226 Difference]: Without dead ends: 0 [2021-08-06 19:54:43,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-08-06 19:54:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-06 19:54:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-06 19:54:43,693 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 19:54:43,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-06 19:54:43,693 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2021-08-06 19:54:43,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-06 19:54:43,693 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-06 19:54:43,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-06 19:54:43,693 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-06 19:54:43,693 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATION [2021-08-06 19:54:43,695 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4INUSE_VIOLATION [2021-08-06 19:54:43,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-06 19:54:43,698 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-06 19:54:43,698 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-06 19:54:43,699 INFO L202 PluginConnector]: Adding new model ticket-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.08 07:54:43 BasicIcfg [2021-08-06 19:54:43,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-06 19:54:43,700 INFO L168 Benchmark]: Toolchain (without parser) took 12910.85 ms. Allocated memory was 215.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 195.9 MB in the beginning and 610.6 MB in the end (delta: -414.7 MB). Peak memory consumption was 830.4 MB. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 215.0 MB. Free memory is still 197.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.37 ms. Allocated memory is still 215.0 MB. Free memory was 195.8 MB in the beginning and 194.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 INFO L168 Benchmark]: Boogie Preprocessor took 11.45 ms. Allocated memory is still 215.0 MB. Free memory was 194.2 MB in the beginning and 193.3 MB in the end (delta: 989.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 INFO L168 Benchmark]: RCFGBuilder took 246.47 ms. Allocated memory is still 215.0 MB. Free memory was 193.2 MB in the beginning and 178.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 INFO L168 Benchmark]: TraceAbstraction took 12628.67 ms. Allocated memory was 215.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 177.5 MB in the beginning and 610.6 MB in the end (delta: -433.1 MB). Peak memory consumption was 810.5 MB. Max. memory is 8.0 GB. [2021-08-06 19:54:43,700 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 0.12 ms. Allocated memory is still 215.0 MB. Free memory is still 197.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 20.37 ms. Allocated memory is still 215.0 MB. Free memory was 195.8 MB in the beginning and 194.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.45 ms. Allocated memory is still 215.0 MB. Free memory was 194.2 MB in the beginning and 193.3 MB in the end (delta: 989.6 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 246.47 ms. Allocated memory is still 215.0 MB. Free memory was 193.2 MB in the beginning and 178.1 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12628.67 ms. Allocated memory was 215.0 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 177.5 MB in the beginning and 610.6 MB in the end (delta: -433.1 MB). Peak memory consumption was 810.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 60861, positive: 56190, positive conditional: 56190, positive unconditional: 0, negative: 4671, negative conditional: 4671, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 60861, positive: 56190, positive conditional: 0, positive unconditional: 56190, negative: 4671, negative conditional: 0, negative unconditional: 4671, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 494, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 494, positive: 419, positive conditional: 0, positive unconditional: 419, negative: 75, negative conditional: 0, negative unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 75, positive: 35, positive conditional: 0, positive unconditional: 35, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 173, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 96, negative conditional: 0, negative unconditional: 96, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 60861, positive: 55736, positive conditional: 0, positive unconditional: 55736, negative: 4631, negative conditional: 0, negative unconditional: 4631, unknown: 494, unknown conditional: 0, unknown unconditional: 494] , Statistics on independence cache: Total cache size (in pairs): 494, Positive cache size: 454, Positive conditional cache size: 0, Positive unconditional cache size: 454, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40, 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: 95]: 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 11 procedures, 83 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 12488.7ms, OverallIterations: 24, TraceHistogramMax: 1, EmptinessCheckTime: 293.0ms, AutomataDifference: 6234.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1183.8ms, PartialOrderReductionTime: 1170.0ms, HoareTripleCheckerStatistics: 1289 SDtfs, 2556 SDslu, 5401 SDs, 0 SdLazy, 6935 SolverSat, 1271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2935.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 318 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 275 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1370.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12444occurred in iteration=0, InterpolantAutomatonStates: 263, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 2961.4ms AutomataMinimizationTime, 24 MinimizatonAttempts, 79408 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.0ms SsaConstructionTime, 139.7ms SatisfiabilityAnalysisTime, 1476.8ms InterpolantComputationTime, 936 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 2505 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 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 19:54:43,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...