/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd [2022-02-15 13:41:00,587 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 13:41:00,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 13:41:00,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 13:41:00,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-02-15 13:41:00,722 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 13:41:00,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 13:41:00,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-15 13:41:00,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-15 13:41:00,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-15 13:41:00,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-15 13:41:00,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * Use SBE=true [2022-02-15 13:41:00,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 13:41:00,724 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 13:41:00,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 13:41:00,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:41:00,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 13:41:00,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-15 13:41:00,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 13:41:00,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 13:41:00,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 13:41:00,933 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-15 13:41:00,936 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-15 13:41:00,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2022-02-15 13:41:00,937 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2022-02-15 13:41:00,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 13:41:00,969 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 13:41:00,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-15 13:41:00,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-15 13:41:00,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-15 13:41:00,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:00,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,002 INFO L137 Inliner]: procedures = 7, calls = 6, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-15 13:41:01,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-15 13:41:01,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 13:41:01,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 13:41:01,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 13:41:01,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 13:41:01,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 13:41:01,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 13:41:01,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 13:41:01,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/1) ... [2022-02-15 13:41:01,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 13:41:01,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 13:41:01,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-15 13:41:01,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-15 13:41:01,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-02-15 13:41:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-02-15 13:41:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-02-15 13:41:01,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-02-15 13:41:01,098 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-02-15 13:41:01,098 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-02-15 13:41:01,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-15 13:41:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 13:41:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 13:41:01,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-02-15 13:41:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-02-15 13:41:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-02-15 13:41:01,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-02-15 13:41:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-02-15 13:41:01,099 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-02-15 13:41:01,099 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2022-02-15 13:41:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-02-15 13:41:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-02-15 13:41:01,100 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2022-02-15 13:41:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2022-02-15 13:41:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2022-02-15 13:41:01,100 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-15 13:41:01,136 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 13:41:01,137 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 13:41:01,261 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 13:41:01,266 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 13:41:01,266 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-15 13:41:01,268 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:41:01 BoogieIcfgContainer [2022-02-15 13:41:01,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 13:41:01,269 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 13:41:01,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 13:41:01,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 13:41:01,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 01:41:00" (1/2) ... [2022-02-15 13:41:01,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfda502 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:41:01, skipping insertion in model container [2022-02-15 13:41:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:41:01" (2/2) ... [2022-02-15 13:41:01,285 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2022-02-15 13:41:01,289 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-15 13:41:01,289 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-15 13:41:01,289 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 13:41:01,289 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-15 13:41:01,360 INFO L148 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2022-02-15 13:41:01,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 13:41:01,391 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-15 13:41:01,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-02-15 13:41:01,399 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2022-02-15 13:41:01,701 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:01,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:01,786 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:01,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:01,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1582648075, now seen corresponding path program 1 times [2022-02-15 13:41:01,831 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:01,832 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463719841] [2022-02-15 13:41:01,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:01,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:02,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:02,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:02,024 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463719841] [2022-02-15 13:41:02,024 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463719841] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:02,024 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:02,024 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:41:02,025 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332309327] [2022-02-15 13:41:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:02,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:41:02,029 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:41:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:41:02,083 INFO L87 Difference]: Start difference. First operand has 7229 states, 7228 states have (on average 3.6694798007747647) internal successors, (26523), 7228 states have internal predecessors, (26523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:02,228 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2022-02-15 13:41:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:41:02,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:02,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:02,279 INFO L225 Difference]: With dead ends: 5614 [2022-02-15 13:41:02,279 INFO L226 Difference]: Without dead ends: 5614 [2022-02-15 13:41:02,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:41:02,285 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 22 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:02,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 13:41:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2022-02-15 13:41:02,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2022-02-15 13:41:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5614 states, 5613 states have (on average 3.5763406378050955) internal successors, (20074), 5613 states have internal predecessors, (20074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2022-02-15 13:41:02,633 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2022-02-15 13:41:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:02,634 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2022-02-15 13:41:02,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2022-02-15 13:41:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:02,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:02,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:02,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 13:41:02,652 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:02,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2098813663, now seen corresponding path program 2 times [2022-02-15 13:41:02,655 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:02,655 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244723229] [2022-02-15 13:41:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:02,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:02,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:02,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244723229] [2022-02-15 13:41:02,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244723229] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:02,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:02,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-15 13:41:02,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817534146] [2022-02-15 13:41:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:02,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-15 13:41:02,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-15 13:41:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:41:02,726 INFO L87 Difference]: Start difference. First operand 5614 states and 20074 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:02,798 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2022-02-15 13:41:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-15 13:41:02,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:02,822 INFO L225 Difference]: With dead ends: 4822 [2022-02-15 13:41:02,822 INFO L226 Difference]: Without dead ends: 4822 [2022-02-15 13:41:02,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-15 13:41:02,823 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 18 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:02,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 80 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-15 13:41:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2022-02-15 13:41:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2022-02-15 13:41:02,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4822 states, 4821 states have (on average 3.5490562124040657) internal successors, (17110), 4821 states have internal predecessors, (17110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2022-02-15 13:41:02,988 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2022-02-15 13:41:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:02,988 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2022-02-15 13:41:02,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2022-02-15 13:41:03,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:03,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:03,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:03,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 13:41:03,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:03,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:03,002 INFO L85 PathProgramCache]: Analyzing trace with hash 949523355, now seen corresponding path program 3 times [2022-02-15 13:41:03,003 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:03,003 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621991366] [2022-02-15 13:41:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:03,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:03,477 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:03,477 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621991366] [2022-02-15 13:41:03,477 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621991366] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:03,477 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:03,477 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:03,477 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026865822] [2022-02-15 13:41:03,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:03,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:03,478 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:03,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:03,479 INFO L87 Difference]: Start difference. First operand 4822 states and 17110 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:05,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:05,013 INFO L93 Difference]: Finished difference Result 6172 states and 21633 transitions. [2022-02-15 13:41:05,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:41:05,014 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:05,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:05,076 INFO L225 Difference]: With dead ends: 6172 [2022-02-15 13:41:05,077 INFO L226 Difference]: Without dead ends: 6045 [2022-02-15 13:41:05,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:41:05,078 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 368 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 2630 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 2649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:05,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 1324 Invalid, 2649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2630 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:41:05,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2022-02-15 13:41:05,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5006. [2022-02-15 13:41:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 5005 states have (on average 3.5384615384615383) internal successors, (17710), 5005 states have internal predecessors, (17710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 17710 transitions. [2022-02-15 13:41:05,205 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 17710 transitions. Word has length 47 [2022-02-15 13:41:05,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:05,205 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 17710 transitions. [2022-02-15 13:41:05,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:05,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 17710 transitions. [2022-02-15 13:41:05,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:05,217 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:05,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:05,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-15 13:41:05,218 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:05,220 INFO L85 PathProgramCache]: Analyzing trace with hash -401225249, now seen corresponding path program 4 times [2022-02-15 13:41:05,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:05,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227908973] [2022-02-15 13:41:05,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:05,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:05,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:05,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227908973] [2022-02-15 13:41:05,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227908973] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:05,625 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:05,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:05,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317316859] [2022-02-15 13:41:05,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:05,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:05,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:05,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:05,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:05,627 INFO L87 Difference]: Start difference. First operand 5006 states and 17710 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:07,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:07,773 INFO L93 Difference]: Finished difference Result 8462 states and 29832 transitions. [2022-02-15 13:41:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:41:07,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:07,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:07,799 INFO L225 Difference]: With dead ends: 8462 [2022-02-15 13:41:07,799 INFO L226 Difference]: Without dead ends: 8373 [2022-02-15 13:41:07,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:41:07,801 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 565 mSDsluCounter, 3134 mSDsCounter, 0 mSdLazyCounter, 3750 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:07,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 1969 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3750 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:41:07,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2022-02-15 13:41:07,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 5198. [2022-02-15 13:41:07,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 5197 states have (on average 3.529343852222436) internal successors, (18342), 5197 states have internal predecessors, (18342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 18342 transitions. [2022-02-15 13:41:08,011 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 18342 transitions. Word has length 47 [2022-02-15 13:41:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:08,012 INFO L470 AbstractCegarLoop]: Abstraction has 5198 states and 18342 transitions. [2022-02-15 13:41:08,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 18342 transitions. [2022-02-15 13:41:08,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:08,027 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:08,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:08,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-15 13:41:08,028 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:08,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:08,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1251877157, now seen corresponding path program 5 times [2022-02-15 13:41:08,029 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:08,029 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796190362] [2022-02-15 13:41:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:08,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:08,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:08,352 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796190362] [2022-02-15 13:41:08,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796190362] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:08,352 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:08,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:08,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242397368] [2022-02-15 13:41:08,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:08,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:08,353 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:08,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:08,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:08,353 INFO L87 Difference]: Start difference. First operand 5198 states and 18342 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:10,484 INFO L93 Difference]: Finished difference Result 8595 states and 30668 transitions. [2022-02-15 13:41:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 13:41:10,484 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:10,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:10,542 INFO L225 Difference]: With dead ends: 8595 [2022-02-15 13:41:10,542 INFO L226 Difference]: Without dead ends: 8492 [2022-02-15 13:41:10,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=311, Invalid=2769, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:41:10,543 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 592 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 3986 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 4046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 3986 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:10,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 2026 Invalid, 4046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 3986 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:41:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2022-02-15 13:41:10,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 5186. [2022-02-15 13:41:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5185 states have (on average 3.5305689488910317) internal successors, (18306), 5185 states have internal predecessors, (18306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:10,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 18306 transitions. [2022-02-15 13:41:10,679 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 18306 transitions. Word has length 47 [2022-02-15 13:41:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:10,680 INFO L470 AbstractCegarLoop]: Abstraction has 5186 states and 18306 transitions. [2022-02-15 13:41:10,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 18306 transitions. [2022-02-15 13:41:10,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:10,692 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:10,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:10,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-15 13:41:10,693 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:10,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:10,694 INFO L85 PathProgramCache]: Analyzing trace with hash 923930395, now seen corresponding path program 6 times [2022-02-15 13:41:10,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:10,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967196422] [2022-02-15 13:41:10,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:10,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:10,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:10,997 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:10,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967196422] [2022-02-15 13:41:10,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967196422] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:10,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:10,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:41:10,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519390574] [2022-02-15 13:41:10,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:10,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:41:10,998 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:10,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:41:10,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:41:10,998 INFO L87 Difference]: Start difference. First operand 5186 states and 18306 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:12,758 INFO L93 Difference]: Finished difference Result 7581 states and 26484 transitions. [2022-02-15 13:41:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:41:12,758 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:12,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:12,779 INFO L225 Difference]: With dead ends: 7581 [2022-02-15 13:41:12,779 INFO L226 Difference]: Without dead ends: 7444 [2022-02-15 13:41:12,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:41:12,783 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 453 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 3395 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:12,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1523 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3395 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:41:12,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2022-02-15 13:41:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 5366. [2022-02-15 13:41:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.52022367194781) internal successors, (18886), 5365 states have internal predecessors, (18886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:12,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18886 transitions. [2022-02-15 13:41:12,922 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18886 transitions. Word has length 47 [2022-02-15 13:41:12,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:12,922 INFO L470 AbstractCegarLoop]: Abstraction has 5366 states and 18886 transitions. [2022-02-15 13:41:12,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:12,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18886 transitions. [2022-02-15 13:41:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:12,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:12,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:12,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-02-15 13:41:12,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:12,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:12,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1054944067, now seen corresponding path program 7 times [2022-02-15 13:41:12,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:12,935 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105993777] [2022-02-15 13:41:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:12,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:13,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:13,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:13,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105993777] [2022-02-15 13:41:13,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105993777] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:13,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:13,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:13,238 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677073982] [2022-02-15 13:41:13,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:13,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:13,238 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:13,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:13,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:13,239 INFO L87 Difference]: Start difference. First operand 5366 states and 18886 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:15,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:15,256 INFO L93 Difference]: Finished difference Result 8646 states and 30471 transitions. [2022-02-15 13:41:15,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:41:15,256 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:15,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:15,342 INFO L225 Difference]: With dead ends: 8646 [2022-02-15 13:41:15,342 INFO L226 Difference]: Without dead ends: 8557 [2022-02-15 13:41:15,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:41:15,345 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 601 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1857 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:15,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 1857 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:41:15,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2022-02-15 13:41:15,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 5370. [2022-02-15 13:41:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 5369 states have (on average 3.5190910784131124) internal successors, (18894), 5369 states have internal predecessors, (18894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 18894 transitions. [2022-02-15 13:41:15,447 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 18894 transitions. Word has length 47 [2022-02-15 13:41:15,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:15,447 INFO L470 AbstractCegarLoop]: Abstraction has 5370 states and 18894 transitions. [2022-02-15 13:41:15,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:15,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 18894 transitions. [2022-02-15 13:41:15,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:15,457 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:15,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:15,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-15 13:41:15,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:15,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:15,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1905595975, now seen corresponding path program 8 times [2022-02-15 13:41:15,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:15,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859348940] [2022-02-15 13:41:15,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:15,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:15,736 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:15,736 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859348940] [2022-02-15 13:41:15,736 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859348940] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:15,736 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:15,736 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:15,736 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817457392] [2022-02-15 13:41:15,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:15,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:15,736 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:15,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:15,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:15,737 INFO L87 Difference]: Start difference. First operand 5370 states and 18894 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:18,017 INFO L93 Difference]: Finished difference Result 9233 states and 32861 transitions. [2022-02-15 13:41:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 13:41:18,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:18,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:18,040 INFO L225 Difference]: With dead ends: 9233 [2022-02-15 13:41:18,040 INFO L226 Difference]: Without dead ends: 9102 [2022-02-15 13:41:18,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=330, Invalid=2976, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 13:41:18,042 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 623 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 4110 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 4179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:18,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 2084 Invalid, 4179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4110 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:41:18,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2022-02-15 13:41:18,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5330. [2022-02-15 13:41:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5330 states, 5329 states have (on average 3.5207355976731094) internal successors, (18762), 5329 states have internal predecessors, (18762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:18,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18762 transitions. [2022-02-15 13:41:18,165 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18762 transitions. Word has length 47 [2022-02-15 13:41:18,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:18,166 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 18762 transitions. [2022-02-15 13:41:18,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:18,166 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18762 transitions. [2022-02-15 13:41:18,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:18,177 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:18,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:18,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-15 13:41:18,179 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:18,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:18,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1744544869, now seen corresponding path program 9 times [2022-02-15 13:41:18,179 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:18,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294001964] [2022-02-15 13:41:18,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:18,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:18,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:18,485 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:18,485 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294001964] [2022-02-15 13:41:18,485 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294001964] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:18,485 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:18,485 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:18,485 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976086374] [2022-02-15 13:41:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:18,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:18,486 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:18,486 INFO L87 Difference]: Start difference. First operand 5330 states and 18762 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:20,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:20,029 INFO L93 Difference]: Finished difference Result 6689 states and 23271 transitions. [2022-02-15 13:41:20,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:41:20,029 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:20,045 INFO L225 Difference]: With dead ends: 6689 [2022-02-15 13:41:20,046 INFO L226 Difference]: Without dead ends: 6562 [2022-02-15 13:41:20,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:41:20,049 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 440 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:20,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 1454 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:41:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2022-02-15 13:41:20,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5342. [2022-02-15 13:41:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 5341 states have (on average 3.5184422392810335) internal successors, (18792), 5341 states have internal predecessors, (18792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:20,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 18792 transitions. [2022-02-15 13:41:20,171 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 18792 transitions. Word has length 47 [2022-02-15 13:41:20,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:20,171 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 18792 transitions. [2022-02-15 13:41:20,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 18792 transitions. [2022-02-15 13:41:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:20,182 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:20,183 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:20,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-15 13:41:20,183 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1199673823, now seen corresponding path program 10 times [2022-02-15 13:41:20,183 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:20,183 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037728958] [2022-02-15 13:41:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:20,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:20,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:20,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:20,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037728958] [2022-02-15 13:41:20,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037728958] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:20,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:20,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:20,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637450418] [2022-02-15 13:41:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:20,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:20,493 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:20,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:20,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:20,494 INFO L87 Difference]: Start difference. First operand 5342 states and 18792 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:22,766 INFO L93 Difference]: Finished difference Result 8910 states and 31376 transitions. [2022-02-15 13:41:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:41:22,766 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:22,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:22,787 INFO L225 Difference]: With dead ends: 8910 [2022-02-15 13:41:22,787 INFO L226 Difference]: Without dead ends: 8821 [2022-02-15 13:41:22,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:41:22,789 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 639 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 4111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:22,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2156 Invalid, 4111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:41:22,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2022-02-15 13:41:22,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5358. [2022-02-15 13:41:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 3.516520440545081) internal successors, (18838), 5357 states have internal predecessors, (18838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18838 transitions. [2022-02-15 13:41:22,909 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18838 transitions. Word has length 47 [2022-02-15 13:41:22,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:22,910 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 18838 transitions. [2022-02-15 13:41:22,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:22,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18838 transitions. [2022-02-15 13:41:22,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:22,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:22,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:22,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-15 13:41:22,924 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:22,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash 349021915, now seen corresponding path program 11 times [2022-02-15 13:41:22,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:22,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390313400] [2022-02-15 13:41:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:22,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:23,190 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:23,190 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390313400] [2022-02-15 13:41:23,190 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390313400] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:23,190 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:23,190 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:23,190 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82104055] [2022-02-15 13:41:23,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:23,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:23,191 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:23,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:23,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:23,192 INFO L87 Difference]: Start difference. First operand 5358 states and 18838 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:25,720 INFO L93 Difference]: Finished difference Result 8807 states and 31346 transitions. [2022-02-15 13:41:25,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 13:41:25,720 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:25,740 INFO L225 Difference]: With dead ends: 8807 [2022-02-15 13:41:25,741 INFO L226 Difference]: Without dead ends: 8704 [2022-02-15 13:41:25,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=405, Invalid=3755, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 13:41:25,742 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 699 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2053 SdHoareTripleChecker+Invalid, 4127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:25,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 2053 Invalid, 4127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:41:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2022-02-15 13:41:25,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 5338. [2022-02-15 13:41:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.519955030916245) internal successors, (18786), 5337 states have internal predecessors, (18786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:25,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18786 transitions. [2022-02-15 13:41:25,866 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18786 transitions. Word has length 47 [2022-02-15 13:41:25,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:25,867 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 18786 transitions. [2022-02-15 13:41:25,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18786 transitions. [2022-02-15 13:41:25,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:25,879 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:25,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:25,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-15 13:41:25,879 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:25,880 INFO L85 PathProgramCache]: Analyzing trace with hash -202621511, now seen corresponding path program 12 times [2022-02-15 13:41:25,880 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:25,880 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459208927] [2022-02-15 13:41:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:25,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:26,182 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:26,182 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459208927] [2022-02-15 13:41:26,182 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459208927] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:26,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:26,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:26,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782865032] [2022-02-15 13:41:26,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:26,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:26,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:26,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:26,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:26,184 INFO L87 Difference]: Start difference. First operand 5338 states and 18786 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:27,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:27,273 INFO L93 Difference]: Finished difference Result 6388 states and 22235 transitions. [2022-02-15 13:41:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:41:27,274 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:27,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:27,304 INFO L225 Difference]: With dead ends: 6388 [2022-02-15 13:41:27,304 INFO L226 Difference]: Without dead ends: 6261 [2022-02-15 13:41:27,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:41:27,305 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 370 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:27,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1457 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:41:27,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2022-02-15 13:41:27,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5350. [2022-02-15 13:41:27,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5350 states, 5349 states have (on average 3.5176668536174986) internal successors, (18816), 5349 states have internal predecessors, (18816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:27,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 18816 transitions. [2022-02-15 13:41:27,470 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 18816 transitions. Word has length 47 [2022-02-15 13:41:27,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:27,470 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 18816 transitions. [2022-02-15 13:41:27,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:27,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 18816 transitions. [2022-02-15 13:41:27,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:27,479 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:27,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:27,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-15 13:41:27,480 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1624749749, now seen corresponding path program 13 times [2022-02-15 13:41:27,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:27,480 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900433203] [2022-02-15 13:41:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:27,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:27,755 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:27,755 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900433203] [2022-02-15 13:41:27,755 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900433203] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:27,755 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:27,755 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:27,755 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160720756] [2022-02-15 13:41:27,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:27,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:27,755 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:27,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:27,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:27,756 INFO L87 Difference]: Start difference. First operand 5350 states and 18816 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:28,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:28,788 INFO L93 Difference]: Finished difference Result 6457 states and 22437 transitions. [2022-02-15 13:41:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:41:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:28,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:28,803 INFO L225 Difference]: With dead ends: 6457 [2022-02-15 13:41:28,803 INFO L226 Difference]: Without dead ends: 6360 [2022-02-15 13:41:28,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:41:28,805 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 379 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:28,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1406 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:41:28,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2022-02-15 13:41:28,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 5356. [2022-02-15 13:41:28,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5356 states, 5355 states have (on average 3.5165266106442576) internal successors, (18831), 5355 states have internal predecessors, (18831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:28,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 18831 transitions. [2022-02-15 13:41:28,903 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 18831 transitions. Word has length 47 [2022-02-15 13:41:28,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:28,903 INFO L470 AbstractCegarLoop]: Abstraction has 5356 states and 18831 transitions. [2022-02-15 13:41:28,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:28,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 18831 transitions. [2022-02-15 13:41:28,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:28,912 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:28,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:28,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-02-15 13:41:28,912 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:28,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:28,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1627423575, now seen corresponding path program 14 times [2022-02-15 13:41:28,913 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:28,913 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397973682] [2022-02-15 13:41:28,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:28,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:29,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:29,254 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:29,254 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397973682] [2022-02-15 13:41:29,254 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397973682] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:29,254 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:29,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:29,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023845146] [2022-02-15 13:41:29,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:29,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:29,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:29,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:29,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:29,256 INFO L87 Difference]: Start difference. First operand 5356 states and 18831 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:30,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:30,632 INFO L93 Difference]: Finished difference Result 6358 states and 22132 transitions. [2022-02-15 13:41:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:41:30,632 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:30,647 INFO L225 Difference]: With dead ends: 6358 [2022-02-15 13:41:30,647 INFO L226 Difference]: Without dead ends: 6249 [2022-02-15 13:41:30,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:41:30,648 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 381 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:30,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1463 Invalid, 3043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:41:30,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2022-02-15 13:41:30,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5338. [2022-02-15 13:41:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 5337 states have (on average 3.5192055461869964) internal successors, (18782), 5337 states have internal predecessors, (18782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:30,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18782 transitions. [2022-02-15 13:41:30,747 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18782 transitions. Word has length 47 [2022-02-15 13:41:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:30,747 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 18782 transitions. [2022-02-15 13:41:30,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:30,747 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18782 transitions. [2022-02-15 13:41:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:30,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:30,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:30,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-15 13:41:30,757 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:30,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash 318951903, now seen corresponding path program 15 times [2022-02-15 13:41:30,757 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:30,757 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216465304] [2022-02-15 13:41:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:30,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:30,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:30,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216465304] [2022-02-15 13:41:30,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216465304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:30,995 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:30,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:30,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144750930] [2022-02-15 13:41:30,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:30,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:30,996 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:30,997 INFO L87 Difference]: Start difference. First operand 5338 states and 18782 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:32,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:32,376 INFO L93 Difference]: Finished difference Result 6590 states and 22853 transitions. [2022-02-15 13:41:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:41:32,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:32,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:32,390 INFO L225 Difference]: With dead ends: 6590 [2022-02-15 13:41:32,390 INFO L226 Difference]: Without dead ends: 6469 [2022-02-15 13:41:32,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:41:32,391 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 492 mSDsluCounter, 2705 mSDsCounter, 0 mSdLazyCounter, 3092 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:32,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1494 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3092 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:41:32,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2022-02-15 13:41:32,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 5344. [2022-02-15 13:41:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5344 states, 5343 states have (on average 3.517686692869175) internal successors, (18795), 5343 states have internal predecessors, (18795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:32,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 18795 transitions. [2022-02-15 13:41:32,485 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 18795 transitions. Word has length 47 [2022-02-15 13:41:32,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:32,485 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 18795 transitions. [2022-02-15 13:41:32,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:32,485 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 18795 transitions. [2022-02-15 13:41:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:32,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:32,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:32,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-15 13:41:32,494 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:32,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:32,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1890373339, now seen corresponding path program 16 times [2022-02-15 13:41:32,494 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:32,494 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836379513] [2022-02-15 13:41:32,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:32,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:32,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:32,756 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:32,756 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836379513] [2022-02-15 13:41:32,756 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836379513] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:32,756 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:32,756 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:32,756 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127086866] [2022-02-15 13:41:32,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:32,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:32,756 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:32,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:32,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:32,757 INFO L87 Difference]: Start difference. First operand 5344 states and 18795 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:34,463 INFO L93 Difference]: Finished difference Result 7051 states and 24466 transitions. [2022-02-15 13:41:34,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:41:34,463 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:34,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:34,478 INFO L225 Difference]: With dead ends: 7051 [2022-02-15 13:41:34,479 INFO L226 Difference]: Without dead ends: 6956 [2022-02-15 13:41:34,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:41:34,480 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 525 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 3653 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:34,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 1698 Invalid, 3701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:41:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2022-02-15 13:41:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 5346. [2022-02-15 13:41:34,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5346 states, 5345 states have (on average 3.517305893358279) internal successors, (18800), 5345 states have internal predecessors, (18800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:34,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 18800 transitions. [2022-02-15 13:41:34,619 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 18800 transitions. Word has length 47 [2022-02-15 13:41:34,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:34,620 INFO L470 AbstractCegarLoop]: Abstraction has 5346 states and 18800 transitions. [2022-02-15 13:41:34,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:34,620 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 18800 transitions. [2022-02-15 13:41:34,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:34,628 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:34,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:34,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-15 13:41:34,629 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:34,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:34,629 INFO L85 PathProgramCache]: Analyzing trace with hash -2105702279, now seen corresponding path program 17 times [2022-02-15 13:41:34,629 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:34,629 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317380512] [2022-02-15 13:41:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:34,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:34,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:34,883 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:34,883 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317380512] [2022-02-15 13:41:34,883 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317380512] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:34,883 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:34,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:34,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112931982] [2022-02-15 13:41:34,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:34,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:34,884 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:34,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:34,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:34,884 INFO L87 Difference]: Start difference. First operand 5346 states and 18800 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:36,191 INFO L93 Difference]: Finished difference Result 6453 states and 22421 transitions. [2022-02-15 13:41:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:41:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:36,205 INFO L225 Difference]: With dead ends: 6453 [2022-02-15 13:41:36,205 INFO L226 Difference]: Without dead ends: 6356 [2022-02-15 13:41:36,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:41:36,206 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 397 mSDsluCounter, 2296 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1279 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:36,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1279 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:41:36,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2022-02-15 13:41:36,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 5352. [2022-02-15 13:41:36,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5352 states, 5351 states have (on average 3.5161652027658383) internal successors, (18815), 5351 states have internal predecessors, (18815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:36,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 18815 transitions. [2022-02-15 13:41:36,322 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 18815 transitions. Word has length 47 [2022-02-15 13:41:36,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:36,322 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 18815 transitions. [2022-02-15 13:41:36,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 18815 transitions. [2022-02-15 13:41:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:36,333 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:36,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:36,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-15 13:41:36,334 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:36,334 INFO L85 PathProgramCache]: Analyzing trace with hash 463844507, now seen corresponding path program 18 times [2022-02-15 13:41:36,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:36,334 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065838416] [2022-02-15 13:41:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:36,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:36,606 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:36,606 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065838416] [2022-02-15 13:41:36,606 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065838416] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:36,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:36,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:36,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517492778] [2022-02-15 13:41:36,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:36,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:36,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:36,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:36,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:36,607 INFO L87 Difference]: Start difference. First operand 5352 states and 18815 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:38,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:38,037 INFO L93 Difference]: Finished difference Result 6354 states and 22116 transitions. [2022-02-15 13:41:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:41:38,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:38,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:38,052 INFO L225 Difference]: With dead ends: 6354 [2022-02-15 13:41:38,052 INFO L226 Difference]: Without dead ends: 6251 [2022-02-15 13:41:38,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:41:38,053 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 383 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:38,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1400 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:41:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2022-02-15 13:41:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5340. [2022-02-15 13:41:38,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5339 states have (on average 3.5188237497658736) internal successors, (18787), 5339 states have internal predecessors, (18787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:38,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 18787 transitions. [2022-02-15 13:41:38,143 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 18787 transitions. Word has length 47 [2022-02-15 13:41:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:38,143 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 18787 transitions. [2022-02-15 13:41:38,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 18787 transitions. [2022-02-15 13:41:38,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:38,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:38,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:38,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-15 13:41:38,152 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:38,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1760511687, now seen corresponding path program 19 times [2022-02-15 13:41:38,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:38,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420415488] [2022-02-15 13:41:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:38,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:38,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:38,375 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:38,375 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420415488] [2022-02-15 13:41:38,375 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420415488] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:38,375 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:38,375 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:38,375 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547951541] [2022-02-15 13:41:38,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:38,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:38,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:38,377 INFO L87 Difference]: Start difference. First operand 5340 states and 18787 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:39,791 INFO L93 Difference]: Finished difference Result 6323 states and 22051 transitions. [2022-02-15 13:41:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:41:39,791 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:39,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:39,804 INFO L225 Difference]: With dead ends: 6323 [2022-02-15 13:41:39,805 INFO L226 Difference]: Without dead ends: 6186 [2022-02-15 13:41:39,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:41:39,805 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 370 mSDsluCounter, 2365 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:39,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1392 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:41:39,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2022-02-15 13:41:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 5382. [2022-02-15 13:41:39,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5108715852072105) internal successors, (18892), 5381 states have internal predecessors, (18892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18892 transitions. [2022-02-15 13:41:39,895 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18892 transitions. Word has length 47 [2022-02-15 13:41:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:39,896 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18892 transitions. [2022-02-15 13:41:39,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18892 transitions. [2022-02-15 13:41:39,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:39,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:39,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:39,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-15 13:41:39,905 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:39,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:39,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1725515001, now seen corresponding path program 20 times [2022-02-15 13:41:39,905 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:39,905 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003681001] [2022-02-15 13:41:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:39,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:40,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:40,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:40,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003681001] [2022-02-15 13:41:40,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003681001] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:40,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:40,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:40,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297993119] [2022-02-15 13:41:40,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:40,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:40,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:40,178 INFO L87 Difference]: Start difference. First operand 5382 states and 18892 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:41,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:41,708 INFO L93 Difference]: Finished difference Result 6307 states and 21983 transitions. [2022-02-15 13:41:41,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:41:41,709 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:41,722 INFO L225 Difference]: With dead ends: 6307 [2022-02-15 13:41:41,723 INFO L226 Difference]: Without dead ends: 6162 [2022-02-15 13:41:41,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:41:41,723 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 430 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 3026 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:41,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [430 Valid, 1494 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3026 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:41:41,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2022-02-15 13:41:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 5358. [2022-02-15 13:41:41,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5358 states, 5357 states have (on average 3.514280380810155) internal successors, (18826), 5357 states have internal predecessors, (18826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:41,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18826 transitions. [2022-02-15 13:41:41,815 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18826 transitions. Word has length 47 [2022-02-15 13:41:41,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:41,815 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 18826 transitions. [2022-02-15 13:41:41,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:41,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18826 transitions. [2022-02-15 13:41:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:41,824 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:41,825 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:41,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-15 13:41:41,825 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:41,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:41,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1669556517, now seen corresponding path program 21 times [2022-02-15 13:41:41,825 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:41,825 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995499653] [2022-02-15 13:41:41,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:41,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:42,093 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:42,093 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995499653] [2022-02-15 13:41:42,093 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995499653] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:42,093 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:42,093 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:42,093 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042060031] [2022-02-15 13:41:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:42,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:42,094 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:42,094 INFO L87 Difference]: Start difference. First operand 5358 states and 18826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:44,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:44,646 INFO L93 Difference]: Finished difference Result 9468 states and 33376 transitions. [2022-02-15 13:41:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 13:41:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:44,669 INFO L225 Difference]: With dead ends: 9468 [2022-02-15 13:41:44,669 INFO L226 Difference]: Without dead ends: 9331 [2022-02-15 13:41:44,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=402, Invalid=3504, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:41:44,671 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 720 mSDsluCounter, 3493 mSDsCounter, 0 mSdLazyCounter, 4603 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 4697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 4603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:44,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 2270 Invalid, 4697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 4603 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:41:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2022-02-15 13:41:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 5392. [2022-02-15 13:41:44,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5086254869226488) internal successors, (18915), 5391 states have internal predecessors, (18915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18915 transitions. [2022-02-15 13:41:44,869 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18915 transitions. Word has length 47 [2022-02-15 13:41:44,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:44,869 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18915 transitions. [2022-02-15 13:41:44,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:44,869 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18915 transitions. [2022-02-15 13:41:44,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:44,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:44,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:44,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-02-15 13:41:44,880 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1774758871, now seen corresponding path program 22 times [2022-02-15 13:41:44,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:44,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358711503] [2022-02-15 13:41:44,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:44,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:45,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:45,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:45,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358711503] [2022-02-15 13:41:45,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358711503] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:45,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:45,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:45,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011295731] [2022-02-15 13:41:45,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:45,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:45,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:45,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:45,236 INFO L87 Difference]: Start difference. First operand 5392 states and 18915 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:47,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:47,349 INFO L93 Difference]: Finished difference Result 10103 states and 35934 transitions. [2022-02-15 13:41:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:41:47,349 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:47,372 INFO L225 Difference]: With dead ends: 10103 [2022-02-15 13:41:47,373 INFO L226 Difference]: Without dead ends: 9996 [2022-02-15 13:41:47,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=433, Invalid=4259, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:41:47,374 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 745 mSDsluCounter, 3871 mSDsCounter, 0 mSdLazyCounter, 5008 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 2596 SdHoareTripleChecker+Invalid, 5097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 5008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:47,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 2596 Invalid, 5097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 5008 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:41:47,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2022-02-15 13:41:47,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 5376. [2022-02-15 13:41:47,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5375 states have (on average 3.5108837209302326) internal successors, (18871), 5375 states have internal predecessors, (18871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18871 transitions. [2022-02-15 13:41:47,496 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18871 transitions. Word has length 47 [2022-02-15 13:41:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:47,496 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 18871 transitions. [2022-02-15 13:41:47,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18871 transitions. [2022-02-15 13:41:47,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:47,505 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:47,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:47,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-02-15 13:41:47,505 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash -839606979, now seen corresponding path program 23 times [2022-02-15 13:41:47,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:47,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085378508] [2022-02-15 13:41:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:47,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:47,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:47,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085378508] [2022-02-15 13:41:47,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085378508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:47,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:47,788 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:47,788 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643930575] [2022-02-15 13:41:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:47,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:47,790 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:47,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:47,790 INFO L87 Difference]: Start difference. First operand 5376 states and 18871 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:49,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:49,249 INFO L93 Difference]: Finished difference Result 6505 states and 22569 transitions. [2022-02-15 13:41:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:41:49,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:49,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:49,265 INFO L225 Difference]: With dead ends: 6505 [2022-02-15 13:41:49,265 INFO L226 Difference]: Without dead ends: 6384 [2022-02-15 13:41:49,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:41:49,266 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 478 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 3005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:49,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1448 Invalid, 3005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:41:49,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2022-02-15 13:41:49,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5382. [2022-02-15 13:41:49,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5093848727002417) internal successors, (18884), 5381 states have internal predecessors, (18884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:49,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18884 transitions. [2022-02-15 13:41:49,367 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18884 transitions. Word has length 47 [2022-02-15 13:41:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:49,368 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18884 transitions. [2022-02-15 13:41:49,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18884 transitions. [2022-02-15 13:41:49,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:49,398 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:49,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:49,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-02-15 13:41:49,398 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:49,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:49,398 INFO L85 PathProgramCache]: Analyzing trace with hash 731814457, now seen corresponding path program 24 times [2022-02-15 13:41:49,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:49,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489995143] [2022-02-15 13:41:49,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:49,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:49,658 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:49,658 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489995143] [2022-02-15 13:41:49,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489995143] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:49,658 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:49,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:49,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684114339] [2022-02-15 13:41:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:49,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:49,658 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:49,659 INFO L87 Difference]: Start difference. First operand 5382 states and 18884 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:51,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:51,626 INFO L93 Difference]: Finished difference Result 6877 states and 23923 transitions. [2022-02-15 13:41:51,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:41:51,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:51,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:51,642 INFO L225 Difference]: With dead ends: 6877 [2022-02-15 13:41:51,642 INFO L226 Difference]: Without dead ends: 6633 [2022-02-15 13:41:51,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:41:51,643 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 462 mSDsluCounter, 3070 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 3668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:51,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1730 Invalid, 3668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3619 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:41:51,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2022-02-15 13:41:51,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5378. [2022-02-15 13:41:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.510135763436861) internal successors, (18874), 5377 states have internal predecessors, (18874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:51,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18874 transitions. [2022-02-15 13:41:51,734 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18874 transitions. Word has length 47 [2022-02-15 13:41:51,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:51,734 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 18874 transitions. [2022-02-15 13:41:51,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:51,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18874 transitions. [2022-02-15 13:41:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:51,743 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:51,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:51,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-02-15 13:41:51,743 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1030706135, now seen corresponding path program 25 times [2022-02-15 13:41:51,743 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:51,743 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148063395] [2022-02-15 13:41:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:51,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:52,004 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:52,004 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148063395] [2022-02-15 13:41:52,004 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148063395] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:52,004 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:52,004 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:41:52,004 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996791945] [2022-02-15 13:41:52,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:52,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:41:52,005 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:41:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:41:52,005 INFO L87 Difference]: Start difference. First operand 5378 states and 18874 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:52,934 INFO L93 Difference]: Finished difference Result 6370 states and 22134 transitions. [2022-02-15 13:41:52,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:41:52,934 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:52,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:52,950 INFO L225 Difference]: With dead ends: 6370 [2022-02-15 13:41:52,950 INFO L226 Difference]: Without dead ends: 6273 [2022-02-15 13:41:52,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:41:52,951 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 359 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 2681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:52,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1321 Invalid, 2681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:41:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2022-02-15 13:41:53,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 5392. [2022-02-15 13:41:53,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.506028566128733) internal successors, (18901), 5391 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18901 transitions. [2022-02-15 13:41:53,045 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18901 transitions. Word has length 47 [2022-02-15 13:41:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:53,046 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18901 transitions. [2022-02-15 13:41:53,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18901 transitions. [2022-02-15 13:41:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:53,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:53,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:53,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-02-15 13:41:53,055 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash -694714375, now seen corresponding path program 26 times [2022-02-15 13:41:53,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:53,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377289994] [2022-02-15 13:41:53,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:53,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:53,276 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:53,276 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377289994] [2022-02-15 13:41:53,276 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377289994] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:53,276 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:53,276 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:53,276 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214108237] [2022-02-15 13:41:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:53,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:53,277 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:53,277 INFO L87 Difference]: Start difference. First operand 5392 states and 18901 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:54,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:54,269 INFO L93 Difference]: Finished difference Result 6271 states and 21829 transitions. [2022-02-15 13:41:54,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:41:54,269 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:54,284 INFO L225 Difference]: With dead ends: 6271 [2022-02-15 13:41:54,284 INFO L226 Difference]: Without dead ends: 6154 [2022-02-15 13:41:54,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:41:54,285 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 356 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:54,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1381 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:41:54,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-02-15 13:41:54,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 5366. [2022-02-15 13:41:54,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5366 states, 5365 states have (on average 3.5109040074557316) internal successors, (18836), 5365 states have internal predecessors, (18836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:54,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18836 transitions. [2022-02-15 13:41:54,407 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18836 transitions. Word has length 47 [2022-02-15 13:41:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:54,407 INFO L470 AbstractCegarLoop]: Abstraction has 5366 states and 18836 transitions. [2022-02-15 13:41:54,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:54,407 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18836 transitions. [2022-02-15 13:41:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:54,416 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:54,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:54,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-02-15 13:41:54,417 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:54,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1165544903, now seen corresponding path program 27 times [2022-02-15 13:41:54,417 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:54,417 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454420352] [2022-02-15 13:41:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:54,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:54,714 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:54,714 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454420352] [2022-02-15 13:41:54,714 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454420352] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:54,714 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:54,714 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:54,714 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852154588] [2022-02-15 13:41:54,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:54,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:54,715 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:54,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:54,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:54,715 INFO L87 Difference]: Start difference. First operand 5366 states and 18836 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:55,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:55,994 INFO L93 Difference]: Finished difference Result 6663 states and 23172 transitions. [2022-02-15 13:41:55,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:41:55,995 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:55,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:56,009 INFO L225 Difference]: With dead ends: 6663 [2022-02-15 13:41:56,009 INFO L226 Difference]: Without dead ends: 6536 [2022-02-15 13:41:56,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:41:56,010 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 475 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 2866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:56,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1370 Invalid, 2866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:41:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2022-02-15 13:41:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 5386. [2022-02-15 13:41:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5086350974930363) internal successors, (18894), 5385 states have internal predecessors, (18894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18894 transitions. [2022-02-15 13:41:56,104 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18894 transitions. Word has length 47 [2022-02-15 13:41:56,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:56,104 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18894 transitions. [2022-02-15 13:41:56,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:56,104 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18894 transitions. [2022-02-15 13:41:56,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:56,113 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:56,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:56,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-02-15 13:41:56,113 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:56,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:56,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1778673789, now seen corresponding path program 28 times [2022-02-15 13:41:56,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:56,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398638677] [2022-02-15 13:41:56,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:56,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:56,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:56,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:56,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398638677] [2022-02-15 13:41:56,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398638677] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:56,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:56,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:56,383 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993143733] [2022-02-15 13:41:56,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:56,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:56,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:56,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:56,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:56,383 INFO L87 Difference]: Start difference. First operand 5386 states and 18894 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:41:58,511 INFO L93 Difference]: Finished difference Result 8560 states and 30207 transitions. [2022-02-15 13:41:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:41:58,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:41:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:41:58,532 INFO L225 Difference]: With dead ends: 8560 [2022-02-15 13:41:58,532 INFO L226 Difference]: Without dead ends: 8471 [2022-02-15 13:41:58,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=281, Invalid=2475, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 13:41:58,533 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 659 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 3715 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 3791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:41:58,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 1862 Invalid, 3791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3715 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:41:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8471 states. [2022-02-15 13:41:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8471 to 5410. [2022-02-15 13:41:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5410 states, 5409 states have (on average 3.5067480125716397) internal successors, (18968), 5409 states have internal predecessors, (18968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:58,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 18968 transitions. [2022-02-15 13:41:58,644 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 18968 transitions. Word has length 47 [2022-02-15 13:41:58,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:41:58,644 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 18968 transitions. [2022-02-15 13:41:58,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:41:58,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 18968 transitions. [2022-02-15 13:41:58,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:41:58,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:41:58,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:41:58,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-02-15 13:41:58,654 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:41:58,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:41:58,654 INFO L85 PathProgramCache]: Analyzing trace with hash 928021881, now seen corresponding path program 29 times [2022-02-15 13:41:58,654 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:41:58,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728672127] [2022-02-15 13:41:58,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:41:58,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:41:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:41:58,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:41:58,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:41:58,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728672127] [2022-02-15 13:41:58,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728672127] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:41:58,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:41:58,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:41:58,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574414323] [2022-02-15 13:41:58,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:41:58,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:41:58,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:41:58,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:41:58,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:41:58,924 INFO L87 Difference]: Start difference. First operand 5410 states and 18968 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:00,885 INFO L93 Difference]: Finished difference Result 9269 states and 32989 transitions. [2022-02-15 13:42:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 13:42:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:00,928 INFO L225 Difference]: With dead ends: 9269 [2022-02-15 13:42:00,928 INFO L226 Difference]: Without dead ends: 9166 [2022-02-15 13:42:00,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=357, Invalid=3549, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:42:00,933 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 700 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 4247 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 4323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:00,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 2156 Invalid, 4323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:42:00,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9166 states. [2022-02-15 13:42:01,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9166 to 5390. [2022-02-15 13:42:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5101131935424013) internal successors, (18916), 5389 states have internal predecessors, (18916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18916 transitions. [2022-02-15 13:42:01,069 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18916 transitions. Word has length 47 [2022-02-15 13:42:01,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:01,069 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18916 transitions. [2022-02-15 13:42:01,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18916 transitions. [2022-02-15 13:42:01,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:01,077 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:01,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:01,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-02-15 13:42:01,078 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:01,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:01,078 INFO L85 PathProgramCache]: Analyzing trace with hash 376378455, now seen corresponding path program 30 times [2022-02-15 13:42:01,078 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:01,078 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812296437] [2022-02-15 13:42:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:01,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:01,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:01,331 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:01,331 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812296437] [2022-02-15 13:42:01,331 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812296437] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:01,331 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:01,331 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:01,331 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815469043] [2022-02-15 13:42:01,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:01,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:01,332 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:01,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:01,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:01,332 INFO L87 Difference]: Start difference. First operand 5390 states and 18916 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:02,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:02,779 INFO L93 Difference]: Finished difference Result 6541 states and 22685 transitions. [2022-02-15 13:42:02,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:42:02,779 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:02,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:02,798 INFO L225 Difference]: With dead ends: 6541 [2022-02-15 13:42:02,798 INFO L226 Difference]: Without dead ends: 6414 [2022-02-15 13:42:02,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:42:02,799 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 436 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 3039 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:02,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1433 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3039 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2022-02-15 13:42:02,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 5402. [2022-02-15 13:42:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.507868913164229) internal successors, (18946), 5401 states have internal predecessors, (18946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:02,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18946 transitions. [2022-02-15 13:42:02,891 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18946 transitions. Word has length 47 [2022-02-15 13:42:02,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:02,891 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 18946 transitions. [2022-02-15 13:42:02,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:02,891 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18946 transitions. [2022-02-15 13:42:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:02,901 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:02,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:02,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-02-15 13:42:02,901 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2091217581, now seen corresponding path program 31 times [2022-02-15 13:42:02,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:02,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511072203] [2022-02-15 13:42:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:02,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:03,170 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:03,170 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511072203] [2022-02-15 13:42:03,170 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511072203] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:03,170 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:03,170 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:03,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118895896] [2022-02-15 13:42:03,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:03,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:03,171 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:03,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:03,171 INFO L87 Difference]: Start difference. First operand 5402 states and 18946 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:04,676 INFO L93 Difference]: Finished difference Result 6630 states and 22927 transitions. [2022-02-15 13:42:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:42:04,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:04,714 INFO L225 Difference]: With dead ends: 6630 [2022-02-15 13:42:04,714 INFO L226 Difference]: Without dead ends: 6533 [2022-02-15 13:42:04,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:42:04,715 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 499 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 3049 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 3081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:04,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1500 Invalid, 3081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3049 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2022-02-15 13:42:04,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 5408. [2022-02-15 13:42:04,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5407 states have (on average 3.506750508599963) internal successors, (18961), 5407 states have internal predecessors, (18961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:04,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18961 transitions. [2022-02-15 13:42:04,811 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18961 transitions. Word has length 47 [2022-02-15 13:42:04,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:04,812 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 18961 transitions. [2022-02-15 13:42:04,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18961 transitions. [2022-02-15 13:42:04,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:04,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:04,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:04,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-02-15 13:42:04,821 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:04,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2088543755, now seen corresponding path program 32 times [2022-02-15 13:42:04,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:04,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632550053] [2022-02-15 13:42:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:04,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:05,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:05,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632550053] [2022-02-15 13:42:05,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632550053] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:05,056 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:05,056 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:05,056 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815543792] [2022-02-15 13:42:05,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:05,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:05,057 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:05,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:05,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:05,057 INFO L87 Difference]: Start difference. First operand 5408 states and 18961 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:06,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:06,021 INFO L93 Difference]: Finished difference Result 6511 states and 22582 transitions. [2022-02-15 13:42:06,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:42:06,022 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:06,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:06,049 INFO L225 Difference]: With dead ends: 6511 [2022-02-15 13:42:06,050 INFO L226 Difference]: Without dead ends: 6402 [2022-02-15 13:42:06,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:06,051 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 443 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2836 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 2864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:06,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 1325 Invalid, 2864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2836 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:42:06,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2022-02-15 13:42:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 5390. [2022-02-15 13:42:06,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5093709408053444) internal successors, (18912), 5389 states have internal predecessors, (18912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18912 transitions. [2022-02-15 13:42:06,136 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18912 transitions. Word has length 47 [2022-02-15 13:42:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:06,137 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18912 transitions. [2022-02-15 13:42:06,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18912 transitions. [2022-02-15 13:42:06,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:06,145 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:06,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:06,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-02-15 13:42:06,145 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:06,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 897951869, now seen corresponding path program 33 times [2022-02-15 13:42:06,146 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:06,146 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430762941] [2022-02-15 13:42:06,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:06,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:06,405 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:06,405 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430762941] [2022-02-15 13:42:06,405 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430762941] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:06,405 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:06,405 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:06,405 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490327498] [2022-02-15 13:42:06,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:06,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:06,405 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:06,406 INFO L87 Difference]: Start difference. First operand 5390 states and 18912 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:08,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:08,098 INFO L93 Difference]: Finished difference Result 6620 states and 22930 transitions. [2022-02-15 13:42:08,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:42:08,098 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:08,113 INFO L225 Difference]: With dead ends: 6620 [2022-02-15 13:42:08,113 INFO L226 Difference]: Without dead ends: 6499 [2022-02-15 13:42:08,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:42:08,114 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 501 mSDsluCounter, 2835 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1519 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:08,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1519 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:42:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2022-02-15 13:42:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 5396. [2022-02-15 13:42:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5396 states, 5395 states have (on average 3.5078776645041705) internal successors, (18925), 5395 states have internal predecessors, (18925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:08,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 18925 transitions. [2022-02-15 13:42:08,203 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 18925 transitions. Word has length 47 [2022-02-15 13:42:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:08,203 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 18925 transitions. [2022-02-15 13:42:08,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 18925 transitions. [2022-02-15 13:42:08,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:08,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:08,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:08,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-02-15 13:42:08,212 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:08,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1825593991, now seen corresponding path program 34 times [2022-02-15 13:42:08,213 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:08,213 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763341435] [2022-02-15 13:42:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:08,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:08,474 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:08,474 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763341435] [2022-02-15 13:42:08,474 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763341435] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:08,474 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:08,474 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:08,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148603793] [2022-02-15 13:42:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:08,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:08,475 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:08,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:08,475 INFO L87 Difference]: Start difference. First operand 5396 states and 18925 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:10,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:10,511 INFO L93 Difference]: Finished difference Result 7773 states and 27053 transitions. [2022-02-15 13:42:10,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 13:42:10,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:10,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:10,528 INFO L225 Difference]: With dead ends: 7773 [2022-02-15 13:42:10,528 INFO L226 Difference]: Without dead ends: 7678 [2022-02-15 13:42:10,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:42:10,529 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 585 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 3763 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 3812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:10,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 1812 Invalid, 3812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3763 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:42:10,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2022-02-15 13:42:10,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5386. [2022-02-15 13:42:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5093779015784587) internal successors, (18898), 5385 states have internal predecessors, (18898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18898 transitions. [2022-02-15 13:42:10,623 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18898 transitions. Word has length 47 [2022-02-15 13:42:10,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:10,623 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18898 transitions. [2022-02-15 13:42:10,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18898 transitions. [2022-02-15 13:42:10,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:10,632 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:10,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:10,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-02-15 13:42:10,632 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:10,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1526702313, now seen corresponding path program 35 times [2022-02-15 13:42:10,633 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:10,633 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575263120] [2022-02-15 13:42:10,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:10,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:10,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:10,911 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:10,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575263120] [2022-02-15 13:42:10,911 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575263120] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:10,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:10,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:10,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783308042] [2022-02-15 13:42:10,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:10,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:10,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:10,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:10,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:10,912 INFO L87 Difference]: Start difference. First operand 5386 states and 18898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:12,444 INFO L93 Difference]: Finished difference Result 6616 states and 22882 transitions. [2022-02-15 13:42:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:42:12,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:12,458 INFO L225 Difference]: With dead ends: 6616 [2022-02-15 13:42:12,458 INFO L226 Difference]: Without dead ends: 6519 [2022-02-15 13:42:12,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:42:12,459 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 499 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 2988 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 3028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:12,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1463 Invalid, 3028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2988 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2022-02-15 13:42:12,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 5394. [2022-02-15 13:42:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.5075097348414612) internal successors, (18916), 5393 states have internal predecessors, (18916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18916 transitions. [2022-02-15 13:42:12,545 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18916 transitions. Word has length 47 [2022-02-15 13:42:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:12,545 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 18916 transitions. [2022-02-15 13:42:12,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:12,545 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18916 transitions. [2022-02-15 13:42:12,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:12,553 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:12,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:12,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-02-15 13:42:12,554 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:12,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:12,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1042844473, now seen corresponding path program 36 times [2022-02-15 13:42:12,554 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:12,554 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285018486] [2022-02-15 13:42:12,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:12,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:12,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:12,744 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:12,744 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285018486] [2022-02-15 13:42:12,744 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285018486] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:12,744 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:12,744 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:12,744 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034101240] [2022-02-15 13:42:12,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:12,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:12,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:12,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:12,745 INFO L87 Difference]: Start difference. First operand 5394 states and 18916 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:13,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:13,755 INFO L93 Difference]: Finished difference Result 6497 states and 22537 transitions. [2022-02-15 13:42:13,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:42:13,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:13,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:13,805 INFO L225 Difference]: With dead ends: 6497 [2022-02-15 13:42:13,805 INFO L226 Difference]: Without dead ends: 6394 [2022-02-15 13:42:13,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:42:13,806 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 424 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 2974 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 3008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:13,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1381 Invalid, 3008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2974 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:42:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2022-02-15 13:42:13,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 5382. [2022-02-15 13:42:13,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.510128228953726) internal successors, (18888), 5381 states have internal predecessors, (18888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:13,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18888 transitions. [2022-02-15 13:42:13,937 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18888 transitions. Word has length 47 [2022-02-15 13:42:13,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:13,937 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18888 transitions. [2022-02-15 13:42:13,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18888 transitions. [2022-02-15 13:42:13,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:13,945 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:13,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-02-15 13:42:13,946 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:13,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:13,946 INFO L85 PathProgramCache]: Analyzing trace with hash -539224437, now seen corresponding path program 37 times [2022-02-15 13:42:13,946 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:13,946 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789072751] [2022-02-15 13:42:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:13,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:14,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:14,155 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:14,155 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789072751] [2022-02-15 13:42:14,155 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789072751] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:14,155 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:14,155 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:14,155 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533859387] [2022-02-15 13:42:14,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:14,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:14,155 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:14,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:14,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:14,156 INFO L87 Difference]: Start difference. First operand 5382 states and 18888 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:15,043 INFO L93 Difference]: Finished difference Result 6332 states and 22041 transitions. [2022-02-15 13:42:15,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:42:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:15,056 INFO L225 Difference]: With dead ends: 6332 [2022-02-15 13:42:15,057 INFO L226 Difference]: Without dead ends: 6205 [2022-02-15 13:42:15,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:42:15,057 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 378 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 2803 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:15,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1315 Invalid, 2824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2803 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:42:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2022-02-15 13:42:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 5418. [2022-02-15 13:42:15,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.5078456710356285) internal successors, (19002), 5417 states have internal predecessors, (19002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19002 transitions. [2022-02-15 13:42:15,141 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19002 transitions. Word has length 47 [2022-02-15 13:42:15,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:15,141 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 19002 transitions. [2022-02-15 13:42:15,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:15,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19002 transitions. [2022-02-15 13:42:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:15,150 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:15,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:15,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-02-15 13:42:15,150 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:15,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:15,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1288146823, now seen corresponding path program 38 times [2022-02-15 13:42:15,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:15,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815386641] [2022-02-15 13:42:15,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:15,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:15,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:15,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815386641] [2022-02-15 13:42:15,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815386641] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:15,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:15,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:15,336 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503760524] [2022-02-15 13:42:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:15,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:15,337 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:15,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:15,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:15,337 INFO L87 Difference]: Start difference. First operand 5418 states and 19002 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:16,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:16,323 INFO L93 Difference]: Finished difference Result 6451 states and 22378 transitions. [2022-02-15 13:42:16,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:42:16,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:16,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:16,338 INFO L225 Difference]: With dead ends: 6451 [2022-02-15 13:42:16,338 INFO L226 Difference]: Without dead ends: 6354 [2022-02-15 13:42:16,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:16,339 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 438 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 3031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:16,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1468 Invalid, 3031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:42:16,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2022-02-15 13:42:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 5424. [2022-02-15 13:42:16,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 3.5067305919232896) internal successors, (19017), 5423 states have internal predecessors, (19017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:16,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19017 transitions. [2022-02-15 13:42:16,430 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19017 transitions. Word has length 47 [2022-02-15 13:42:16,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:16,431 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 19017 transitions. [2022-02-15 13:42:16,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19017 transitions. [2022-02-15 13:42:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:16,440 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:16,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:16,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-02-15 13:42:16,440 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:16,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1290820649, now seen corresponding path program 39 times [2022-02-15 13:42:16,440 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:16,440 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105003026] [2022-02-15 13:42:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:16,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:16,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:16,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:16,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105003026] [2022-02-15 13:42:16,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105003026] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:16,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:16,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:16,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888855996] [2022-02-15 13:42:16,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:16,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:16,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:16,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:16,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:16,726 INFO L87 Difference]: Start difference. First operand 5424 states and 19017 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:18,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:18,099 INFO L93 Difference]: Finished difference Result 6302 states and 21938 transitions. [2022-02-15 13:42:18,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:42:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:18,113 INFO L225 Difference]: With dead ends: 6302 [2022-02-15 13:42:18,113 INFO L226 Difference]: Without dead ends: 6193 [2022-02-15 13:42:18,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:42:18,114 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 383 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 2828 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 2852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:18,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1316 Invalid, 2852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2828 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:18,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2022-02-15 13:42:18,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5406. [2022-02-15 13:42:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5405 states have (on average 3.50786308973173) internal successors, (18960), 5405 states have internal predecessors, (18960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:18,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 18960 transitions. [2022-02-15 13:42:18,230 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 18960 transitions. Word has length 47 [2022-02-15 13:42:18,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:18,230 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 18960 transitions. [2022-02-15 13:42:18,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 18960 transitions. [2022-02-15 13:42:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:18,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:18,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:18,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-02-15 13:42:18,239 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:18,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1390506559, now seen corresponding path program 40 times [2022-02-15 13:42:18,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:18,240 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893708612] [2022-02-15 13:42:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:18,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:18,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:18,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893708612] [2022-02-15 13:42:18,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893708612] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:18,488 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:18,488 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:42:18,488 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623064355] [2022-02-15 13:42:18,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:18,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:42:18,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:42:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:42:18,488 INFO L87 Difference]: Start difference. First operand 5406 states and 18960 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:19,809 INFO L93 Difference]: Finished difference Result 6337 states and 22094 transitions. [2022-02-15 13:42:19,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:42:19,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:19,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:19,823 INFO L225 Difference]: With dead ends: 6337 [2022-02-15 13:42:19,824 INFO L226 Difference]: Without dead ends: 6192 [2022-02-15 13:42:19,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:42:19,824 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 357 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 2662 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:19,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1288 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2662 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2022-02-15 13:42:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5418. [2022-02-15 13:42:19,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5418 states, 5417 states have (on average 3.505630422743216) internal successors, (18990), 5417 states have internal predecessors, (18990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 18990 transitions. [2022-02-15 13:42:19,910 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 18990 transitions. Word has length 47 [2022-02-15 13:42:19,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:19,910 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 18990 transitions. [2022-02-15 13:42:19,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:19,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 18990 transitions. [2022-02-15 13:42:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:19,919 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:19,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:19,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-02-15 13:42:19,920 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:19,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:19,920 INFO L85 PathProgramCache]: Analyzing trace with hash 2108036509, now seen corresponding path program 41 times [2022-02-15 13:42:19,920 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:19,920 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141393679] [2022-02-15 13:42:19,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:19,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:19,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:20,178 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:20,178 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141393679] [2022-02-15 13:42:20,178 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141393679] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:20,178 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:20,178 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:20,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909143651] [2022-02-15 13:42:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:20,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:20,179 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:20,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:20,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:20,179 INFO L87 Difference]: Start difference. First operand 5418 states and 18990 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:21,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:21,663 INFO L93 Difference]: Finished difference Result 6358 states and 22098 transitions. [2022-02-15 13:42:21,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:42:21,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:21,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:21,677 INFO L225 Difference]: With dead ends: 6358 [2022-02-15 13:42:21,677 INFO L226 Difference]: Without dead ends: 6261 [2022-02-15 13:42:21,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:21,678 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 398 mSDsluCounter, 2716 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:21,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1493 Invalid, 3070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3041 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2022-02-15 13:42:21,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5424. [2022-02-15 13:42:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5423 states have (on average 3.5045177945786463) internal successors, (19005), 5423 states have internal predecessors, (19005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19005 transitions. [2022-02-15 13:42:21,766 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19005 transitions. Word has length 47 [2022-02-15 13:42:21,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:21,766 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 19005 transitions. [2022-02-15 13:42:21,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19005 transitions. [2022-02-15 13:42:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:21,774 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:21,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:21,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-02-15 13:42:21,774 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:21,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2110710335, now seen corresponding path program 42 times [2022-02-15 13:42:21,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:21,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338996019] [2022-02-15 13:42:21,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:21,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:22,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:22,034 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:22,034 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338996019] [2022-02-15 13:42:22,034 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338996019] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:22,034 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:22,034 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:22,034 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598727804] [2022-02-15 13:42:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:22,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:22,035 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:22,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:22,035 INFO L87 Difference]: Start difference. First operand 5424 states and 19005 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:23,359 INFO L93 Difference]: Finished difference Result 6179 states and 21553 transitions. [2022-02-15 13:42:23,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:42:23,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:23,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:23,373 INFO L225 Difference]: With dead ends: 6179 [2022-02-15 13:42:23,374 INFO L226 Difference]: Without dead ends: 6046 [2022-02-15 13:42:23,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:42:23,374 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 340 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:23,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1198 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2022-02-15 13:42:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 5382. [2022-02-15 13:42:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 5381 states have (on average 3.5086415164467573) internal successors, (18880), 5381 states have internal predecessors, (18880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:23,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18880 transitions. [2022-02-15 13:42:23,457 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18880 transitions. Word has length 47 [2022-02-15 13:42:23,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:23,457 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18880 transitions. [2022-02-15 13:42:23,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:23,457 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18880 transitions. [2022-02-15 13:42:23,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:23,466 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:23,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:23,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-02-15 13:42:23,466 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1938513479, now seen corresponding path program 43 times [2022-02-15 13:42:23,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:23,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262282603] [2022-02-15 13:42:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:23,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:23,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:23,724 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:23,724 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262282603] [2022-02-15 13:42:23,724 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262282603] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:23,724 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:23,724 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:23,724 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404288125] [2022-02-15 13:42:23,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:23,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:23,724 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:23,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:23,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:23,725 INFO L87 Difference]: Start difference. First operand 5382 states and 18880 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:25,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:25,281 INFO L93 Difference]: Finished difference Result 6474 states and 22562 transitions. [2022-02-15 13:42:25,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:42:25,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:25,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:25,298 INFO L225 Difference]: With dead ends: 6474 [2022-02-15 13:42:25,298 INFO L226 Difference]: Without dead ends: 6289 [2022-02-15 13:42:25,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:42:25,299 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 483 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 3027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:25,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [483 Valid, 1464 Invalid, 3027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2022-02-15 13:42:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5386. [2022-02-15 13:42:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5386 states, 5385 states have (on average 3.5078922934076138) internal successors, (18890), 5385 states have internal predecessors, (18890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:25,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18890 transitions. [2022-02-15 13:42:25,390 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18890 transitions. Word has length 47 [2022-02-15 13:42:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:25,390 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18890 transitions. [2022-02-15 13:42:25,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:25,390 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18890 transitions. [2022-02-15 13:42:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:25,399 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:25,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:25,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-02-15 13:42:25,399 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:25,399 INFO L85 PathProgramCache]: Analyzing trace with hash -2056005221, now seen corresponding path program 44 times [2022-02-15 13:42:25,399 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:25,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73228751] [2022-02-15 13:42:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:25,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:25,591 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:25,591 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73228751] [2022-02-15 13:42:25,591 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73228751] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:25,591 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:25,591 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:25,591 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071140605] [2022-02-15 13:42:25,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:25,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:25,591 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:25,592 INFO L87 Difference]: Start difference. First operand 5386 states and 18890 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:26,852 INFO L93 Difference]: Finished difference Result 6566 states and 22765 transitions. [2022-02-15 13:42:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:42:26,853 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:26,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:26,869 INFO L225 Difference]: With dead ends: 6566 [2022-02-15 13:42:26,869 INFO L226 Difference]: Without dead ends: 6429 [2022-02-15 13:42:26,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:42:26,870 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 497 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 3017 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:26,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1436 Invalid, 3075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:42:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6429 states. [2022-02-15 13:42:26,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6429 to 5392. [2022-02-15 13:42:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5392 states, 5391 states have (on average 3.5063995548135782) internal successors, (18903), 5391 states have internal predecessors, (18903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18903 transitions. [2022-02-15 13:42:26,970 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18903 transitions. Word has length 47 [2022-02-15 13:42:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:26,970 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18903 transitions. [2022-02-15 13:42:26,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:26,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18903 transitions. [2022-02-15 13:42:26,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:26,979 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:26,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:26,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-02-15 13:42:26,980 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:26,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash -484583785, now seen corresponding path program 45 times [2022-02-15 13:42:26,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:26,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548159070] [2022-02-15 13:42:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:26,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:27,231 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:27,231 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548159070] [2022-02-15 13:42:27,231 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548159070] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:27,231 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:27,231 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:27,231 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389393064] [2022-02-15 13:42:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:27,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:27,232 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:27,232 INFO L87 Difference]: Start difference. First operand 5392 states and 18903 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:29,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:29,550 INFO L93 Difference]: Finished difference Result 8647 states and 30313 transitions. [2022-02-15 13:42:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 13:42:29,552 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:29,572 INFO L225 Difference]: With dead ends: 8647 [2022-02-15 13:42:29,573 INFO L226 Difference]: Without dead ends: 8552 [2022-02-15 13:42:29,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=334, Invalid=3572, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:42:29,576 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 627 mSDsluCounter, 3935 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 4860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:29,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [627 Valid, 2407 Invalid, 4860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4780 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:42:29,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2022-02-15 13:42:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 5390. [2022-02-15 13:42:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.5078864353312302) internal successors, (18904), 5389 states have internal predecessors, (18904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18904 transitions. [2022-02-15 13:42:29,688 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18904 transitions. Word has length 47 [2022-02-15 13:42:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:29,688 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18904 transitions. [2022-02-15 13:42:29,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18904 transitions. [2022-02-15 13:42:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:29,698 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:29,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:29,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-02-15 13:42:29,698 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash -185692107, now seen corresponding path program 46 times [2022-02-15 13:42:29,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:29,699 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31817777] [2022-02-15 13:42:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:29,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:29,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:29,962 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:29,962 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31817777] [2022-02-15 13:42:29,962 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31817777] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:29,962 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:29,962 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:29,962 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746760526] [2022-02-15 13:42:29,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:29,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:29,963 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:29,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:29,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:29,963 INFO L87 Difference]: Start difference. First operand 5390 states and 18904 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:31,546 INFO L93 Difference]: Finished difference Result 6515 states and 22598 transitions. [2022-02-15 13:42:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:42:31,546 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:31,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:31,561 INFO L225 Difference]: With dead ends: 6515 [2022-02-15 13:42:31,561 INFO L226 Difference]: Without dead ends: 6418 [2022-02-15 13:42:31,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:42:31,561 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 461 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 3037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:31,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1456 Invalid, 3037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:31,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2022-02-15 13:42:31,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 5398. [2022-02-15 13:42:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5397 states have (on average 3.5060218639985177) internal successors, (18922), 5397 states have internal predecessors, (18922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 18922 transitions. [2022-02-15 13:42:31,652 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 18922 transitions. Word has length 47 [2022-02-15 13:42:31,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:31,653 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 18922 transitions. [2022-02-15 13:42:31,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:31,653 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 18922 transitions. [2022-02-15 13:42:31,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:31,663 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:31,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:31,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-02-15 13:42:31,664 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:31,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:31,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1911112617, now seen corresponding path program 47 times [2022-02-15 13:42:31,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:31,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775298676] [2022-02-15 13:42:31,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:31,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:31,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:31,975 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:31,975 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775298676] [2022-02-15 13:42:31,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775298676] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:31,975 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:31,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:31,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480327088] [2022-02-15 13:42:31,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:31,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:31,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:31,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:31,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:31,976 INFO L87 Difference]: Start difference. First operand 5398 states and 18922 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:33,323 INFO L93 Difference]: Finished difference Result 6336 states and 22053 transitions. [2022-02-15 13:42:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:42:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:33,338 INFO L225 Difference]: With dead ends: 6336 [2022-02-15 13:42:33,338 INFO L226 Difference]: Without dead ends: 6237 [2022-02-15 13:42:33,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:33,339 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 394 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:33,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 1203 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:33,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2022-02-15 13:42:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5390. [2022-02-15 13:42:33,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 3.507515308962702) internal successors, (18902), 5389 states have internal predecessors, (18902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:33,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18902 transitions. [2022-02-15 13:42:33,471 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18902 transitions. Word has length 47 [2022-02-15 13:42:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:33,471 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18902 transitions. [2022-02-15 13:42:33,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18902 transitions. [2022-02-15 13:42:33,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:33,480 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:33,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:33,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-02-15 13:42:33,480 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash -835368053, now seen corresponding path program 48 times [2022-02-15 13:42:33,481 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:33,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445920432] [2022-02-15 13:42:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:33,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:33,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:33,734 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:33,734 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445920432] [2022-02-15 13:42:33,734 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445920432] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:33,734 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:33,734 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:42:33,734 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950351901] [2022-02-15 13:42:33,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:33,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:42:33,735 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:33,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:42:33,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:42:33,735 INFO L87 Difference]: Start difference. First operand 5390 states and 18902 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:35,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:35,073 INFO L93 Difference]: Finished difference Result 6321 states and 22036 transitions. [2022-02-15 13:42:35,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:42:35,073 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:35,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:35,087 INFO L225 Difference]: With dead ends: 6321 [2022-02-15 13:42:35,087 INFO L226 Difference]: Without dead ends: 6176 [2022-02-15 13:42:35,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:42:35,089 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 356 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 2699 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:35,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 1315 Invalid, 2728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2699 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:35,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2022-02-15 13:42:35,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 5402. [2022-02-15 13:42:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5402 states, 5401 states have (on average 3.505276800592483) internal successors, (18932), 5401 states have internal predecessors, (18932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18932 transitions. [2022-02-15 13:42:35,176 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18932 transitions. Word has length 47 [2022-02-15 13:42:35,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:35,176 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 18932 transitions. [2022-02-15 13:42:35,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18932 transitions. [2022-02-15 13:42:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:35,185 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:35,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:35,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-02-15 13:42:35,185 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:35,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:35,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1516146537, now seen corresponding path program 49 times [2022-02-15 13:42:35,185 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:35,186 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307622138] [2022-02-15 13:42:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:35,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:35,453 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:35,453 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307622138] [2022-02-15 13:42:35,453 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307622138] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:35,453 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:35,453 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:35,453 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381752716] [2022-02-15 13:42:35,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:35,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:35,453 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:35,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:35,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:35,454 INFO L87 Difference]: Start difference. First operand 5402 states and 18932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:36,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:36,907 INFO L93 Difference]: Finished difference Result 6342 states and 22040 transitions. [2022-02-15 13:42:36,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:42:36,907 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:36,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:36,921 INFO L225 Difference]: With dead ends: 6342 [2022-02-15 13:42:36,922 INFO L226 Difference]: Without dead ends: 6245 [2022-02-15 13:42:36,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:36,922 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 402 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:36,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 1444 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:36,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2022-02-15 13:42:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5408. [2022-02-15 13:42:36,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5408 states, 5407 states have (on average 3.5041612724246347) internal successors, (18947), 5407 states have internal predecessors, (18947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18947 transitions. [2022-02-15 13:42:37,011 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18947 transitions. Word has length 47 [2022-02-15 13:42:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:37,011 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 18947 transitions. [2022-02-15 13:42:37,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:37,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18947 transitions. [2022-02-15 13:42:37,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:37,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:37,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:37,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-02-15 13:42:37,020 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:37,020 INFO L85 PathProgramCache]: Analyzing trace with hash -209273973, now seen corresponding path program 50 times [2022-02-15 13:42:37,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:37,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579027345] [2022-02-15 13:42:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:37,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:37,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:37,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:37,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579027345] [2022-02-15 13:42:37,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579027345] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:37,281 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:37,281 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:37,281 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378194995] [2022-02-15 13:42:37,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:37,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:37,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:37,281 INFO L87 Difference]: Start difference. First operand 5408 states and 18947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:38,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:38,578 INFO L93 Difference]: Finished difference Result 6163 states and 21495 transitions. [2022-02-15 13:42:38,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:42:38,578 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:38,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:38,592 INFO L225 Difference]: With dead ends: 6163 [2022-02-15 13:42:38,592 INFO L226 Difference]: Without dead ends: 6042 [2022-02-15 13:42:38,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:42:38,593 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 327 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:38,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1217 Invalid, 2602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:42:38,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2022-02-15 13:42:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 5378. [2022-02-15 13:42:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 3.5093918541937885) internal successors, (18870), 5377 states have internal predecessors, (18870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18870 transitions. [2022-02-15 13:42:38,684 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18870 transitions. Word has length 47 [2022-02-15 13:42:38,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:38,684 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 18870 transitions. [2022-02-15 13:42:38,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:38,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18870 transitions. [2022-02-15 13:42:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:38,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:38,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:38,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-02-15 13:42:38,694 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:38,694 INFO L85 PathProgramCache]: Analyzing trace with hash -163058067, now seen corresponding path program 51 times [2022-02-15 13:42:38,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:38,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407265225] [2022-02-15 13:42:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:38,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:38,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:38,906 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:38,906 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407265225] [2022-02-15 13:42:38,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407265225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:38,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:38,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:42:38,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310734863] [2022-02-15 13:42:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:42:38,907 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:42:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:42:38,907 INFO L87 Difference]: Start difference. First operand 5378 states and 18870 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:39,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:39,938 INFO L93 Difference]: Finished difference Result 6353 states and 22148 transitions. [2022-02-15 13:42:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:42:39,939 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:39,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:39,954 INFO L225 Difference]: With dead ends: 6353 [2022-02-15 13:42:39,954 INFO L226 Difference]: Without dead ends: 6216 [2022-02-15 13:42:39,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:42:39,954 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 322 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:39,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1261 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:42:39,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2022-02-15 13:42:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 5458. [2022-02-15 13:42:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5457 states have (on average 3.507421660252886) internal successors, (19140), 5457 states have internal predecessors, (19140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:40,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19140 transitions. [2022-02-15 13:42:40,056 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19140 transitions. Word has length 47 [2022-02-15 13:42:40,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:40,057 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 19140 transitions. [2022-02-15 13:42:40,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:40,057 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19140 transitions. [2022-02-15 13:42:40,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:40,066 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:40,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:40,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-02-15 13:42:40,067 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:40,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -971998675, now seen corresponding path program 52 times [2022-02-15 13:42:40,067 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:40,067 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850242304] [2022-02-15 13:42:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:40,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:40,401 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:40,401 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850242304] [2022-02-15 13:42:40,401 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850242304] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:40,401 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:40,401 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:42:40,402 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496321216] [2022-02-15 13:42:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:40,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:42:40,402 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:40,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:42:40,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:42:40,403 INFO L87 Difference]: Start difference. First operand 5458 states and 19140 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:41,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:41,809 INFO L93 Difference]: Finished difference Result 6337 states and 22092 transitions. [2022-02-15 13:42:41,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:42:41,810 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:41,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:41,825 INFO L225 Difference]: With dead ends: 6337 [2022-02-15 13:42:41,825 INFO L226 Difference]: Without dead ends: 6192 [2022-02-15 13:42:41,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:42:41,826 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 375 mSDsluCounter, 2369 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 2726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:41,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 1356 Invalid, 2726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:41,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2022-02-15 13:42:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5458. [2022-02-15 13:42:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5457 states have (on average 3.503023639362287) internal successors, (19116), 5457 states have internal predecessors, (19116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19116 transitions. [2022-02-15 13:42:41,924 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19116 transitions. Word has length 47 [2022-02-15 13:42:41,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:41,924 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 19116 transitions. [2022-02-15 13:42:41,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:41,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19116 transitions. [2022-02-15 13:42:41,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:41,933 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:41,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:41,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-02-15 13:42:41,933 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1245654035, now seen corresponding path program 53 times [2022-02-15 13:42:41,934 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:41,934 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087396755] [2022-02-15 13:42:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:41,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:42,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:42,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087396755] [2022-02-15 13:42:42,188 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087396755] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:42,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:42,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:42:42,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258048453] [2022-02-15 13:42:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:42,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:42:42,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:42:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:42:42,189 INFO L87 Difference]: Start difference. First operand 5458 states and 19116 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:43,547 INFO L93 Difference]: Finished difference Result 6385 states and 22268 transitions. [2022-02-15 13:42:43,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:42:43,547 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:43,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:43,561 INFO L225 Difference]: With dead ends: 6385 [2022-02-15 13:42:43,561 INFO L226 Difference]: Without dead ends: 6136 [2022-02-15 13:42:43,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:42:43,561 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 373 mSDsluCounter, 2340 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:43,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [373 Valid, 1331 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:43,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2022-02-15 13:42:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5394. [2022-02-15 13:42:43,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5394 states, 5393 states have (on average 3.506026330428333) internal successors, (18908), 5393 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18908 transitions. [2022-02-15 13:42:43,644 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18908 transitions. Word has length 47 [2022-02-15 13:42:43,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:43,644 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 18908 transitions. [2022-02-15 13:42:43,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18908 transitions. [2022-02-15 13:42:43,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:43,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:43,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:43,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-02-15 13:42:43,653 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:43,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:43,653 INFO L85 PathProgramCache]: Analyzing trace with hash 489665227, now seen corresponding path program 54 times [2022-02-15 13:42:43,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:43,654 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578343631] [2022-02-15 13:42:43,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:43,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:43,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:43,898 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578343631] [2022-02-15 13:42:43,898 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578343631] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:43,898 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:43,898 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:42:43,898 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572050492] [2022-02-15 13:42:43,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:43,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:42:43,898 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:43,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:42:43,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:42:43,899 INFO L87 Difference]: Start difference. First operand 5394 states and 18908 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:45,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:45,185 INFO L93 Difference]: Finished difference Result 6273 states and 21852 transitions. [2022-02-15 13:42:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:42:45,185 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:45,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:45,199 INFO L225 Difference]: With dead ends: 6273 [2022-02-15 13:42:45,199 INFO L226 Difference]: Without dead ends: 6136 [2022-02-15 13:42:45,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:42:45,200 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 367 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 2653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:45,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1354 Invalid, 2653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:45,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2022-02-15 13:42:45,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5412. [2022-02-15 13:42:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 3.50267972648309) internal successors, (18953), 5411 states have internal predecessors, (18953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18953 transitions. [2022-02-15 13:42:45,290 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18953 transitions. Word has length 47 [2022-02-15 13:42:45,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:45,290 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 18953 transitions. [2022-02-15 13:42:45,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18953 transitions. [2022-02-15 13:42:45,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:45,298 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:45,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:45,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-02-15 13:42:45,299 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:45,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:45,299 INFO L85 PathProgramCache]: Analyzing trace with hash -319275381, now seen corresponding path program 55 times [2022-02-15 13:42:45,299 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:45,299 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749551210] [2022-02-15 13:42:45,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:45,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:45,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:45,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:45,556 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:45,556 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749551210] [2022-02-15 13:42:45,556 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749551210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:45,556 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:45,556 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:45,556 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626911438] [2022-02-15 13:42:45,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:45,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:45,556 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:45,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:45,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:45,557 INFO L87 Difference]: Start difference. First operand 5412 states and 18953 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:47,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:47,013 INFO L93 Difference]: Finished difference Result 6257 states and 21784 transitions. [2022-02-15 13:42:47,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:42:47,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:47,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:47,027 INFO L225 Difference]: With dead ends: 6257 [2022-02-15 13:42:47,027 INFO L226 Difference]: Without dead ends: 6112 [2022-02-15 13:42:47,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:42:47,028 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 424 mSDsluCounter, 2491 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 2929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:47,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1452 Invalid, 2929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:47,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2022-02-15 13:42:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 5412. [2022-02-15 13:42:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 3.50157087414526) internal successors, (18947), 5411 states have internal predecessors, (18947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:47,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18947 transitions. [2022-02-15 13:42:47,115 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18947 transitions. Word has length 47 [2022-02-15 13:42:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:47,115 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 18947 transitions. [2022-02-15 13:42:47,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18947 transitions. [2022-02-15 13:42:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:47,124 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:47,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:47,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-02-15 13:42:47,124 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:47,124 INFO L85 PathProgramCache]: Analyzing trace with hash 580620397, now seen corresponding path program 56 times [2022-02-15 13:42:47,124 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:47,124 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793639649] [2022-02-15 13:42:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:47,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:47,382 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:47,382 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793639649] [2022-02-15 13:42:47,382 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793639649] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:47,382 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:47,382 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:47,382 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752545317] [2022-02-15 13:42:47,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:47,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:47,383 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:47,383 INFO L87 Difference]: Start difference. First operand 5412 states and 18947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:50,142 INFO L93 Difference]: Finished difference Result 9782 states and 34633 transitions. [2022-02-15 13:42:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 13:42:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:50,165 INFO L225 Difference]: With dead ends: 9782 [2022-02-15 13:42:50,165 INFO L226 Difference]: Without dead ends: 9645 [2022-02-15 13:42:50,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=418, Invalid=3872, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 13:42:50,166 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 752 mSDsluCounter, 3362 mSDsCounter, 0 mSdLazyCounter, 4585 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2176 SdHoareTripleChecker+Invalid, 4691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:50,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 2176 Invalid, 4691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4585 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:42:50,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2022-02-15 13:42:50,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 5502. [2022-02-15 13:42:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5502 states, 5501 states have (on average 3.498636611525177) internal successors, (19246), 5501 states have internal predecessors, (19246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:50,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 19246 transitions. [2022-02-15 13:42:50,284 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 19246 transitions. Word has length 47 [2022-02-15 13:42:50,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:50,284 INFO L470 AbstractCegarLoop]: Abstraction has 5502 states and 19246 transitions. [2022-02-15 13:42:50,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:50,285 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 19246 transitions. [2022-02-15 13:42:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:50,293 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:50,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:50,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-02-15 13:42:50,294 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:50,294 INFO L85 PathProgramCache]: Analyzing trace with hash -270031511, now seen corresponding path program 57 times [2022-02-15 13:42:50,294 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:50,294 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454259608] [2022-02-15 13:42:50,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:50,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:50,566 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:50,566 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454259608] [2022-02-15 13:42:50,566 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454259608] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:50,566 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:50,566 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:50,566 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470710425] [2022-02-15 13:42:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:50,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:50,567 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:50,567 INFO L87 Difference]: Start difference. First operand 5502 states and 19246 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:52,632 INFO L93 Difference]: Finished difference Result 10309 states and 36819 transitions. [2022-02-15 13:42:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-02-15 13:42:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:52,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:52,658 INFO L225 Difference]: With dead ends: 10309 [2022-02-15 13:42:52,658 INFO L226 Difference]: Without dead ends: 10202 [2022-02-15 13:42:52,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=441, Invalid=4529, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 13:42:52,662 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 782 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 4958 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 5059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:52,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 2478 Invalid, 5059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4958 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:42:52,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2022-02-15 13:42:52,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 5480. [2022-02-15 13:42:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5480 states, 5479 states have (on average 3.5019164081036687) internal successors, (19187), 5479 states have internal predecessors, (19187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 19187 transitions. [2022-02-15 13:42:52,793 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 19187 transitions. Word has length 47 [2022-02-15 13:42:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:52,793 INFO L470 AbstractCegarLoop]: Abstraction has 5480 states and 19187 transitions. [2022-02-15 13:42:52,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:52,793 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 19187 transitions. [2022-02-15 13:42:52,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:52,802 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:52,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:52,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-02-15 13:42:52,803 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:52,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1410569935, now seen corresponding path program 58 times [2022-02-15 13:42:52,803 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:52,803 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196810374] [2022-02-15 13:42:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:52,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:53,098 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:53,098 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196810374] [2022-02-15 13:42:53,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196810374] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:53,098 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:53,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:53,099 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071275937] [2022-02-15 13:42:53,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:53,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:53,099 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:53,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:53,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:53,099 INFO L87 Difference]: Start difference. First operand 5480 states and 19187 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:54,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:54,705 INFO L93 Difference]: Finished difference Result 6505 states and 22565 transitions. [2022-02-15 13:42:54,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:42:54,705 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:54,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:54,720 INFO L225 Difference]: With dead ends: 6505 [2022-02-15 13:42:54,720 INFO L226 Difference]: Without dead ends: 6384 [2022-02-15 13:42:54,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:42:54,720 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 451 mSDsluCounter, 2589 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:54,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1462 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2987 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:42:54,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2022-02-15 13:42:54,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5486. [2022-02-15 13:42:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5485 states have (on average 3.5004557885141296) internal successors, (19200), 5485 states have internal predecessors, (19200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 19200 transitions. [2022-02-15 13:42:54,809 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 19200 transitions. Word has length 47 [2022-02-15 13:42:54,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:54,809 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 19200 transitions. [2022-02-15 13:42:54,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:54,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 19200 transitions. [2022-02-15 13:42:54,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:54,817 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:54,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:54,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-02-15 13:42:54,818 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:54,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:54,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1312975925, now seen corresponding path program 59 times [2022-02-15 13:42:54,818 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:54,818 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132349897] [2022-02-15 13:42:54,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:54,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:55,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:55,075 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:55,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132349897] [2022-02-15 13:42:55,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132349897] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:55,075 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:55,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:55,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889152863] [2022-02-15 13:42:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:55,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:55,076 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:55,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:55,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:55,076 INFO L87 Difference]: Start difference. First operand 5486 states and 19200 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:57,185 INFO L93 Difference]: Finished difference Result 7233 states and 25257 transitions. [2022-02-15 13:42:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 13:42:57,185 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:57,201 INFO L225 Difference]: With dead ends: 7233 [2022-02-15 13:42:57,201 INFO L226 Difference]: Without dead ends: 6989 [2022-02-15 13:42:57,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:42:57,202 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 505 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 3938 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 3991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 3938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:57,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [505 Valid, 1885 Invalid, 3991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 3938 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:42:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2022-02-15 13:42:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 5554. [2022-02-15 13:42:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 3.4979290473617866) internal successors, (19424), 5553 states have internal predecessors, (19424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19424 transitions. [2022-02-15 13:42:57,295 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19424 transitions. Word has length 47 [2022-02-15 13:42:57,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:57,296 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 19424 transitions. [2022-02-15 13:42:57,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:57,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19424 transitions. [2022-02-15 13:42:57,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:57,304 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:57,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:57,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-02-15 13:42:57,305 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:57,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:57,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1014084247, now seen corresponding path program 60 times [2022-02-15 13:42:57,305 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:57,305 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652519487] [2022-02-15 13:42:57,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:57,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:57,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:57,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:57,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652519487] [2022-02-15 13:42:57,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652519487] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:57,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:57,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:57,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423080882] [2022-02-15 13:42:57,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:57,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:57,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:57,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:57,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:57,562 INFO L87 Difference]: Start difference. First operand 5554 states and 19424 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:42:58,986 INFO L93 Difference]: Finished difference Result 6522 states and 22604 transitions. [2022-02-15 13:42:58,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:42:58,986 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:42:58,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:42:59,001 INFO L225 Difference]: With dead ends: 6522 [2022-02-15 13:42:59,002 INFO L226 Difference]: Without dead ends: 6425 [2022-02-15 13:42:59,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:42:59,002 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 379 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:42:59,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1463 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:42:59,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6425 states. [2022-02-15 13:42:59,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6425 to 5568. [2022-02-15 13:42:59,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5568 states, 5567 states have (on average 3.493982396263697) internal successors, (19451), 5567 states have internal predecessors, (19451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 19451 transitions. [2022-02-15 13:42:59,123 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 19451 transitions. Word has length 47 [2022-02-15 13:42:59,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:42:59,123 INFO L470 AbstractCegarLoop]: Abstraction has 5568 states and 19451 transitions. [2022-02-15 13:42:59,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:42:59,123 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 19451 transitions. [2022-02-15 13:42:59,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:42:59,132 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:42:59,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:42:59,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-02-15 13:42:59,133 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:42:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:42:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1555462539, now seen corresponding path program 61 times [2022-02-15 13:42:59,133 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:42:59,133 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815270729] [2022-02-15 13:42:59,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:42:59,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:42:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:42:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:42:59,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:42:59,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815270729] [2022-02-15 13:42:59,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815270729] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:42:59,394 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:42:59,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:42:59,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708415761] [2022-02-15 13:42:59,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:42:59,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:42:59,395 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:42:59,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:42:59,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:42:59,395 INFO L87 Difference]: Start difference. First operand 5568 states and 19451 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:00,776 INFO L93 Difference]: Finished difference Result 6343 states and 22059 transitions. [2022-02-15 13:43:00,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:43:00,776 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:00,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:00,791 INFO L225 Difference]: With dead ends: 6343 [2022-02-15 13:43:00,791 INFO L226 Difference]: Without dead ends: 6238 [2022-02-15 13:43:00,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:43:00,792 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 335 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 2827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:00,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1390 Invalid, 2827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:00,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2022-02-15 13:43:00,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 5554. [2022-02-15 13:43:00,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 3.4968485503331532) internal successors, (19418), 5553 states have internal predecessors, (19418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:00,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19418 transitions. [2022-02-15 13:43:00,886 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19418 transitions. Word has length 47 [2022-02-15 13:43:00,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 19418 transitions. [2022-02-15 13:43:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19418 transitions. [2022-02-15 13:43:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:00,895 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:00,896 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:00,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-02-15 13:43:00,896 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:00,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:00,896 INFO L85 PathProgramCache]: Analyzing trace with hash 800866843, now seen corresponding path program 62 times [2022-02-15 13:43:00,896 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:00,896 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910906007] [2022-02-15 13:43:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:00,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:01,111 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:01,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910906007] [2022-02-15 13:43:01,111 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910906007] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:01,111 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:01,111 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:01,111 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973959622] [2022-02-15 13:43:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:01,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:01,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:01,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:01,112 INFO L87 Difference]: Start difference. First operand 5554 states and 19418 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:02,242 INFO L93 Difference]: Finished difference Result 6616 states and 22995 transitions. [2022-02-15 13:43:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:43:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:02,256 INFO L225 Difference]: With dead ends: 6616 [2022-02-15 13:43:02,256 INFO L226 Difference]: Without dead ends: 6431 [2022-02-15 13:43:02,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:43:02,257 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 455 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 2901 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 2940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:02,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 1447 Invalid, 2940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2901 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:02,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2022-02-15 13:43:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 5558. [2022-02-15 13:43:02,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5558 states, 5557 states have (on average 3.496131005938456) internal successors, (19428), 5557 states have internal predecessors, (19428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 19428 transitions. [2022-02-15 13:43:02,342 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 19428 transitions. Word has length 47 [2022-02-15 13:43:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:02,342 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 19428 transitions. [2022-02-15 13:43:02,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:02,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 19428 transitions. [2022-02-15 13:43:02,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:02,351 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:02,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:02,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-02-15 13:43:02,351 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 683375101, now seen corresponding path program 63 times [2022-02-15 13:43:02,351 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:02,351 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741655937] [2022-02-15 13:43:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:02,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:02,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:02,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741655937] [2022-02-15 13:43:02,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741655937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:02,626 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:02,626 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:02,626 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889066415] [2022-02-15 13:43:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:02,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:02,626 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:02,626 INFO L87 Difference]: Start difference. First operand 5558 states and 19428 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:04,132 INFO L93 Difference]: Finished difference Result 6708 states and 23198 transitions. [2022-02-15 13:43:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:43:04,133 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:04,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:04,147 INFO L225 Difference]: With dead ends: 6708 [2022-02-15 13:43:04,147 INFO L226 Difference]: Without dead ends: 6571 [2022-02-15 13:43:04,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:43:04,148 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 471 mSDsluCounter, 2406 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:04,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 1346 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2022-02-15 13:43:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5564. [2022-02-15 13:43:04,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5564 states, 5563 states have (on average 3.494697105878123) internal successors, (19441), 5563 states have internal predecessors, (19441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:04,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 19441 transitions. [2022-02-15 13:43:04,233 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 19441 transitions. Word has length 47 [2022-02-15 13:43:04,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:04,234 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 19441 transitions. [2022-02-15 13:43:04,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:04,234 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 19441 transitions. [2022-02-15 13:43:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:04,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:04,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:04,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-02-15 13:43:04,243 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:04,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2040170759, now seen corresponding path program 64 times [2022-02-15 13:43:04,243 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:04,243 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667464403] [2022-02-15 13:43:04,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:04,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:04,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:04,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667464403] [2022-02-15 13:43:04,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667464403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:04,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:04,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:04,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215700799] [2022-02-15 13:43:04,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:04,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:04,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:04,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:04,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:04,497 INFO L87 Difference]: Start difference. First operand 5564 states and 19441 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:07,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:07,213 INFO L93 Difference]: Finished difference Result 9630 states and 33745 transitions. [2022-02-15 13:43:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 13:43:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:07,235 INFO L225 Difference]: With dead ends: 9630 [2022-02-15 13:43:07,235 INFO L226 Difference]: Without dead ends: 9390 [2022-02-15 13:43:07,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=339, Invalid=3567, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:43:07,236 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 667 mSDsluCounter, 4449 mSDsCounter, 0 mSdLazyCounter, 5168 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 2827 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 5168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:07,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 2827 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 5168 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:43:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2022-02-15 13:43:07,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 5588. [2022-02-15 13:43:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5587 states have (on average 3.491856094505101) internal successors, (19509), 5587 states have internal predecessors, (19509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:07,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19509 transitions. [2022-02-15 13:43:07,349 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19509 transitions. Word has length 47 [2022-02-15 13:43:07,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:07,350 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 19509 transitions. [2022-02-15 13:43:07,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19509 transitions. [2022-02-15 13:43:07,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:07,359 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:07,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:07,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-02-15 13:43:07,359 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1741279081, now seen corresponding path program 65 times [2022-02-15 13:43:07,359 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:07,359 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111332326] [2022-02-15 13:43:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:07,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:07,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:07,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:07,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111332326] [2022-02-15 13:43:07,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111332326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:07,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:07,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:07,544 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24976792] [2022-02-15 13:43:07,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:07,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:07,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:07,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:07,544 INFO L87 Difference]: Start difference. First operand 5588 states and 19509 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:08,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:08,510 INFO L93 Difference]: Finished difference Result 6683 states and 23098 transitions. [2022-02-15 13:43:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:43:08,510 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:08,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:08,526 INFO L225 Difference]: With dead ends: 6683 [2022-02-15 13:43:08,526 INFO L226 Difference]: Without dead ends: 6586 [2022-02-15 13:43:08,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:43:08,526 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 412 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 2830 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:08,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1415 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2830 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:08,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2022-02-15 13:43:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 5596. [2022-02-15 13:43:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 5595 states have (on average 3.4900804289544234) internal successors, (19527), 5595 states have internal predecessors, (19527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:08,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 19527 transitions. [2022-02-15 13:43:08,642 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 19527 transitions. Word has length 47 [2022-02-15 13:43:08,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:08,643 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 19527 transitions. [2022-02-15 13:43:08,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:08,643 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 19527 transitions. [2022-02-15 13:43:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:08,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:08,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:08,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-02-15 13:43:08,652 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:08,652 INFO L85 PathProgramCache]: Analyzing trace with hash 828267705, now seen corresponding path program 66 times [2022-02-15 13:43:08,652 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:08,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783519930] [2022-02-15 13:43:08,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:08,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:08,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:08,837 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:08,837 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783519930] [2022-02-15 13:43:08,837 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783519930] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:08,837 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:08,838 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:08,838 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568935546] [2022-02-15 13:43:08,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:08,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:08,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:08,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:08,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:08,838 INFO L87 Difference]: Start difference. First operand 5596 states and 19527 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:09,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:09,701 INFO L93 Difference]: Finished difference Result 6504 states and 22553 transitions. [2022-02-15 13:43:09,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:43:09,701 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:09,715 INFO L225 Difference]: With dead ends: 6504 [2022-02-15 13:43:09,715 INFO L226 Difference]: Without dead ends: 6405 [2022-02-15 13:43:09,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:43:09,716 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 343 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:09,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1253 Invalid, 2658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2022-02-15 13:43:09,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5588. [2022-02-15 13:43:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 5587 states have (on average 3.4914981206371936) internal successors, (19507), 5587 states have internal predecessors, (19507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19507 transitions. [2022-02-15 13:43:09,810 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19507 transitions. Word has length 47 [2022-02-15 13:43:09,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:09,811 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 19507 transitions. [2022-02-15 13:43:09,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19507 transitions. [2022-02-15 13:43:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:09,819 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:09,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:09,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-02-15 13:43:09,819 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:09,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:09,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1904012269, now seen corresponding path program 67 times [2022-02-15 13:43:09,820 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:09,820 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389958858] [2022-02-15 13:43:09,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:09,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:09,986 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:09,986 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389958858] [2022-02-15 13:43:09,986 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389958858] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:09,986 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:09,986 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:09,986 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433036066] [2022-02-15 13:43:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:09,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:09,986 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:09,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:09,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:09,986 INFO L87 Difference]: Start difference. First operand 5588 states and 19507 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:10,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:10,823 INFO L93 Difference]: Finished difference Result 6489 states and 22536 transitions. [2022-02-15 13:43:10,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:43:10,823 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:10,838 INFO L225 Difference]: With dead ends: 6489 [2022-02-15 13:43:10,838 INFO L226 Difference]: Without dead ends: 6344 [2022-02-15 13:43:10,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:43:10,838 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 327 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:10,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 1196 Invalid, 2422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2022-02-15 13:43:10,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 5600. [2022-02-15 13:43:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 3.4893731023397034) internal successors, (19537), 5599 states have internal predecessors, (19537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19537 transitions. [2022-02-15 13:43:10,930 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19537 transitions. Word has length 47 [2022-02-15 13:43:10,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:10,931 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 19537 transitions. [2022-02-15 13:43:10,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19537 transitions. [2022-02-15 13:43:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:10,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:10,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:10,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-02-15 13:43:10,940 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash -39440437, now seen corresponding path program 68 times [2022-02-15 13:43:10,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:10,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436496613] [2022-02-15 13:43:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:10,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:11,205 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:11,205 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436496613] [2022-02-15 13:43:11,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436496613] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:11,206 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:11,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:11,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093913241] [2022-02-15 13:43:11,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:11,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:11,206 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:11,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:11,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:11,206 INFO L87 Difference]: Start difference. First operand 5600 states and 19537 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:12,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:12,259 INFO L93 Difference]: Finished difference Result 6510 states and 22540 transitions. [2022-02-15 13:43:12,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:43:12,260 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:12,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:12,273 INFO L225 Difference]: With dead ends: 6510 [2022-02-15 13:43:12,273 INFO L226 Difference]: Without dead ends: 6413 [2022-02-15 13:43:12,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:43:12,274 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 362 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 2612 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 2633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:12,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1327 Invalid, 2633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2612 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2022-02-15 13:43:12,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 5606. [2022-02-15 13:43:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5606 states, 5605 states have (on average 3.488314005352364) internal successors, (19552), 5605 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:12,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 19552 transitions. [2022-02-15 13:43:12,402 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 19552 transitions. Word has length 47 [2022-02-15 13:43:12,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:12,403 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 19552 transitions. [2022-02-15 13:43:12,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:12,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 19552 transitions. [2022-02-15 13:43:12,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:12,412 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:12,412 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:12,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-02-15 13:43:12,412 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:12,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:12,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1764860947, now seen corresponding path program 69 times [2022-02-15 13:43:12,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:12,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297091382] [2022-02-15 13:43:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:12,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:12,640 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:12,640 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297091382] [2022-02-15 13:43:12,640 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297091382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:12,640 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:12,640 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:12,640 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264652582] [2022-02-15 13:43:12,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:12,640 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:12,641 INFO L87 Difference]: Start difference. First operand 5606 states and 19552 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:13,626 INFO L93 Difference]: Finished difference Result 6331 states and 21995 transitions. [2022-02-15 13:43:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:43:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:13,640 INFO L225 Difference]: With dead ends: 6331 [2022-02-15 13:43:13,640 INFO L226 Difference]: Without dead ends: 6170 [2022-02-15 13:43:13,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:43:13,641 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 296 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:13,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 1145 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2022-02-15 13:43:13,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5536. [2022-02-15 13:43:13,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 5535 states have (on average 3.499728997289973) internal successors, (19371), 5535 states have internal predecessors, (19371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:13,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 19371 transitions. [2022-02-15 13:43:13,732 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 19371 transitions. Word has length 47 [2022-02-15 13:43:13,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:13,732 INFO L470 AbstractCegarLoop]: Abstraction has 5536 states and 19371 transitions. [2022-02-15 13:43:13,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:13,732 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 19371 transitions. [2022-02-15 13:43:13,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:13,741 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:13,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:13,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-02-15 13:43:13,741 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:13,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:13,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1533599137, now seen corresponding path program 70 times [2022-02-15 13:43:13,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:13,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802765210] [2022-02-15 13:43:13,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:13,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:13,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:13,969 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:13,969 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802765210] [2022-02-15 13:43:13,969 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802765210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:13,969 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:13,969 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:43:13,969 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442473533] [2022-02-15 13:43:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:13,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:43:13,970 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:13,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:43:13,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:43:13,970 INFO L87 Difference]: Start difference. First operand 5536 states and 19371 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:14,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:14,910 INFO L93 Difference]: Finished difference Result 6663 states and 23163 transitions. [2022-02-15 13:43:14,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:43:14,910 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:14,924 INFO L225 Difference]: With dead ends: 6663 [2022-02-15 13:43:14,925 INFO L226 Difference]: Without dead ends: 6526 [2022-02-15 13:43:14,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:43:14,939 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 381 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 2319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:14,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1147 Invalid, 2319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2022-02-15 13:43:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 5556. [2022-02-15 13:43:15,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 5555 states have (on average 3.499009900990099) internal successors, (19437), 5555 states have internal predecessors, (19437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:15,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 19437 transitions. [2022-02-15 13:43:15,039 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 19437 transitions. Word has length 47 [2022-02-15 13:43:15,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:15,040 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 19437 transitions. [2022-02-15 13:43:15,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:15,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 19437 transitions. [2022-02-15 13:43:15,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:15,049 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:15,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:15,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-02-15 13:43:15,049 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash -15902915, now seen corresponding path program 71 times [2022-02-15 13:43:15,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:15,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997164330] [2022-02-15 13:43:15,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:15,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:15,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:15,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997164330] [2022-02-15 13:43:15,300 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997164330] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:15,300 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:15,300 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:15,300 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186819239] [2022-02-15 13:43:15,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:15,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:15,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:15,300 INFO L87 Difference]: Start difference. First operand 5556 states and 19437 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:16,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:16,587 INFO L93 Difference]: Finished difference Result 6722 states and 23322 transitions. [2022-02-15 13:43:16,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:43:16,587 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:16,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:16,603 INFO L225 Difference]: With dead ends: 6722 [2022-02-15 13:43:16,603 INFO L226 Difference]: Without dead ends: 6633 [2022-02-15 13:43:16,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:43:16,604 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 447 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:16,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [447 Valid, 1202 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:16,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2022-02-15 13:43:16,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5652. [2022-02-15 13:43:16,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5651 states have (on average 3.4919483277296055) internal successors, (19733), 5651 states have internal predecessors, (19733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 19733 transitions. [2022-02-15 13:43:16,757 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 19733 transitions. Word has length 47 [2022-02-15 13:43:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:16,757 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 19733 transitions. [2022-02-15 13:43:16,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:16,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 19733 transitions. [2022-02-15 13:43:16,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:16,766 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:16,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:16,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-02-15 13:43:16,767 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:16,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:16,767 INFO L85 PathProgramCache]: Analyzing trace with hash 418126431, now seen corresponding path program 72 times [2022-02-15 13:43:16,767 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:16,767 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38528977] [2022-02-15 13:43:16,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:16,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:16,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:17,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:17,017 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:17,017 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38528977] [2022-02-15 13:43:17,017 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38528977] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:17,017 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:17,017 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:17,017 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158616255] [2022-02-15 13:43:17,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:17,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:17,018 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:17,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:17,018 INFO L87 Difference]: Start difference. First operand 5652 states and 19733 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:18,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:18,238 INFO L93 Difference]: Finished difference Result 6695 states and 23235 transitions. [2022-02-15 13:43:18,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:43:18,239 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:18,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:18,253 INFO L225 Difference]: With dead ends: 6695 [2022-02-15 13:43:18,253 INFO L226 Difference]: Without dead ends: 6470 [2022-02-15 13:43:18,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:43:18,254 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 392 mSDsluCounter, 2488 mSDsCounter, 0 mSdLazyCounter, 2766 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:18,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 1434 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2766 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-02-15 13:43:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5626. [2022-02-15 13:43:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5626 states, 5625 states have (on average 3.4922666666666666) internal successors, (19644), 5625 states have internal predecessors, (19644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 19644 transitions. [2022-02-15 13:43:18,359 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 19644 transitions. Word has length 47 [2022-02-15 13:43:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:18,359 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 19644 transitions. [2022-02-15 13:43:18,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:18,359 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 19644 transitions. [2022-02-15 13:43:18,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:18,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:18,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:18,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-02-15 13:43:18,369 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:18,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1979559917, now seen corresponding path program 73 times [2022-02-15 13:43:18,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:18,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120355191] [2022-02-15 13:43:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:18,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:18,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:18,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120355191] [2022-02-15 13:43:18,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120355191] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:18,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:18,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:18,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62791354] [2022-02-15 13:43:18,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:18,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:18,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:18,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:18,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:18,577 INFO L87 Difference]: Start difference. First operand 5626 states and 19644 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:19,885 INFO L93 Difference]: Finished difference Result 6714 states and 23296 transitions. [2022-02-15 13:43:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:43:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:19,900 INFO L225 Difference]: With dead ends: 6714 [2022-02-15 13:43:19,900 INFO L226 Difference]: Without dead ends: 6625 [2022-02-15 13:43:19,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:43:19,900 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 446 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 2640 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:19,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1284 Invalid, 2675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:19,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2022-02-15 13:43:19,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 5650. [2022-02-15 13:43:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5650 states, 5649 states have (on average 3.4908833421844574) internal successors, (19720), 5649 states have internal predecessors, (19720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:19,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 19720 transitions. [2022-02-15 13:43:19,992 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 19720 transitions. Word has length 47 [2022-02-15 13:43:19,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:19,992 INFO L470 AbstractCegarLoop]: Abstraction has 5650 states and 19720 transitions. [2022-02-15 13:43:19,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 19720 transitions. [2022-02-15 13:43:20,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:20,001 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:20,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:20,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-02-15 13:43:20,001 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:20,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:20,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1881378033, now seen corresponding path program 74 times [2022-02-15 13:43:20,002 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:20,002 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537690777] [2022-02-15 13:43:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:20,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:20,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:20,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537690777] [2022-02-15 13:43:20,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537690777] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:20,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:20,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:20,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936565634] [2022-02-15 13:43:20,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:20,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:20,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:20,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:20,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:20,272 INFO L87 Difference]: Start difference. First operand 5650 states and 19720 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:21,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:21,230 INFO L93 Difference]: Finished difference Result 6722 states and 23316 transitions. [2022-02-15 13:43:21,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:43:21,230 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:21,246 INFO L225 Difference]: With dead ends: 6722 [2022-02-15 13:43:21,246 INFO L226 Difference]: Without dead ends: 6617 [2022-02-15 13:43:21,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:43:21,246 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 445 mSDsluCounter, 2180 mSDsCounter, 0 mSdLazyCounter, 2493 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:21,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1240 Invalid, 2527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2022-02-15 13:43:21,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 5642. [2022-02-15 13:43:21,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5642 states, 5641 states have (on average 3.490870413047332) internal successors, (19692), 5641 states have internal predecessors, (19692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 19692 transitions. [2022-02-15 13:43:21,333 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 19692 transitions. Word has length 47 [2022-02-15 13:43:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:21,333 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 19692 transitions. [2022-02-15 13:43:21,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 19692 transitions. [2022-02-15 13:43:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:21,342 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:21,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:21,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-02-15 13:43:21,342 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash -608444325, now seen corresponding path program 75 times [2022-02-15 13:43:21,343 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:21,343 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037489196] [2022-02-15 13:43:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:21,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:21,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:21,518 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037489196] [2022-02-15 13:43:21,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037489196] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:21,519 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:21,519 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:21,519 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796272298] [2022-02-15 13:43:21,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:21,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:21,519 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:21,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:21,519 INFO L87 Difference]: Start difference. First operand 5642 states and 19692 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:22,410 INFO L93 Difference]: Finished difference Result 6719 states and 23321 transitions. [2022-02-15 13:43:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:43:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:22,425 INFO L225 Difference]: With dead ends: 6719 [2022-02-15 13:43:22,425 INFO L226 Difference]: Without dead ends: 6494 [2022-02-15 13:43:22,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:43:22,426 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 422 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 2600 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:22,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 1273 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2600 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:22,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2022-02-15 13:43:22,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5562. [2022-02-15 13:43:22,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5561 states have (on average 3.4950548462506745) internal successors, (19436), 5561 states have internal predecessors, (19436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 19436 transitions. [2022-02-15 13:43:22,519 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 19436 transitions. Word has length 47 [2022-02-15 13:43:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:22,519 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 19436 transitions. [2022-02-15 13:43:22,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 19436 transitions. [2022-02-15 13:43:22,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:22,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:22,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:22,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-02-15 13:43:22,528 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:22,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:22,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1885476099, now seen corresponding path program 76 times [2022-02-15 13:43:22,528 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:22,528 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125915209] [2022-02-15 13:43:22,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:22,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:22,688 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:22,688 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125915209] [2022-02-15 13:43:22,688 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125915209] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:22,688 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:22,688 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:22,688 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338646603] [2022-02-15 13:43:22,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:22,689 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:22,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:22,689 INFO L87 Difference]: Start difference. First operand 5562 states and 19436 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:24,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:24,316 INFO L93 Difference]: Finished difference Result 8647 states and 30259 transitions. [2022-02-15 13:43:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-02-15 13:43:24,316 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:24,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:24,336 INFO L225 Difference]: With dead ends: 8647 [2022-02-15 13:43:24,336 INFO L226 Difference]: Without dead ends: 8510 [2022-02-15 13:43:24,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=350, Invalid=3310, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 13:43:24,337 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 559 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 4209 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 4209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:24,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1987 Invalid, 4286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 4209 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:43:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2022-02-15 13:43:24,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 5600. [2022-02-15 13:43:24,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5600 states, 5599 states have (on average 3.4911591355599216) internal successors, (19547), 5599 states have internal predecessors, (19547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19547 transitions. [2022-02-15 13:43:24,534 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19547 transitions. Word has length 47 [2022-02-15 13:43:24,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:24,534 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 19547 transitions. [2022-02-15 13:43:24,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19547 transitions. [2022-02-15 13:43:24,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:24,543 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:24,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:24,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-02-15 13:43:24,543 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:24,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:24,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1899007521, now seen corresponding path program 77 times [2022-02-15 13:43:24,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:24,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711570840] [2022-02-15 13:43:24,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:24,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:24,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:24,809 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:24,809 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711570840] [2022-02-15 13:43:24,810 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711570840] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:24,810 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:24,810 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:24,810 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97259619] [2022-02-15 13:43:24,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:24,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:24,810 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:24,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:24,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:24,810 INFO L87 Difference]: Start difference. First operand 5600 states and 19547 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:26,902 INFO L93 Difference]: Finished difference Result 9979 states and 35113 transitions. [2022-02-15 13:43:26,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:43:26,902 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:26,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:26,925 INFO L225 Difference]: With dead ends: 9979 [2022-02-15 13:43:26,925 INFO L226 Difference]: Without dead ends: 9890 [2022-02-15 13:43:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=422, Invalid=4000, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 13:43:26,926 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 731 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 4567 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 4673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 4567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:26,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 2245 Invalid, 4673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 4567 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:43:26,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2022-02-15 13:43:27,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 5604. [2022-02-15 13:43:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5604 states, 5603 states have (on average 3.4900945921827593) internal successors, (19555), 5603 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 19555 transitions. [2022-02-15 13:43:27,040 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 19555 transitions. Word has length 47 [2022-02-15 13:43:27,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:27,040 INFO L470 AbstractCegarLoop]: Abstraction has 5604 states and 19555 transitions. [2022-02-15 13:43:27,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:27,040 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 19555 transitions. [2022-02-15 13:43:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:27,050 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:27,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:27,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-02-15 13:43:27,050 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:27,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1545307867, now seen corresponding path program 78 times [2022-02-15 13:43:27,051 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:27,051 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644284194] [2022-02-15 13:43:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:27,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:27,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:27,278 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:27,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644284194] [2022-02-15 13:43:27,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644284194] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:27,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:27,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:27,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131742018] [2022-02-15 13:43:27,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:27,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:27,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:27,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:27,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:27,279 INFO L87 Difference]: Start difference. First operand 5604 states and 19555 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:30,078 INFO L93 Difference]: Finished difference Result 10566 states and 37503 transitions. [2022-02-15 13:43:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 13:43:30,078 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:30,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:30,103 INFO L225 Difference]: With dead ends: 10566 [2022-02-15 13:43:30,103 INFO L226 Difference]: Without dead ends: 10459 [2022-02-15 13:43:30,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=445, Invalid=4667, Unknown=0, NotChecked=0, Total=5112 [2022-02-15 13:43:30,104 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 755 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 5272 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 5373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:30,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 2743 Invalid, 5373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 5272 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:43:30,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2022-02-15 13:43:30,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 5566. [2022-02-15 13:43:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5566 states, 5565 states have (on average 3.4936208445642407) internal successors, (19442), 5565 states have internal predecessors, (19442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:30,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 19442 transitions. [2022-02-15 13:43:30,219 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 19442 transitions. Word has length 47 [2022-02-15 13:43:30,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:30,219 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 19442 transitions. [2022-02-15 13:43:30,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:30,219 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 19442 transitions. [2022-02-15 13:43:30,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:30,228 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:30,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:30,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-02-15 13:43:30,228 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:30,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:30,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1445941727, now seen corresponding path program 79 times [2022-02-15 13:43:30,229 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:30,229 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063653034] [2022-02-15 13:43:30,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:30,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:30,471 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:30,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063653034] [2022-02-15 13:43:30,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063653034] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:30,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:30,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:30,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403677030] [2022-02-15 13:43:30,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:30,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:30,472 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:30,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:30,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:30,472 INFO L87 Difference]: Start difference. First operand 5566 states and 19442 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:31,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:31,978 INFO L93 Difference]: Finished difference Result 6918 states and 23853 transitions. [2022-02-15 13:43:31,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:43:31,978 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:31,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:31,993 INFO L225 Difference]: With dead ends: 6918 [2022-02-15 13:43:31,993 INFO L226 Difference]: Without dead ends: 6829 [2022-02-15 13:43:31,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:43:31,994 INFO L933 BasicCegarLoop]: 125 mSDtfsCounter, 478 mSDsluCounter, 2506 mSDsCounter, 0 mSdLazyCounter, 2853 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 2890 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2853 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:31,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1362 Invalid, 2890 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2853 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2022-02-15 13:43:32,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 5576. [2022-02-15 13:43:32,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5576 states, 5575 states have (on average 3.4921973094170404) internal successors, (19469), 5575 states have internal predecessors, (19469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:32,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 19469 transitions. [2022-02-15 13:43:32,085 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 19469 transitions. Word has length 47 [2022-02-15 13:43:32,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:32,085 INFO L470 AbstractCegarLoop]: Abstraction has 5576 states and 19469 transitions. [2022-02-15 13:43:32,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 19469 transitions. [2022-02-15 13:43:32,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:32,094 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:32,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:32,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-02-15 13:43:32,094 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:32,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:32,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1122279903, now seen corresponding path program 80 times [2022-02-15 13:43:32,094 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:32,094 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188351043] [2022-02-15 13:43:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:32,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:32,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:32,353 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:32,353 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188351043] [2022-02-15 13:43:32,353 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188351043] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:32,353 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:32,353 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:32,353 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946982519] [2022-02-15 13:43:32,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:32,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:32,354 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:32,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:32,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:32,354 INFO L87 Difference]: Start difference. First operand 5576 states and 19469 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:33,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:33,532 INFO L93 Difference]: Finished difference Result 6835 states and 23610 transitions. [2022-02-15 13:43:33,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:43:33,532 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:33,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:33,547 INFO L225 Difference]: With dead ends: 6835 [2022-02-15 13:43:33,547 INFO L226 Difference]: Without dead ends: 6714 [2022-02-15 13:43:33,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:43:33,547 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 452 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 3005 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 3054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:33,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1424 Invalid, 3054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2022-02-15 13:43:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 5572. [2022-02-15 13:43:33,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5572 states, 5571 states have (on average 3.492191707054389) internal successors, (19455), 5571 states have internal predecessors, (19455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:33,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 19455 transitions. [2022-02-15 13:43:33,639 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 19455 transitions. Word has length 47 [2022-02-15 13:43:33,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:33,639 INFO L470 AbstractCegarLoop]: Abstraction has 5572 states and 19455 transitions. [2022-02-15 13:43:33,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 19455 transitions. [2022-02-15 13:43:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:33,648 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:33,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:33,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-02-15 13:43:33,648 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:33,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:33,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1277604133, now seen corresponding path program 81 times [2022-02-15 13:43:33,648 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:33,648 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572769596] [2022-02-15 13:43:33,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:33,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:33,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:33,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572769596] [2022-02-15 13:43:33,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572769596] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:33,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:33,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:33,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704034131] [2022-02-15 13:43:33,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:33,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:33,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:33,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:33,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:33,898 INFO L87 Difference]: Start difference. First operand 5572 states and 19455 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:35,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:35,370 INFO L93 Difference]: Finished difference Result 7413 states and 25628 transitions. [2022-02-15 13:43:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:43:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:35,387 INFO L225 Difference]: With dead ends: 7413 [2022-02-15 13:43:35,387 INFO L226 Difference]: Without dead ends: 7298 [2022-02-15 13:43:35,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:43:35,388 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 482 mSDsluCounter, 3148 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 3587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:35,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [482 Valid, 1776 Invalid, 3587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3545 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2022-02-15 13:43:35,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 5684. [2022-02-15 13:43:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4867147633292275) internal successors, (19815), 5683 states have internal predecessors, (19815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19815 transitions. [2022-02-15 13:43:35,490 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19815 transitions. Word has length 47 [2022-02-15 13:43:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:35,491 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19815 transitions. [2022-02-15 13:43:35,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19815 transitions. [2022-02-15 13:43:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:35,500 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:35,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:35,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-02-15 13:43:35,500 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:35,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:35,501 INFO L85 PathProgramCache]: Analyzing trace with hash -978712455, now seen corresponding path program 82 times [2022-02-15 13:43:35,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:35,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451396783] [2022-02-15 13:43:35,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:35,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:35,767 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:35,767 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451396783] [2022-02-15 13:43:35,767 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451396783] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:35,767 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:35,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:35,768 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446743010] [2022-02-15 13:43:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:35,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:35,768 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:35,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:35,768 INFO L87 Difference]: Start difference. First operand 5684 states and 19815 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:37,116 INFO L93 Difference]: Finished difference Result 6907 states and 23824 transitions. [2022-02-15 13:43:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:43:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:37,132 INFO L225 Difference]: With dead ends: 6907 [2022-02-15 13:43:37,132 INFO L226 Difference]: Without dead ends: 6810 [2022-02-15 13:43:37,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:43:37,133 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 409 mSDsluCounter, 2787 mSDsCounter, 0 mSdLazyCounter, 3075 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:37,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1506 Invalid, 3110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3075 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2022-02-15 13:43:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 5698. [2022-02-15 13:43:37,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 3.482885729331227) internal successors, (19842), 5697 states have internal predecessors, (19842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:37,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 19842 transitions. [2022-02-15 13:43:37,227 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 19842 transitions. Word has length 47 [2022-02-15 13:43:37,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 5698 states and 19842 transitions. [2022-02-15 13:43:37,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 19842 transitions. [2022-02-15 13:43:37,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:37,237 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:37,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:37,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-02-15 13:43:37,238 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:37,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:37,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1590834331, now seen corresponding path program 83 times [2022-02-15 13:43:37,238 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:37,238 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732350624] [2022-02-15 13:43:37,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:37,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:37,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:37,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732350624] [2022-02-15 13:43:37,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732350624] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:37,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:37,498 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:37,498 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466948926] [2022-02-15 13:43:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:37,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:37,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:37,498 INFO L87 Difference]: Start difference. First operand 5698 states and 19842 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:38,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:38,484 INFO L93 Difference]: Finished difference Result 6883 states and 23734 transitions. [2022-02-15 13:43:38,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:43:38,485 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:38,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:38,553 INFO L225 Difference]: With dead ends: 6883 [2022-02-15 13:43:38,553 INFO L226 Difference]: Without dead ends: 6778 [2022-02-15 13:43:38,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:43:38,554 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 397 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 2892 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:38,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1424 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2892 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:38,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2022-02-15 13:43:38,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5684. [2022-02-15 13:43:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4856589829315503) internal successors, (19809), 5683 states have internal predecessors, (19809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:38,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19809 transitions. [2022-02-15 13:43:38,641 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19809 transitions. Word has length 47 [2022-02-15 13:43:38,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:38,641 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19809 transitions. [2022-02-15 13:43:38,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:38,641 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19809 transitions. [2022-02-15 13:43:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:38,650 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:38,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:38,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-02-15 13:43:38,650 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:38,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:38,651 INFO L85 PathProgramCache]: Analyzing trace with hash -384565221, now seen corresponding path program 84 times [2022-02-15 13:43:38,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:38,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948922627] [2022-02-15 13:43:38,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:38,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:38,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:38,917 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:38,917 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948922627] [2022-02-15 13:43:38,917 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948922627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:38,917 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:38,917 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:38,918 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723120063] [2022-02-15 13:43:38,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:38,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:38,918 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:38,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:38,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:38,918 INFO L87 Difference]: Start difference. First operand 5684 states and 19809 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:40,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:40,237 INFO L93 Difference]: Finished difference Result 6810 states and 23594 transitions. [2022-02-15 13:43:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:43:40,237 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:40,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:40,252 INFO L225 Difference]: With dead ends: 6810 [2022-02-15 13:43:40,252 INFO L226 Difference]: Without dead ends: 6721 [2022-02-15 13:43:40,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:43:40,252 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 522 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:40,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1339 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2022-02-15 13:43:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 5704. [2022-02-15 13:43:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.485709275819744) internal successors, (19879), 5703 states have internal predecessors, (19879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19879 transitions. [2022-02-15 13:43:40,343 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19879 transitions. Word has length 47 [2022-02-15 13:43:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:40,343 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19879 transitions. [2022-02-15 13:43:40,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:40,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19879 transitions. [2022-02-15 13:43:40,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:40,352 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:40,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:40,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-02-15 13:43:40,353 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:40,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash -708227045, now seen corresponding path program 85 times [2022-02-15 13:43:40,353 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:40,353 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928093507] [2022-02-15 13:43:40,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:40,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:40,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:40,526 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:40,526 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928093507] [2022-02-15 13:43:40,526 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928093507] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:40,526 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:40,527 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:40,527 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359269006] [2022-02-15 13:43:40,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:40,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:40,527 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:40,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:40,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:40,527 INFO L87 Difference]: Start difference. First operand 5704 states and 19879 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:41,743 INFO L93 Difference]: Finished difference Result 6822 states and 23626 transitions. [2022-02-15 13:43:41,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:43:41,744 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:41,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:41,759 INFO L225 Difference]: With dead ends: 6822 [2022-02-15 13:43:41,759 INFO L226 Difference]: Without dead ends: 6693 [2022-02-15 13:43:41,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:43:41,759 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 502 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2865 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:41,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1359 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2865 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2022-02-15 13:43:41,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 5706. [2022-02-15 13:43:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5706 states, 5705 states have (on average 3.4839614373356707) internal successors, (19876), 5705 states have internal predecessors, (19876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:41,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 19876 transitions. [2022-02-15 13:43:41,852 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 19876 transitions. Word has length 47 [2022-02-15 13:43:41,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:41,852 INFO L470 AbstractCegarLoop]: Abstraction has 5706 states and 19876 transitions. [2022-02-15 13:43:41,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:41,852 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 19876 transitions. [2022-02-15 13:43:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:41,861 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:41,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:41,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-02-15 13:43:41,861 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:41,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -652115591, now seen corresponding path program 86 times [2022-02-15 13:43:41,861 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:41,861 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888529580] [2022-02-15 13:43:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:41,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:42,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:42,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:42,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888529580] [2022-02-15 13:43:42,084 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888529580] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:42,084 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:42,084 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:42,084 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634349077] [2022-02-15 13:43:42,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:42,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:42,085 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:42,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:42,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:42,085 INFO L87 Difference]: Start difference. First operand 5706 states and 19876 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:43,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:43,488 INFO L93 Difference]: Finished difference Result 6855 states and 23757 transitions. [2022-02-15 13:43:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:43:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:43,505 INFO L225 Difference]: With dead ends: 6855 [2022-02-15 13:43:43,505 INFO L226 Difference]: Without dead ends: 6694 [2022-02-15 13:43:43,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:43:43,507 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 476 mSDsluCounter, 2602 mSDsCounter, 0 mSdLazyCounter, 2947 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:43,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1420 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2947 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2022-02-15 13:43:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 5690. [2022-02-15 13:43:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5690 states, 5689 states have (on average 3.4846194410265423) internal successors, (19824), 5689 states have internal predecessors, (19824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:43,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 19824 transitions. [2022-02-15 13:43:43,611 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 19824 transitions. Word has length 47 [2022-02-15 13:43:43,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:43,611 INFO L470 AbstractCegarLoop]: Abstraction has 5690 states and 19824 transitions. [2022-02-15 13:43:43,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:43,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 19824 transitions. [2022-02-15 13:43:43,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:43,621 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:43,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:43,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-02-15 13:43:43,621 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:43,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1844482075, now seen corresponding path program 87 times [2022-02-15 13:43:43,621 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:43,622 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14205413] [2022-02-15 13:43:43,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:43,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:43,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:43,858 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:43,858 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14205413] [2022-02-15 13:43:43,858 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14205413] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:43,858 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:43,858 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:43,858 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328402913] [2022-02-15 13:43:43,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:43,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:43,859 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:43,859 INFO L87 Difference]: Start difference. First operand 5690 states and 19824 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:46,114 INFO L93 Difference]: Finished difference Result 8085 states and 28237 transitions. [2022-02-15 13:43:46,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 13:43:46,114 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:46,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:46,132 INFO L225 Difference]: With dead ends: 8085 [2022-02-15 13:43:46,132 INFO L226 Difference]: Without dead ends: 7980 [2022-02-15 13:43:46,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2022-02-15 13:43:46,133 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 640 mSDsluCounter, 3529 mSDsCounter, 0 mSdLazyCounter, 4003 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 4075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:46,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 2244 Invalid, 4075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4003 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:43:46,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2022-02-15 13:43:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5716. [2022-02-15 13:43:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 3.483639545056868) internal successors, (19909), 5715 states have internal predecessors, (19909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:46,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19909 transitions. [2022-02-15 13:43:46,233 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19909 transitions. Word has length 47 [2022-02-15 13:43:46,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:46,233 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19909 transitions. [2022-02-15 13:43:46,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:46,233 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19909 transitions. [2022-02-15 13:43:46,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:46,242 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:46,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:46,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-02-15 13:43:46,246 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:46,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1069364473, now seen corresponding path program 88 times [2022-02-15 13:43:46,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:46,248 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769417573] [2022-02-15 13:43:46,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:46,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:46,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:46,533 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:46,533 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769417573] [2022-02-15 13:43:46,533 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769417573] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:46,533 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:46,533 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:46,533 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931799432] [2022-02-15 13:43:46,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:46,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:46,533 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:46,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:46,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:46,534 INFO L87 Difference]: Start difference. First operand 5716 states and 19909 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:48,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:48,088 INFO L93 Difference]: Finished difference Result 7773 states and 27009 transitions. [2022-02-15 13:43:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 13:43:48,088 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:48,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:48,105 INFO L225 Difference]: With dead ends: 7773 [2022-02-15 13:43:48,105 INFO L226 Difference]: Without dead ends: 7678 [2022-02-15 13:43:48,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 13:43:48,106 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 563 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:48,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1929 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:43:48,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2022-02-15 13:43:48,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5708. [2022-02-15 13:43:48,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5707 states have (on average 3.485018398458034) internal successors, (19889), 5707 states have internal predecessors, (19889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:48,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19889 transitions. [2022-02-15 13:43:48,201 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19889 transitions. Word has length 47 [2022-02-15 13:43:48,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:48,201 INFO L470 AbstractCegarLoop]: Abstraction has 5708 states and 19889 transitions. [2022-02-15 13:43:48,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:48,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19889 transitions. [2022-02-15 13:43:48,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:48,209 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:48,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:48,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-02-15 13:43:48,210 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:48,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:48,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1368256151, now seen corresponding path program 89 times [2022-02-15 13:43:48,210 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:48,210 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496203538] [2022-02-15 13:43:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:48,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:48,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:48,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496203538] [2022-02-15 13:43:48,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496203538] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:48,398 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:48,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:48,398 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286361740] [2022-02-15 13:43:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:48,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:48,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:48,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:48,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:48,399 INFO L87 Difference]: Start difference. First operand 5708 states and 19889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:49,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:49,480 INFO L93 Difference]: Finished difference Result 6958 states and 23989 transitions. [2022-02-15 13:43:49,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:43:49,480 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:49,495 INFO L225 Difference]: With dead ends: 6958 [2022-02-15 13:43:49,495 INFO L226 Difference]: Without dead ends: 6861 [2022-02-15 13:43:49,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:43:49,497 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 478 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 2665 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 2665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:49,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1209 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 2665 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:49,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2022-02-15 13:43:49,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 5716. [2022-02-15 13:43:49,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5716 states, 5715 states have (on average 3.4832895888013997) internal successors, (19907), 5715 states have internal predecessors, (19907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:49,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19907 transitions. [2022-02-15 13:43:49,589 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19907 transitions. Word has length 47 [2022-02-15 13:43:49,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:49,589 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19907 transitions. [2022-02-15 13:43:49,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:49,589 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19907 transitions. [2022-02-15 13:43:49,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:49,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:49,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:49,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-02-15 13:43:49,598 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:49,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash -357164359, now seen corresponding path program 90 times [2022-02-15 13:43:49,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:49,598 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578019343] [2022-02-15 13:43:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:49,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:49,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:49,867 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:49,867 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578019343] [2022-02-15 13:43:49,868 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578019343] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:49,868 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:49,868 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:49,868 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187364418] [2022-02-15 13:43:49,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:49,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:49,868 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:49,868 INFO L87 Difference]: Start difference. First operand 5716 states and 19907 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:51,014 INFO L93 Difference]: Finished difference Result 6934 states and 23899 transitions. [2022-02-15 13:43:51,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:43:51,014 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:51,030 INFO L225 Difference]: With dead ends: 6934 [2022-02-15 13:43:51,031 INFO L226 Difference]: Without dead ends: 6835 [2022-02-15 13:43:51,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:43:51,031 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 437 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 2698 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:51,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1240 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2698 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2022-02-15 13:43:51,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 5708. [2022-02-15 13:43:51,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5708 states, 5707 states have (on average 3.4846679516383388) internal successors, (19887), 5707 states have internal predecessors, (19887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:51,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19887 transitions. [2022-02-15 13:43:51,137 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19887 transitions. Word has length 47 [2022-02-15 13:43:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:51,137 INFO L470 AbstractCegarLoop]: Abstraction has 5708 states and 19887 transitions. [2022-02-15 13:43:51,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19887 transitions. [2022-02-15 13:43:51,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:51,147 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:51,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:51,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-02-15 13:43:51,147 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:51,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:51,147 INFO L85 PathProgramCache]: Analyzing trace with hash 718580205, now seen corresponding path program 91 times [2022-02-15 13:43:51,147 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:51,147 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27864669] [2022-02-15 13:43:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:51,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:51,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:51,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:51,334 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:51,334 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27864669] [2022-02-15 13:43:51,334 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27864669] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:51,334 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:51,334 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:51,334 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771453795] [2022-02-15 13:43:51,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:51,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:51,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:51,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:51,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:51,335 INFO L87 Difference]: Start difference. First operand 5708 states and 19887 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:52,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:52,385 INFO L93 Difference]: Finished difference Result 6809 states and 23600 transitions. [2022-02-15 13:43:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:43:52,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:52,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:52,400 INFO L225 Difference]: With dead ends: 6809 [2022-02-15 13:43:52,400 INFO L226 Difference]: Without dead ends: 6664 [2022-02-15 13:43:52,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:43:52,400 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 461 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 2963 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1411 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:52,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1411 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2963 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:43:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2022-02-15 13:43:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 5720. [2022-02-15 13:43:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.4826018534708867) internal successors, (19917), 5719 states have internal predecessors, (19917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2022-02-15 13:43:52,486 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2022-02-15 13:43:52,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:52,486 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2022-02-15 13:43:52,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:52,486 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2022-02-15 13:43:52,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:52,494 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:52,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:52,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-02-15 13:43:52,495 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:52,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1224872501, now seen corresponding path program 92 times [2022-02-15 13:43:52,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:52,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435214816] [2022-02-15 13:43:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:52,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:52,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:52,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435214816] [2022-02-15 13:43:52,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435214816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:52,660 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:52,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:52,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227341348] [2022-02-15 13:43:52,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:52,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:52,660 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:52,660 INFO L87 Difference]: Start difference. First operand 5720 states and 19917 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:53,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:53,590 INFO L93 Difference]: Finished difference Result 6809 states and 23523 transitions. [2022-02-15 13:43:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:43:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:53,607 INFO L225 Difference]: With dead ends: 6809 [2022-02-15 13:43:53,607 INFO L226 Difference]: Without dead ends: 6712 [2022-02-15 13:43:53,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:43:53,607 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 439 mSDsluCounter, 2304 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:53,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1224 Invalid, 2666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:53,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2022-02-15 13:43:53,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 5726. [2022-02-15 13:43:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5726 states, 5725 states have (on average 3.481572052401747) internal successors, (19932), 5725 states have internal predecessors, (19932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:53,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 19932 transitions. [2022-02-15 13:43:53,713 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 19932 transitions. Word has length 47 [2022-02-15 13:43:53,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:53,713 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 19932 transitions. [2022-02-15 13:43:53,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:53,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 19932 transitions. [2022-02-15 13:43:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:53,723 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:53,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:53,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-02-15 13:43:53,723 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1344674285, now seen corresponding path program 93 times [2022-02-15 13:43:53,723 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:53,723 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39360332] [2022-02-15 13:43:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:53,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:53,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:53,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:53,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39360332] [2022-02-15 13:43:53,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39360332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:53,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:53,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:43:53,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700783282] [2022-02-15 13:43:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:53,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:43:53,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:53,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:43:53,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:43:53,898 INFO L87 Difference]: Start difference. First operand 5726 states and 19932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:54,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:54,837 INFO L93 Difference]: Finished difference Result 6710 states and 23218 transitions. [2022-02-15 13:43:54,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:43:54,838 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:54,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:54,853 INFO L225 Difference]: With dead ends: 6710 [2022-02-15 13:43:54,853 INFO L226 Difference]: Without dead ends: 6581 [2022-02-15 13:43:54,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:43:54,853 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 386 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:54,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1306 Invalid, 2799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:54,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2022-02-15 13:43:54,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 5688. [2022-02-15 13:43:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5688 states, 5687 states have (on average 3.489185862493406) internal successors, (19843), 5687 states have internal predecessors, (19843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:54,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 19843 transitions. [2022-02-15 13:43:54,950 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 19843 transitions. Word has length 47 [2022-02-15 13:43:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:54,950 INFO L470 AbstractCegarLoop]: Abstraction has 5688 states and 19843 transitions. [2022-02-15 13:43:54,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:54,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 19843 transitions. [2022-02-15 13:43:54,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:54,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:54,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-02-15 13:43:54,959 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1118815907, now seen corresponding path program 94 times [2022-02-15 13:43:54,960 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:54,960 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791081283] [2022-02-15 13:43:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:54,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:54,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:55,139 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:55,139 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791081283] [2022-02-15 13:43:55,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791081283] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:55,139 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:55,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:43:55,140 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351077854] [2022-02-15 13:43:55,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:55,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:43:55,140 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:55,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:43:55,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:43:55,140 INFO L87 Difference]: Start difference. First operand 5688 states and 19843 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:55,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:55,951 INFO L93 Difference]: Finished difference Result 6627 states and 22989 transitions. [2022-02-15 13:43:55,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:43:55,952 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:55,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:55,967 INFO L225 Difference]: With dead ends: 6627 [2022-02-15 13:43:55,968 INFO L226 Difference]: Without dead ends: 6490 [2022-02-15 13:43:55,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:43:55,968 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 305 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 2430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:55,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 1235 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 13:43:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-02-15 13:43:56,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 5704. [2022-02-15 13:43:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4878134315272664) internal successors, (19891), 5703 states have internal predecessors, (19891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19891 transitions. [2022-02-15 13:43:56,060 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19891 transitions. Word has length 47 [2022-02-15 13:43:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:56,061 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19891 transitions. [2022-02-15 13:43:56,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19891 transitions. [2022-02-15 13:43:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:56,070 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:56,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:56,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-02-15 13:43:56,070 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:56,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 398880315, now seen corresponding path program 95 times [2022-02-15 13:43:56,070 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:56,070 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413114511] [2022-02-15 13:43:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:56,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:56,246 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:56,247 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413114511] [2022-02-15 13:43:56,247 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413114511] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:56,247 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:56,247 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:56,247 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956123838] [2022-02-15 13:43:56,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:56,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:56,247 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:56,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:56,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:56,247 INFO L87 Difference]: Start difference. First operand 5704 states and 19891 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:57,110 INFO L93 Difference]: Finished difference Result 6686 states and 23148 transitions. [2022-02-15 13:43:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:43:57,110 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:57,126 INFO L225 Difference]: With dead ends: 6686 [2022-02-15 13:43:57,126 INFO L226 Difference]: Without dead ends: 6597 [2022-02-15 13:43:57,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:43:57,127 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 378 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:57,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 1217 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:43:57,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2022-02-15 13:43:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 5768. [2022-02-15 13:43:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.486561470435235) internal successors, (20107), 5767 states have internal predecessors, (20107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20107 transitions. [2022-02-15 13:43:57,223 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20107 transitions. Word has length 47 [2022-02-15 13:43:57,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:57,223 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20107 transitions. [2022-02-15 13:43:57,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:57,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20107 transitions. [2022-02-15 13:43:57,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:57,232 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:57,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:57,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-02-15 13:43:57,232 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 832909661, now seen corresponding path program 96 times [2022-02-15 13:43:57,233 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:57,233 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799170516] [2022-02-15 13:43:57,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:57,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:57,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:57,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799170516] [2022-02-15 13:43:57,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799170516] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:57,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:57,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:57,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920222490] [2022-02-15 13:43:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:57,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:57,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:57,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:57,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:57,440 INFO L87 Difference]: Start difference. First operand 5768 states and 20107 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:58,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:43:58,586 INFO L93 Difference]: Finished difference Result 6579 states and 22821 transitions. [2022-02-15 13:43:58,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:43:58,587 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:43:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:43:58,601 INFO L225 Difference]: With dead ends: 6579 [2022-02-15 13:43:58,601 INFO L226 Difference]: Without dead ends: 6450 [2022-02-15 13:43:58,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:43:58,602 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 307 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 2602 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:43:58,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 1273 Invalid, 2619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2602 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:43:58,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2022-02-15 13:43:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 5768. [2022-02-15 13:43:58,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4823998612796947) internal successors, (20083), 5767 states have internal predecessors, (20083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2022-02-15 13:43:58,695 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2022-02-15 13:43:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:43:58,695 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2022-02-15 13:43:58,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:43:58,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2022-02-15 13:43:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:43:58,704 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:43:58,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:43:58,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-02-15 13:43:58,705 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:43:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:43:58,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1900624149, now seen corresponding path program 97 times [2022-02-15 13:43:58,705 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:43:58,705 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315222442] [2022-02-15 13:43:58,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:43:58,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:43:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:43:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:43:58,907 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:43:58,907 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315222442] [2022-02-15 13:43:58,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315222442] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:43:58,912 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:43:58,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:43:58,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865362543] [2022-02-15 13:43:58,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:43:58,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:43:58,912 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:43:58,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:43:58,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:43:58,913 INFO L87 Difference]: Start difference. First operand 5768 states and 20083 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:00,030 INFO L93 Difference]: Finished difference Result 6638 states and 22988 transitions. [2022-02-15 13:44:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:44:00,030 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:00,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:00,045 INFO L225 Difference]: With dead ends: 6638 [2022-02-15 13:44:00,045 INFO L226 Difference]: Without dead ends: 6549 [2022-02-15 13:44:00,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:44:00,046 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 387 mSDsluCounter, 2277 mSDsCounter, 0 mSdLazyCounter, 2594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 2622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:00,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 1273 Invalid, 2622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2022-02-15 13:44:00,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 5768. [2022-02-15 13:44:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4823998612796947) internal successors, (20083), 5767 states have internal predecessors, (20083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2022-02-15 13:44:00,139 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2022-02-15 13:44:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:00,140 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2022-02-15 13:44:00,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2022-02-15 13:44:00,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:00,149 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:00,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:00,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-02-15 13:44:00,149 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:00,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:00,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1466594803, now seen corresponding path program 98 times [2022-02-15 13:44:00,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:00,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447280533] [2022-02-15 13:44:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:00,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:00,359 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:00,359 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447280533] [2022-02-15 13:44:00,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447280533] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:00,360 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:00,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:00,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794963117] [2022-02-15 13:44:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:00,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:00,360 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:00,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:00,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:00,360 INFO L87 Difference]: Start difference. First operand 5768 states and 20083 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:01,403 INFO L93 Difference]: Finished difference Result 6630 states and 22960 transitions. [2022-02-15 13:44:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:44:01,403 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:01,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:01,418 INFO L225 Difference]: With dead ends: 6630 [2022-02-15 13:44:01,418 INFO L226 Difference]: Without dead ends: 6525 [2022-02-15 13:44:01,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:44:01,419 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 367 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:01,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 1200 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:01,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2022-02-15 13:44:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 5784. [2022-02-15 13:44:01,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4810651910772954) internal successors, (20131), 5783 states have internal predecessors, (20131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20131 transitions. [2022-02-15 13:44:01,512 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20131 transitions. Word has length 47 [2022-02-15 13:44:01,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:01,512 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20131 transitions. [2022-02-15 13:44:01,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:01,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20131 transitions. [2022-02-15 13:44:01,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:01,521 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:01,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:01,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-02-15 13:44:01,521 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:01,523 INFO L85 PathProgramCache]: Analyzing trace with hash -193661095, now seen corresponding path program 99 times [2022-02-15 13:44:01,523 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:01,523 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393168490] [2022-02-15 13:44:01,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:01,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:01,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:01,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:01,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393168490] [2022-02-15 13:44:01,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393168490] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:01,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:01,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:01,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574125778] [2022-02-15 13:44:01,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:01,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:01,731 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:01,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:01,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:01,731 INFO L87 Difference]: Start difference. First operand 5784 states and 20131 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:02,817 INFO L93 Difference]: Finished difference Result 6643 states and 23013 transitions. [2022-02-15 13:44:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:44:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:02,832 INFO L225 Difference]: With dead ends: 6643 [2022-02-15 13:44:02,832 INFO L226 Difference]: Without dead ends: 6390 [2022-02-15 13:44:02,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:44:02,833 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 337 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 2679 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:02,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1361 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2679 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2022-02-15 13:44:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 5676. [2022-02-15 13:44:02,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 3.490925110132159) internal successors, (19811), 5675 states have internal predecessors, (19811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2022-02-15 13:44:02,967 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2022-02-15 13:44:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:02,967 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2022-02-15 13:44:02,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2022-02-15 13:44:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:02,976 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:02,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:02,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-02-15 13:44:02,976 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:02,977 INFO L85 PathProgramCache]: Analyzing trace with hash -79948249, now seen corresponding path program 100 times [2022-02-15 13:44:02,977 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:02,977 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556147576] [2022-02-15 13:44:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:02,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:03,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:03,188 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:03,188 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556147576] [2022-02-15 13:44:03,189 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556147576] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:03,189 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:03,189 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:44:03,189 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971273916] [2022-02-15 13:44:03,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:03,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:44:03,189 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:44:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:44:03,189 INFO L87 Difference]: Start difference. First operand 5676 states and 19811 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:04,343 INFO L93 Difference]: Finished difference Result 6495 states and 22527 transitions. [2022-02-15 13:44:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:44:04,343 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:04,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:04,357 INFO L225 Difference]: With dead ends: 6495 [2022-02-15 13:44:04,357 INFO L226 Difference]: Without dead ends: 6358 [2022-02-15 13:44:04,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:44:04,357 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 302 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 2405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:04,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1156 Invalid, 2405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:04,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2022-02-15 13:44:04,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 5732. [2022-02-15 13:44:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 3.486128075379515) internal successors, (19979), 5731 states have internal predecessors, (19979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19979 transitions. [2022-02-15 13:44:04,441 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19979 transitions. Word has length 47 [2022-02-15 13:44:04,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 19979 transitions. [2022-02-15 13:44:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19979 transitions. [2022-02-15 13:44:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:04,450 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:04,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:04,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-02-15 13:44:04,450 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:04,450 INFO L85 PathProgramCache]: Analyzing trace with hash 637619751, now seen corresponding path program 101 times [2022-02-15 13:44:04,450 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:04,450 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587974098] [2022-02-15 13:44:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:04,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:04,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:04,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587974098] [2022-02-15 13:44:04,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587974098] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:04,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:04,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:04,644 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727753327] [2022-02-15 13:44:04,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:04,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:04,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:04,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:04,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:04,644 INFO L87 Difference]: Start difference. First operand 5732 states and 19979 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:05,630 INFO L93 Difference]: Finished difference Result 6554 states and 22686 transitions. [2022-02-15 13:44:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:44:05,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:05,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:05,645 INFO L225 Difference]: With dead ends: 6554 [2022-02-15 13:44:05,645 INFO L226 Difference]: Without dead ends: 6465 [2022-02-15 13:44:05,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:44:05,646 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 375 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 2455 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:05,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 1140 Invalid, 2479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:44:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2022-02-15 13:44:05,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 5796. [2022-02-15 13:44:05,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4849007765314925) internal successors, (20195), 5795 states have internal predecessors, (20195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20195 transitions. [2022-02-15 13:44:05,737 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20195 transitions. Word has length 47 [2022-02-15 13:44:05,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:05,738 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20195 transitions. [2022-02-15 13:44:05,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:05,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20195 transitions. [2022-02-15 13:44:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:05,747 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:05,747 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:05,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-02-15 13:44:05,747 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:05,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:05,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1046842935, now seen corresponding path program 102 times [2022-02-15 13:44:05,747 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:05,747 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080936495] [2022-02-15 13:44:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:05,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:06,023 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:06,023 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080936495] [2022-02-15 13:44:06,023 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080936495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:06,023 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:06,023 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:06,024 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212785340] [2022-02-15 13:44:06,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:06,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:06,024 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:06,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:06,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:06,024 INFO L87 Difference]: Start difference. First operand 5796 states and 20195 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:07,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:07,209 INFO L93 Difference]: Finished difference Result 6447 states and 22359 transitions. [2022-02-15 13:44:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-02-15 13:44:07,210 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:07,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:07,224 INFO L225 Difference]: With dead ends: 6447 [2022-02-15 13:44:07,224 INFO L226 Difference]: Without dead ends: 6318 [2022-02-15 13:44:07,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:44:07,225 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 310 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:07,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [310 Valid, 1121 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:07,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2022-02-15 13:44:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 5796. [2022-02-15 13:44:07,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4807592752372734) internal successors, (20171), 5795 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:07,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2022-02-15 13:44:07,394 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2022-02-15 13:44:07,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:07,394 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2022-02-15 13:44:07,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2022-02-15 13:44:07,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:07,403 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:07,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:07,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-02-15 13:44:07,403 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:07,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:07,404 INFO L85 PathProgramCache]: Analyzing trace with hash 997297481, now seen corresponding path program 103 times [2022-02-15 13:44:07,404 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:07,404 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176934643] [2022-02-15 13:44:07,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:07,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:07,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:07,643 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:07,643 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176934643] [2022-02-15 13:44:07,643 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176934643] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:07,643 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:07,643 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:07,643 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873213940] [2022-02-15 13:44:07,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:07,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:07,643 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:07,643 INFO L87 Difference]: Start difference. First operand 5796 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:08,925 INFO L93 Difference]: Finished difference Result 6506 states and 22526 transitions. [2022-02-15 13:44:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:44:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:08,940 INFO L225 Difference]: With dead ends: 6506 [2022-02-15 13:44:08,940 INFO L226 Difference]: Without dead ends: 6417 [2022-02-15 13:44:08,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:44:08,940 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 385 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:08,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 1197 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:08,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2022-02-15 13:44:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 5796. [2022-02-15 13:44:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5796 states, 5795 states have (on average 3.4807592752372734) internal successors, (20171), 5795 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:09,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2022-02-15 13:44:09,037 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2022-02-15 13:44:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:09,038 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2022-02-15 13:44:09,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2022-02-15 13:44:09,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:09,046 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:09,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:09,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-02-15 13:44:09,047 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -687165205, now seen corresponding path program 104 times [2022-02-15 13:44:09,047 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:09,047 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302759183] [2022-02-15 13:44:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:09,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:09,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:09,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302759183] [2022-02-15 13:44:09,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302759183] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:09,287 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:09,287 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:09,287 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057764555] [2022-02-15 13:44:09,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:09,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:09,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:09,288 INFO L87 Difference]: Start difference. First operand 5796 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:10,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:10,450 INFO L93 Difference]: Finished difference Result 6498 states and 22498 transitions. [2022-02-15 13:44:10,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:44:10,450 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:10,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:10,465 INFO L225 Difference]: With dead ends: 6498 [2022-02-15 13:44:10,466 INFO L226 Difference]: Without dead ends: 6393 [2022-02-15 13:44:10,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:44:10,466 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 372 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 2320 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:10,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 1061 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2320 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:10,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2022-02-15 13:44:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5812. [2022-02-15 13:44:10,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5812 states, 5811 states have (on average 3.4794355532610566) internal successors, (20219), 5811 states have internal predecessors, (20219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5812 states to 5812 states and 20219 transitions. [2022-02-15 13:44:10,563 INFO L78 Accepts]: Start accepts. Automaton has 5812 states and 20219 transitions. Word has length 47 [2022-02-15 13:44:10,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:10,563 INFO L470 AbstractCegarLoop]: Abstraction has 5812 states and 20219 transitions. [2022-02-15 13:44:10,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5812 states and 20219 transitions. [2022-02-15 13:44:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:10,573 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:10,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:10,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-02-15 13:44:10,573 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:10,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:10,573 INFO L85 PathProgramCache]: Analyzing trace with hash 641532215, now seen corresponding path program 105 times [2022-02-15 13:44:10,573 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:10,573 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436386770] [2022-02-15 13:44:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:10,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:10,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:10,811 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:10,812 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436386770] [2022-02-15 13:44:10,812 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436386770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:10,812 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:10,812 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:10,812 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195344169] [2022-02-15 13:44:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:10,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:10,812 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:10,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:10,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:10,812 INFO L87 Difference]: Start difference. First operand 5812 states and 20219 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:11,797 INFO L93 Difference]: Finished difference Result 6391 states and 22171 transitions. [2022-02-15 13:44:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-02-15 13:44:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:11,811 INFO L225 Difference]: With dead ends: 6391 [2022-02-15 13:44:11,812 INFO L226 Difference]: Without dead ends: 6118 [2022-02-15 13:44:11,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:44:11,812 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 302 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:11,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 1133 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:11,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2022-02-15 13:44:11,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5684. [2022-02-15 13:44:11,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5684 states, 5683 states have (on average 3.4888263241245823) internal successors, (19827), 5683 states have internal predecessors, (19827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:11,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19827 transitions. [2022-02-15 13:44:11,928 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19827 transitions. Word has length 47 [2022-02-15 13:44:11,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:11,928 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19827 transitions. [2022-02-15 13:44:11,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:11,929 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19827 transitions. [2022-02-15 13:44:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:11,937 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:11,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:11,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-02-15 13:44:11,938 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:11,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:11,938 INFO L85 PathProgramCache]: Analyzing trace with hash -162376707, now seen corresponding path program 106 times [2022-02-15 13:44:11,938 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:11,938 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515649569] [2022-02-15 13:44:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:11,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:12,165 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:12,165 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515649569] [2022-02-15 13:44:12,165 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515649569] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:12,165 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:12,165 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:44:12,165 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898215739] [2022-02-15 13:44:12,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:12,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:44:12,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:12,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:44:12,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:44:12,166 INFO L87 Difference]: Start difference. First operand 5684 states and 19827 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:13,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:13,362 INFO L93 Difference]: Finished difference Result 6651 states and 23069 transitions. [2022-02-15 13:44:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:44:13,362 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:13,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:13,377 INFO L225 Difference]: With dead ends: 6651 [2022-02-15 13:44:13,377 INFO L226 Difference]: Without dead ends: 6514 [2022-02-15 13:44:13,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:44:13,377 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 354 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 2374 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:13,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1176 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2022-02-15 13:44:13,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 5704. [2022-02-15 13:44:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.488164124145187) internal successors, (19893), 5703 states have internal predecessors, (19893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19893 transitions. [2022-02-15 13:44:13,468 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19893 transitions. Word has length 47 [2022-02-15 13:44:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:13,468 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19893 transitions. [2022-02-15 13:44:13,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19893 transitions. [2022-02-15 13:44:13,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:13,477 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:13,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:13,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-02-15 13:44:13,477 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:13,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1355319515, now seen corresponding path program 107 times [2022-02-15 13:44:13,478 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:13,478 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748800746] [2022-02-15 13:44:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:13,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:13,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:13,737 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:13,737 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748800746] [2022-02-15 13:44:13,737 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748800746] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:13,737 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:13,737 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:13,737 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291066275] [2022-02-15 13:44:13,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:13,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:13,738 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:13,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:13,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:13,738 INFO L87 Difference]: Start difference. First operand 5704 states and 19893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:15,043 INFO L93 Difference]: Finished difference Result 6710 states and 23228 transitions. [2022-02-15 13:44:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:44:15,044 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:15,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:15,058 INFO L225 Difference]: With dead ends: 6710 [2022-02-15 13:44:15,058 INFO L226 Difference]: Without dead ends: 6621 [2022-02-15 13:44:15,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:44:15,061 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 420 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1227 SdHoareTripleChecker+Invalid, 2612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:15,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1227 Invalid, 2612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:15,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2022-02-15 13:44:15,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 5768. [2022-02-15 13:44:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4869082711981965) internal successors, (20109), 5767 states have internal predecessors, (20109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:15,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20109 transitions. [2022-02-15 13:44:15,154 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20109 transitions. Word has length 47 [2022-02-15 13:44:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:15,154 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20109 transitions. [2022-02-15 13:44:15,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20109 transitions. [2022-02-15 13:44:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:15,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:15,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:15,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-02-15 13:44:15,163 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:15,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1789348861, now seen corresponding path program 108 times [2022-02-15 13:44:15,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:15,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301772783] [2022-02-15 13:44:15,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:15,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:15,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:15,396 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:15,396 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301772783] [2022-02-15 13:44:15,396 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301772783] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:15,396 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:15,396 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:15,396 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130365588] [2022-02-15 13:44:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:15,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:15,397 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:15,397 INFO L87 Difference]: Start difference. First operand 5768 states and 20109 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:16,453 INFO L93 Difference]: Finished difference Result 6603 states and 22901 transitions. [2022-02-15 13:44:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:44:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:16,469 INFO L225 Difference]: With dead ends: 6603 [2022-02-15 13:44:16,469 INFO L226 Difference]: Without dead ends: 6474 [2022-02-15 13:44:16,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2022-02-15 13:44:16,469 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 363 mSDsluCounter, 2059 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:16,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 1141 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2022-02-15 13:44:16,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5768. [2022-02-15 13:44:16,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4827466620426564) internal successors, (20085), 5767 states have internal predecessors, (20085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2022-02-15 13:44:16,611 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2022-02-15 13:44:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:16,611 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2022-02-15 13:44:16,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2022-02-15 13:44:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:16,621 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:16,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:16,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-02-15 13:44:16,623 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:16,623 INFO L85 PathProgramCache]: Analyzing trace with hash -944184949, now seen corresponding path program 109 times [2022-02-15 13:44:16,623 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:16,623 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455529195] [2022-02-15 13:44:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:16,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:16,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:16,798 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:16,798 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455529195] [2022-02-15 13:44:16,798 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455529195] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:16,798 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:16,798 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:16,799 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64307876] [2022-02-15 13:44:16,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:16,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:16,799 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:16,799 INFO L87 Difference]: Start difference. First operand 5768 states and 20085 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:17,895 INFO L93 Difference]: Finished difference Result 6758 states and 23404 transitions. [2022-02-15 13:44:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:44:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:17,911 INFO L225 Difference]: With dead ends: 6758 [2022-02-15 13:44:17,911 INFO L226 Difference]: Without dead ends: 6669 [2022-02-15 13:44:17,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:44:17,911 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 449 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:17,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1245 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2022-02-15 13:44:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 5768. [2022-02-15 13:44:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5768 states, 5767 states have (on average 3.4827466620426564) internal successors, (20085), 5767 states have internal predecessors, (20085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2022-02-15 13:44:18,006 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2022-02-15 13:44:18,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:18,006 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2022-02-15 13:44:18,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2022-02-15 13:44:18,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:18,015 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:18,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:18,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-02-15 13:44:18,015 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:18,016 INFO L85 PathProgramCache]: Analyzing trace with hash -510155603, now seen corresponding path program 110 times [2022-02-15 13:44:18,016 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:18,016 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867132231] [2022-02-15 13:44:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:18,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:18,255 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:18,255 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867132231] [2022-02-15 13:44:18,255 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867132231] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:18,255 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:18,255 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:18,255 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757396403] [2022-02-15 13:44:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:18,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:18,255 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:18,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:18,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:18,256 INFO L87 Difference]: Start difference. First operand 5768 states and 20085 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:19,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:19,508 INFO L93 Difference]: Finished difference Result 6750 states and 23376 transitions. [2022-02-15 13:44:19,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:44:19,508 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:19,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:19,523 INFO L225 Difference]: With dead ends: 6750 [2022-02-15 13:44:19,523 INFO L226 Difference]: Without dead ends: 6645 [2022-02-15 13:44:19,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:44:19,524 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 429 mSDsluCounter, 2138 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 2528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:19,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1171 Invalid, 2528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2022-02-15 13:44:19,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 5784. [2022-02-15 13:44:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.481411032336158) internal successors, (20133), 5783 states have internal predecessors, (20133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20133 transitions. [2022-02-15 13:44:19,614 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20133 transitions. Word has length 47 [2022-02-15 13:44:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:19,614 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20133 transitions. [2022-02-15 13:44:19,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20133 transitions. [2022-02-15 13:44:19,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:19,623 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:19,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:19,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-02-15 13:44:19,623 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:19,624 INFO L85 PathProgramCache]: Analyzing trace with hash 762778105, now seen corresponding path program 111 times [2022-02-15 13:44:19,624 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:19,624 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436425724] [2022-02-15 13:44:19,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:19,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:19,869 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:19,869 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436425724] [2022-02-15 13:44:19,869 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436425724] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:19,869 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:19,869 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:19,869 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874368320] [2022-02-15 13:44:19,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:19,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:19,869 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:19,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:19,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:19,870 INFO L87 Difference]: Start difference. First operand 5784 states and 20133 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:21,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:21,096 INFO L93 Difference]: Finished difference Result 6659 states and 23097 transitions. [2022-02-15 13:44:21,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:44:21,096 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:21,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:21,110 INFO L225 Difference]: With dead ends: 6659 [2022-02-15 13:44:21,110 INFO L226 Difference]: Without dead ends: 6434 [2022-02-15 13:44:21,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:44:21,111 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 432 mSDsluCounter, 2202 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:21,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 1245 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:21,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2022-02-15 13:44:21,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 5704. [2022-02-15 13:44:21,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4853585832018235) internal successors, (19877), 5703 states have internal predecessors, (19877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19877 transitions. [2022-02-15 13:44:21,195 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19877 transitions. Word has length 47 [2022-02-15 13:44:21,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:21,195 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19877 transitions. [2022-02-15 13:44:21,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19877 transitions. [2022-02-15 13:44:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:21,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:21,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:21,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-02-15 13:44:21,204 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash -680438787, now seen corresponding path program 112 times [2022-02-15 13:44:21,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:21,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051954034] [2022-02-15 13:44:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:21,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:21,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:21,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:21,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051954034] [2022-02-15 13:44:21,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051954034] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:21,414 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:21,414 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:21,414 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417179872] [2022-02-15 13:44:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:21,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:21,414 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:21,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:21,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:21,414 INFO L87 Difference]: Start difference. First operand 5704 states and 19877 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:22,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:22,535 INFO L93 Difference]: Finished difference Result 6699 states and 23157 transitions. [2022-02-15 13:44:22,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:44:22,536 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:22,551 INFO L225 Difference]: With dead ends: 6699 [2022-02-15 13:44:22,552 INFO L226 Difference]: Without dead ends: 6562 [2022-02-15 13:44:22,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:44:22,552 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 376 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:22,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 1293 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2022-02-15 13:44:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5710. [2022-02-15 13:44:22,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.4853739709231037) internal successors, (19898), 5709 states have internal predecessors, (19898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2022-02-15 13:44:22,649 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2022-02-15 13:44:22,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:22,649 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2022-02-15 13:44:22,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2022-02-15 13:44:22,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:22,659 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:22,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:22,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-02-15 13:44:22,659 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:22,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:22,659 INFO L85 PathProgramCache]: Analyzing trace with hash 837257435, now seen corresponding path program 113 times [2022-02-15 13:44:22,659 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:22,659 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510388149] [2022-02-15 13:44:22,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:22,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:22,902 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:22,902 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510388149] [2022-02-15 13:44:22,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510388149] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:22,902 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:22,902 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:22,902 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251566820] [2022-02-15 13:44:22,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:22,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:22,902 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:22,903 INFO L87 Difference]: Start difference. First operand 5710 states and 19898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:24,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:24,100 INFO L93 Difference]: Finished difference Result 6849 states and 23579 transitions. [2022-02-15 13:44:24,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:44:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:24,115 INFO L225 Difference]: With dead ends: 6849 [2022-02-15 13:44:24,115 INFO L226 Difference]: Without dead ends: 6760 [2022-02-15 13:44:24,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:44:24,115 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 437 mSDsluCounter, 2332 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:24,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1304 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6760 states. [2022-02-15 13:44:24,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6760 to 5710. [2022-02-15 13:44:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.4853739709231037) internal successors, (19898), 5709 states have internal predecessors, (19898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:24,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2022-02-15 13:44:24,209 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2022-02-15 13:44:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:24,209 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2022-02-15 13:44:24,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2022-02-15 13:44:24,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:24,218 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:24,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:24,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-02-15 13:44:24,218 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:24,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1271286781, now seen corresponding path program 114 times [2022-02-15 13:44:24,219 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:24,219 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936361945] [2022-02-15 13:44:24,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:24,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:24,506 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:24,506 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936361945] [2022-02-15 13:44:24,506 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936361945] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:24,506 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:24,506 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:24,506 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559307465] [2022-02-15 13:44:24,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:24,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:24,506 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:24,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:24,507 INFO L87 Difference]: Start difference. First operand 5710 states and 19898 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:25,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:25,592 INFO L93 Difference]: Finished difference Result 6742 states and 23252 transitions. [2022-02-15 13:44:25,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:44:25,592 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:25,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:25,608 INFO L225 Difference]: With dead ends: 6742 [2022-02-15 13:44:25,608 INFO L226 Difference]: Without dead ends: 6613 [2022-02-15 13:44:25,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:44:25,609 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 388 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1374 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:25,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1374 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 2814 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:25,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6613 states. [2022-02-15 13:44:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6613 to 5710. [2022-02-15 13:44:25,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5710 states, 5709 states have (on average 3.484322998773866) internal successors, (19892), 5709 states have internal predecessors, (19892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19892 transitions. [2022-02-15 13:44:25,705 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19892 transitions. Word has length 47 [2022-02-15 13:44:25,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:25,705 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19892 transitions. [2022-02-15 13:44:25,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:25,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19892 transitions. [2022-02-15 13:44:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:25,714 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:25,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:25,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-02-15 13:44:25,715 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash -514253669, now seen corresponding path program 115 times [2022-02-15 13:44:25,716 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:25,716 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680128390] [2022-02-15 13:44:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:25,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:25,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:25,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:25,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680128390] [2022-02-15 13:44:25,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680128390] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:25,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:25,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:44:25,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728478735] [2022-02-15 13:44:25,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:25,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:44:25,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:25,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:44:25,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:44:25,906 INFO L87 Difference]: Start difference. First operand 5710 states and 19892 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:27,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:27,886 INFO L93 Difference]: Finished difference Result 8507 states and 29627 transitions. [2022-02-15 13:44:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 13:44:27,887 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:27,906 INFO L225 Difference]: With dead ends: 8507 [2022-02-15 13:44:27,906 INFO L226 Difference]: Without dead ends: 8370 [2022-02-15 13:44:27,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=324, Invalid=2982, Unknown=0, NotChecked=0, Total=3306 [2022-02-15 13:44:27,907 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 536 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 4468 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 4537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:27,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 2006 Invalid, 4537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:44:27,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2022-02-15 13:44:27,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 5756. [2022-02-15 13:44:27,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5755 states have (on average 3.4799304952215464) internal successors, (20027), 5755 states have internal predecessors, (20027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:28,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20027 transitions. [2022-02-15 13:44:28,011 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20027 transitions. Word has length 47 [2022-02-15 13:44:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:28,011 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 20027 transitions. [2022-02-15 13:44:28,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20027 transitions. [2022-02-15 13:44:28,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:28,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:28,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:28,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-02-15 13:44:28,020 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -527785091, now seen corresponding path program 116 times [2022-02-15 13:44:28,020 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:28,020 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394611035] [2022-02-15 13:44:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:28,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:28,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:28,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394611035] [2022-02-15 13:44:28,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394611035] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:28,237 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:28,237 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:28,237 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732733202] [2022-02-15 13:44:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:28,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:28,237 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:28,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:28,237 INFO L87 Difference]: Start difference. First operand 5756 states and 20027 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:30,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:30,942 INFO L93 Difference]: Finished difference Result 9839 states and 34481 transitions. [2022-02-15 13:44:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-02-15 13:44:30,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:30,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:30,986 INFO L225 Difference]: With dead ends: 9839 [2022-02-15 13:44:30,986 INFO L226 Difference]: Without dead ends: 9750 [2022-02-15 13:44:30,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 13:44:30,987 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 702 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 4832 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 4930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:30,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [702 Valid, 2265 Invalid, 4930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4832 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:44:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9750 states. [2022-02-15 13:44:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9750 to 5760. [2022-02-15 13:44:31,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5759 states have (on average 3.4789025872547317) internal successors, (20035), 5759 states have internal predecessors, (20035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 20035 transitions. [2022-02-15 13:44:31,099 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 20035 transitions. Word has length 47 [2022-02-15 13:44:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:31,100 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 20035 transitions. [2022-02-15 13:44:31,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 20035 transitions. [2022-02-15 13:44:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:31,108 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:31,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:31,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-02-15 13:44:31,109 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:31,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1378436999, now seen corresponding path program 117 times [2022-02-15 13:44:31,109 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:31,109 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375380829] [2022-02-15 13:44:31,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:31,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:31,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:31,360 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:31,361 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375380829] [2022-02-15 13:44:31,361 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375380829] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:31,361 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:31,361 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:31,361 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245174987] [2022-02-15 13:44:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:31,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:31,361 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:31,361 INFO L87 Difference]: Start difference. First operand 5760 states and 20035 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:34,306 INFO L93 Difference]: Finished difference Result 10426 states and 36871 transitions. [2022-02-15 13:44:34,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 13:44:34,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:34,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:34,331 INFO L225 Difference]: With dead ends: 10426 [2022-02-15 13:44:34,331 INFO L226 Difference]: Without dead ends: 10319 [2022-02-15 13:44:34,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=419, Invalid=4273, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:44:34,332 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 740 mSDsluCounter, 3890 mSDsCounter, 0 mSdLazyCounter, 5007 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 2494 SdHoareTripleChecker+Invalid, 5100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 5007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:34,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [740 Valid, 2494 Invalid, 5100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 5007 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:44:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2022-02-15 13:44:34,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 5718. [2022-02-15 13:44:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 5717 states have (on average 3.48259576701067) internal successors, (19910), 5717 states have internal predecessors, (19910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:34,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 19910 transitions. [2022-02-15 13:44:34,453 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 19910 transitions. Word has length 47 [2022-02-15 13:44:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:34,454 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 19910 transitions. [2022-02-15 13:44:34,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 19910 transitions. [2022-02-15 13:44:34,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:34,463 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:34,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:34,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-02-15 13:44:34,463 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:34,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1477803139, now seen corresponding path program 118 times [2022-02-15 13:44:34,463 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:34,463 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675339530] [2022-02-15 13:44:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:34,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:34,723 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:34,723 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675339530] [2022-02-15 13:44:34,723 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675339530] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:34,723 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:34,723 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:34,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038764114] [2022-02-15 13:44:34,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:34,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:34,723 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:34,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:34,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:34,723 INFO L87 Difference]: Start difference. First operand 5718 states and 19910 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:36,360 INFO L93 Difference]: Finished difference Result 6910 states and 23771 transitions. [2022-02-15 13:44:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:44:36,361 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:36,376 INFO L225 Difference]: With dead ends: 6910 [2022-02-15 13:44:36,376 INFO L226 Difference]: Without dead ends: 6821 [2022-02-15 13:44:36,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:44:36,377 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 457 mSDsluCounter, 2549 mSDsCounter, 0 mSdLazyCounter, 2935 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 2969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:36,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1383 Invalid, 2969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2935 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:44:36,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2022-02-15 13:44:36,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5720. [2022-02-15 13:44:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.4826018534708867) internal successors, (19917), 5719 states have internal predecessors, (19917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2022-02-15 13:44:36,473 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2022-02-15 13:44:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2022-02-15 13:44:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:36,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2022-02-15 13:44:36,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:36,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:36,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:36,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-02-15 13:44:36,482 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:36,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1801464963, now seen corresponding path program 119 times [2022-02-15 13:44:36,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:36,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901737719] [2022-02-15 13:44:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:36,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:36,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:36,739 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:36,739 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901737719] [2022-02-15 13:44:36,739 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901737719] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:36,739 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:36,739 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:36,739 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956016047] [2022-02-15 13:44:36,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:36,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:36,739 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:36,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:36,739 INFO L87 Difference]: Start difference. First operand 5720 states and 19917 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:38,039 INFO L93 Difference]: Finished difference Result 6902 states and 23743 transitions. [2022-02-15 13:44:38,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:44:38,040 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:38,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:38,054 INFO L225 Difference]: With dead ends: 6902 [2022-02-15 13:44:38,054 INFO L226 Difference]: Without dead ends: 6797 [2022-02-15 13:44:38,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:44:38,055 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 438 mSDsluCounter, 2590 mSDsCounter, 0 mSdLazyCounter, 2909 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:38,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1382 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2909 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:44:38,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2022-02-15 13:44:38,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5720. [2022-02-15 13:44:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.482252141982864) internal successors, (19915), 5719 states have internal predecessors, (19915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:38,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19915 transitions. [2022-02-15 13:44:38,147 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19915 transitions. Word has length 47 [2022-02-15 13:44:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:38,147 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19915 transitions. [2022-02-15 13:44:38,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:38,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19915 transitions. [2022-02-15 13:44:38,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:38,156 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:38,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:38,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-02-15 13:44:38,156 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 868735899, now seen corresponding path program 120 times [2022-02-15 13:44:38,156 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:38,157 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612945939] [2022-02-15 13:44:38,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:38,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:38,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:38,335 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:38,335 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612945939] [2022-02-15 13:44:38,335 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612945939] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:38,335 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:38,335 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:38,335 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40540215] [2022-02-15 13:44:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:38,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:38,335 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:38,336 INFO L87 Difference]: Start difference. First operand 5720 states and 19915 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:39,935 INFO L93 Difference]: Finished difference Result 8513 states and 29532 transitions. [2022-02-15 13:44:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-02-15 13:44:39,936 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:39,955 INFO L225 Difference]: With dead ends: 8513 [2022-02-15 13:44:39,955 INFO L226 Difference]: Without dead ends: 8424 [2022-02-15 13:44:39,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 13:44:39,956 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 539 mSDsluCounter, 3906 mSDsCounter, 0 mSdLazyCounter, 4479 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2390 SdHoareTripleChecker+Invalid, 4531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 4479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:39,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2390 Invalid, 4531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 4479 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:44:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2022-02-15 13:44:40,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 5824. [2022-02-15 13:44:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5823 states have (on average 3.477760604499399) internal successors, (20251), 5823 states have internal predecessors, (20251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20251 transitions. [2022-02-15 13:44:40,088 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20251 transitions. Word has length 47 [2022-02-15 13:44:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:40,089 INFO L470 AbstractCegarLoop]: Abstraction has 5824 states and 20251 transitions. [2022-02-15 13:44:40,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20251 transitions. [2022-02-15 13:44:40,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:40,098 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:40,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:40,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-02-15 13:44:40,098 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:40,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:40,098 INFO L85 PathProgramCache]: Analyzing trace with hash 93618297, now seen corresponding path program 121 times [2022-02-15 13:44:40,098 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:40,098 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347796617] [2022-02-15 13:44:40,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:40,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:40,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:40,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347796617] [2022-02-15 13:44:40,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347796617] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:40,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:40,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:40,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28742773] [2022-02-15 13:44:40,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:40,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:40,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:40,263 INFO L87 Difference]: Start difference. First operand 5824 states and 20251 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:41,871 INFO L93 Difference]: Finished difference Result 7385 states and 25458 transitions. [2022-02-15 13:44:41,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:44:41,872 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:41,888 INFO L225 Difference]: With dead ends: 7385 [2022-02-15 13:44:41,888 INFO L226 Difference]: Without dead ends: 7290 [2022-02-15 13:44:41,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:44:41,889 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 454 mSDsluCounter, 3144 mSDsCounter, 0 mSdLazyCounter, 3589 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:41,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [454 Valid, 1740 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3589 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:44:41,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2022-02-15 13:44:41,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 5804. [2022-02-15 13:44:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 3.4821643977253145) internal successors, (20207), 5803 states have internal predecessors, (20207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:41,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20207 transitions. [2022-02-15 13:44:41,989 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20207 transitions. Word has length 47 [2022-02-15 13:44:41,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:41,989 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 20207 transitions. [2022-02-15 13:44:41,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:41,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20207 transitions. [2022-02-15 13:44:41,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:41,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:41,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:41,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-02-15 13:44:41,998 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:41,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:41,999 INFO L85 PathProgramCache]: Analyzing trace with hash 392509975, now seen corresponding path program 122 times [2022-02-15 13:44:41,999 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:41,999 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38308032] [2022-02-15 13:44:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:41,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:42,262 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:42,262 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38308032] [2022-02-15 13:44:42,262 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38308032] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:42,262 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:42,262 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:42,262 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483828] [2022-02-15 13:44:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:42,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:42,263 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:42,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:42,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:42,263 INFO L87 Difference]: Start difference. First operand 5804 states and 20207 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:43,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:43,655 INFO L93 Difference]: Finished difference Result 6867 states and 23666 transitions. [2022-02-15 13:44:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:44:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:43,670 INFO L225 Difference]: With dead ends: 6867 [2022-02-15 13:44:43,671 INFO L226 Difference]: Without dead ends: 6770 [2022-02-15 13:44:43,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:44:43,671 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 390 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:43,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1343 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:44:43,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2022-02-15 13:44:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 5818. [2022-02-15 13:44:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5818 states, 5817 states have (on average 3.4784253051401066) internal successors, (20234), 5817 states have internal predecessors, (20234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:43,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 20234 transitions. [2022-02-15 13:44:43,762 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 20234 transitions. Word has length 47 [2022-02-15 13:44:43,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:43,763 INFO L470 AbstractCegarLoop]: Abstraction has 5818 states and 20234 transitions. [2022-02-15 13:44:43,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:43,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 20234 transitions. [2022-02-15 13:44:43,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:43,772 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:43,772 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:43,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-02-15 13:44:43,772 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:43,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1332910535, now seen corresponding path program 123 times [2022-02-15 13:44:43,772 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:43,772 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849808283] [2022-02-15 13:44:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:43,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:43,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:43,990 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:43,990 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849808283] [2022-02-15 13:44:43,991 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849808283] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:43,991 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:43,991 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:43,991 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359842264] [2022-02-15 13:44:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:43,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:43,991 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:43,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:43,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:43,991 INFO L87 Difference]: Start difference. First operand 5818 states and 20234 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:45,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:45,364 INFO L93 Difference]: Finished difference Result 6843 states and 23576 transitions. [2022-02-15 13:44:45,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:44:45,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:45,379 INFO L225 Difference]: With dead ends: 6843 [2022-02-15 13:44:45,379 INFO L226 Difference]: Without dead ends: 6738 [2022-02-15 13:44:45,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:44:45,379 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 383 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 2831 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:45,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 1371 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2831 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:44:45,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6738 states. [2022-02-15 13:44:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6738 to 5804. [2022-02-15 13:44:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5804 states, 5803 states have (on average 3.481130449767362) internal successors, (20201), 5803 states have internal predecessors, (20201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20201 transitions. [2022-02-15 13:44:45,473 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20201 transitions. Word has length 47 [2022-02-15 13:44:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:45,473 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 20201 transitions. [2022-02-15 13:44:45,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:45,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20201 transitions. [2022-02-15 13:44:45,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:45,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:45,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:45,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-02-15 13:44:45,482 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:45,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:45,482 INFO L85 PathProgramCache]: Analyzing trace with hash 986657209, now seen corresponding path program 124 times [2022-02-15 13:44:45,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:45,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158692469] [2022-02-15 13:44:45,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:45,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:45,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:45,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:45,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158692469] [2022-02-15 13:44:45,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158692469] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:45,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:45,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:45,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884207277] [2022-02-15 13:44:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:45,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:45,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:45,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:45,733 INFO L87 Difference]: Start difference. First operand 5804 states and 20201 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:47,094 INFO L93 Difference]: Finished difference Result 6770 states and 23436 transitions. [2022-02-15 13:44:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:44:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:47,109 INFO L225 Difference]: With dead ends: 6770 [2022-02-15 13:44:47,109 INFO L226 Difference]: Without dead ends: 6681 [2022-02-15 13:44:47,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:44:47,110 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 502 mSDsluCounter, 2351 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:47,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 1288 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 2757 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2022-02-15 13:44:47,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 5808. [2022-02-15 13:44:47,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5807 states have (on average 3.481143447563286) internal successors, (20215), 5807 states have internal predecessors, (20215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20215 transitions. [2022-02-15 13:44:47,203 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20215 transitions. Word has length 47 [2022-02-15 13:44:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:47,203 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 20215 transitions. [2022-02-15 13:44:47,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:47,203 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20215 transitions. [2022-02-15 13:44:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:47,212 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:47,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:47,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-02-15 13:44:47,212 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash 662995385, now seen corresponding path program 125 times [2022-02-15 13:44:47,212 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:47,212 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296531045] [2022-02-15 13:44:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:47,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:47,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:47,470 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:47,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296531045] [2022-02-15 13:44:47,471 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296531045] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:47,471 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:47,471 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:47,471 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225734433] [2022-02-15 13:44:47,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:47,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:47,471 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:47,471 INFO L87 Difference]: Start difference. First operand 5808 states and 20215 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:48,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:48,731 INFO L93 Difference]: Finished difference Result 6762 states and 23408 transitions. [2022-02-15 13:44:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:44:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:48,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:48,747 INFO L225 Difference]: With dead ends: 6762 [2022-02-15 13:44:48,747 INFO L226 Difference]: Without dead ends: 6657 [2022-02-15 13:44:48,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:44:48,748 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 485 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 2686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:48,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1206 Invalid, 2686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:48,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2022-02-15 13:44:48,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 5824. [2022-02-15 13:44:48,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5824 states, 5823 states have (on average 3.47982139790486) internal successors, (20263), 5823 states have internal predecessors, (20263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:48,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20263 transitions. [2022-02-15 13:44:48,842 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20263 transitions. Word has length 47 [2022-02-15 13:44:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:48,842 INFO L470 AbstractCegarLoop]: Abstraction has 5824 states and 20263 transitions. [2022-02-15 13:44:48,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20263 transitions. [2022-02-15 13:44:48,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:48,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:48,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:48,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-02-15 13:44:48,852 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:48,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:48,852 INFO L85 PathProgramCache]: Analyzing trace with hash 719106839, now seen corresponding path program 126 times [2022-02-15 13:44:48,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:48,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653722441] [2022-02-15 13:44:48,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:48,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:49,082 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:49,082 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653722441] [2022-02-15 13:44:49,082 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653722441] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:49,082 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:49,082 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:49,082 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614957015] [2022-02-15 13:44:49,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:49,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:49,083 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:49,083 INFO L87 Difference]: Start difference. First operand 5824 states and 20263 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:50,315 INFO L93 Difference]: Finished difference Result 6731 states and 23345 transitions. [2022-02-15 13:44:50,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:44:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:50,330 INFO L225 Difference]: With dead ends: 6731 [2022-02-15 13:44:50,330 INFO L226 Difference]: Without dead ends: 6570 [2022-02-15 13:44:50,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:44:50,331 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 472 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 2701 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:50,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1231 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 2701 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2022-02-15 13:44:50,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 5808. [2022-02-15 13:44:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5808 states, 5807 states have (on average 3.480454623729981) internal successors, (20211), 5807 states have internal predecessors, (20211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20211 transitions. [2022-02-15 13:44:50,425 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20211 transitions. Word has length 47 [2022-02-15 13:44:50,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:50,425 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 20211 transitions. [2022-02-15 13:44:50,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:50,426 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20211 transitions. [2022-02-15 13:44:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:50,435 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:50,435 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:50,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-02-15 13:44:50,435 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash 869165467, now seen corresponding path program 127 times [2022-02-15 13:44:50,435 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:50,435 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548978384] [2022-02-15 13:44:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:50,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:50,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:50,692 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:50,692 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548978384] [2022-02-15 13:44:50,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548978384] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:50,692 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:50,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:50,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618490674] [2022-02-15 13:44:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:50,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:50,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:50,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:50,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:50,693 INFO L87 Difference]: Start difference. First operand 5808 states and 20211 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:51,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:51,819 INFO L93 Difference]: Finished difference Result 6910 states and 23799 transitions. [2022-02-15 13:44:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:44:51,819 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:51,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:51,834 INFO L225 Difference]: With dead ends: 6910 [2022-02-15 13:44:51,834 INFO L226 Difference]: Without dead ends: 6821 [2022-02-15 13:44:51,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:44:51,834 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 487 mSDsluCounter, 2397 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 2845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:51,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1293 Invalid, 2845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:44:51,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2022-02-15 13:44:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5810. [2022-02-15 13:44:51,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5809 states have (on average 3.480461353072818) internal successors, (20218), 5809 states have internal predecessors, (20218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20218 transitions. [2022-02-15 13:44:51,926 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20218 transitions. Word has length 47 [2022-02-15 13:44:51,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:51,926 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 20218 transitions. [2022-02-15 13:44:51,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:51,927 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20218 transitions. [2022-02-15 13:44:51,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:51,936 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:51,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:51,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-02-15 13:44:51,939 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:51,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:51,939 INFO L85 PathProgramCache]: Analyzing trace with hash 545503643, now seen corresponding path program 128 times [2022-02-15 13:44:51,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:51,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696678403] [2022-02-15 13:44:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:51,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:52,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:52,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696678403] [2022-02-15 13:44:52,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696678403] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:52,236 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:52,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:52,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643263174] [2022-02-15 13:44:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:52,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:52,236 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:52,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:52,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:52,236 INFO L87 Difference]: Start difference. First operand 5810 states and 20218 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:53,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:53,502 INFO L93 Difference]: Finished difference Result 6902 states and 23771 transitions. [2022-02-15 13:44:53,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:44:53,502 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:53,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:53,518 INFO L225 Difference]: With dead ends: 6902 [2022-02-15 13:44:53,518 INFO L226 Difference]: Without dead ends: 6797 [2022-02-15 13:44:53,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:44:53,519 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 476 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2568 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:53,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1165 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2022-02-15 13:44:53,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5810. [2022-02-15 13:44:53,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5810 states, 5809 states have (on average 3.4801170597348943) internal successors, (20216), 5809 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20216 transitions. [2022-02-15 13:44:53,657 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20216 transitions. Word has length 47 [2022-02-15 13:44:53,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:53,657 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 20216 transitions. [2022-02-15 13:44:53,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:53,658 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20216 transitions. [2022-02-15 13:44:53,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:53,666 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:53,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:53,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-02-15 13:44:53,667 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:53,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:53,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1079262791, now seen corresponding path program 129 times [2022-02-15 13:44:53,667 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:53,667 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56192667] [2022-02-15 13:44:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:53,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:53,833 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:53,833 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56192667] [2022-02-15 13:44:53,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56192667] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:53,833 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:53,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:53,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702119310] [2022-02-15 13:44:53,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:53,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:53,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:53,834 INFO L87 Difference]: Start difference. First operand 5810 states and 20216 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:55,686 INFO L93 Difference]: Finished difference Result 7949 states and 27657 transitions. [2022-02-15 13:44:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 13:44:55,687 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:55,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:55,705 INFO L225 Difference]: With dead ends: 7949 [2022-02-15 13:44:55,705 INFO L226 Difference]: Without dead ends: 7844 [2022-02-15 13:44:55,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=310, Invalid=3112, Unknown=0, NotChecked=0, Total=3422 [2022-02-15 13:44:55,706 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 586 mSDsluCounter, 3438 mSDsCounter, 0 mSdLazyCounter, 3954 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2141 SdHoareTripleChecker+Invalid, 4012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:55,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [586 Valid, 2141 Invalid, 4012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3954 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:44:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2022-02-15 13:44:55,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 5756. [2022-02-15 13:44:55,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5756 states, 5755 states have (on average 3.4802780191138143) internal successors, (20029), 5755 states have internal predecessors, (20029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:55,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20029 transitions. [2022-02-15 13:44:55,803 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20029 transitions. Word has length 47 [2022-02-15 13:44:55,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:55,803 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 20029 transitions. [2022-02-15 13:44:55,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:55,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20029 transitions. [2022-02-15 13:44:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:55,811 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:55,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:55,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-02-15 13:44:55,812 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:55,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1854380393, now seen corresponding path program 130 times [2022-02-15 13:44:55,812 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:55,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231161436] [2022-02-15 13:44:55,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:55,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:56,081 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:56,081 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231161436] [2022-02-15 13:44:56,081 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231161436] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:56,081 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:56,081 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:56,081 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171634143] [2022-02-15 13:44:56,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:56,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:56,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:56,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:56,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:56,082 INFO L87 Difference]: Start difference. First operand 5756 states and 20029 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:57,930 INFO L93 Difference]: Finished difference Result 7705 states and 26697 transitions. [2022-02-15 13:44:57,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:44:57,930 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:57,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:57,948 INFO L225 Difference]: With dead ends: 7705 [2022-02-15 13:44:57,949 INFO L226 Difference]: Without dead ends: 7610 [2022-02-15 13:44:57,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 13:44:57,949 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 529 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 3544 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 3586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:57,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1850 Invalid, 3586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3544 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:44:57,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2022-02-15 13:44:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 5724. [2022-02-15 13:44:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 5723 states have (on average 3.482264546566486) internal successors, (19929), 5723 states have internal predecessors, (19929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:58,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19929 transitions. [2022-02-15 13:44:58,045 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19929 transitions. Word has length 47 [2022-02-15 13:44:58,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:58,045 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 19929 transitions. [2022-02-15 13:44:58,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:58,045 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19929 transitions. [2022-02-15 13:44:58,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:58,054 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:58,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:58,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-02-15 13:44:58,054 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1555488715, now seen corresponding path program 131 times [2022-02-15 13:44:58,055 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:58,055 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950835144] [2022-02-15 13:44:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:58,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:58,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:58,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:58,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950835144] [2022-02-15 13:44:58,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950835144] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:58,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:58,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:58,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316360611] [2022-02-15 13:44:58,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:58,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:58,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:58,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:58,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:58,250 INFO L87 Difference]: Start difference. First operand 5724 states and 19929 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:59,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:44:59,454 INFO L93 Difference]: Finished difference Result 6814 states and 23479 transitions. [2022-02-15 13:44:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:44:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:44:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:44:59,469 INFO L225 Difference]: With dead ends: 6814 [2022-02-15 13:44:59,469 INFO L226 Difference]: Without dead ends: 6717 [2022-02-15 13:44:59,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:44:59,470 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 452 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 2713 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:44:59,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1220 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:44:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-02-15 13:44:59,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5732. [2022-02-15 13:44:59,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5732 states, 5731 states have (on average 3.480544407607747) internal successors, (19947), 5731 states have internal predecessors, (19947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:59,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19947 transitions. [2022-02-15 13:44:59,560 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19947 transitions. Word has length 47 [2022-02-15 13:44:59,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:44:59,561 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 19947 transitions. [2022-02-15 13:44:59,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:44:59,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19947 transitions. [2022-02-15 13:44:59,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:44:59,570 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:44:59,570 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:44:59,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-02-15 13:44:59,570 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:44:59,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:44:59,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1014058071, now seen corresponding path program 132 times [2022-02-15 13:44:59,571 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:44:59,571 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270066231] [2022-02-15 13:44:59,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:44:59,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:44:59,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:44:59,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:44:59,816 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:44:59,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270066231] [2022-02-15 13:44:59,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270066231] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:44:59,817 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:44:59,817 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:44:59,817 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594540084] [2022-02-15 13:44:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:44:59,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:44:59,817 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:44:59,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:44:59,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:44:59,817 INFO L87 Difference]: Start difference. First operand 5732 states and 19947 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:01,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:01,058 INFO L93 Difference]: Finished difference Result 6790 states and 23389 transitions. [2022-02-15 13:45:01,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:45:01,058 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:01,073 INFO L225 Difference]: With dead ends: 6790 [2022-02-15 13:45:01,073 INFO L226 Difference]: Without dead ends: 6691 [2022-02-15 13:45:01,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2022-02-15 13:45:01,074 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 412 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 2749 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 2776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:01,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1253 Invalid, 2776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2749 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:45:01,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2022-02-15 13:45:01,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 5724. [2022-02-15 13:45:01,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5724 states, 5723 states have (on average 3.481915079503757) internal successors, (19927), 5723 states have internal predecessors, (19927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19927 transitions. [2022-02-15 13:45:01,167 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19927 transitions. Word has length 47 [2022-02-15 13:45:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:01,168 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 19927 transitions. [2022-02-15 13:45:01,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:01,168 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19927 transitions. [2022-02-15 13:45:01,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:01,176 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:01,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:01,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-02-15 13:45:01,177 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:01,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2089802635, now seen corresponding path program 133 times [2022-02-15 13:45:01,177 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:01,177 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595642659] [2022-02-15 13:45:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:01,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:01,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:01,419 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:01,419 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595642659] [2022-02-15 13:45:01,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595642659] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:01,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:01,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:01,419 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750489574] [2022-02-15 13:45:01,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:01,419 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:01,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:01,420 INFO L87 Difference]: Start difference. First operand 5724 states and 19927 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:02,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:02,338 INFO L93 Difference]: Finished difference Result 6545 states and 22710 transitions. [2022-02-15 13:45:02,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-02-15 13:45:02,339 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:02,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:02,353 INFO L225 Difference]: With dead ends: 6545 [2022-02-15 13:45:02,353 INFO L226 Difference]: Without dead ends: 6400 [2022-02-15 13:45:02,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=1707, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:45:02,354 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 410 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 2646 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:02,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1213 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:45:02,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2022-02-15 13:45:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 5736. [2022-02-15 13:45:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5736 states, 5735 states have (on average 3.479860505666957) internal successors, (19957), 5735 states have internal predecessors, (19957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:02,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 19957 transitions. [2022-02-15 13:45:02,443 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 19957 transitions. Word has length 47 [2022-02-15 13:45:02,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:02,443 INFO L470 AbstractCegarLoop]: Abstraction has 5736 states and 19957 transitions. [2022-02-15 13:45:02,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 19957 transitions. [2022-02-15 13:45:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:02,488 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:02,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:02,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-02-15 13:45:02,489 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:02,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 146349929, now seen corresponding path program 134 times [2022-02-15 13:45:02,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:02,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587214766] [2022-02-15 13:45:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:02,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:02,675 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:02,675 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587214766] [2022-02-15 13:45:02,675 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587214766] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:02,675 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:02,675 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:02,675 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470103971] [2022-02-15 13:45:02,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:02,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:02,675 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:02,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:02,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:02,676 INFO L87 Difference]: Start difference. First operand 5736 states and 19957 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:03,942 INFO L93 Difference]: Finished difference Result 6665 states and 23013 transitions. [2022-02-15 13:45:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:45:03,942 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:03,958 INFO L225 Difference]: With dead ends: 6665 [2022-02-15 13:45:03,958 INFO L226 Difference]: Without dead ends: 6568 [2022-02-15 13:45:03,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2022-02-15 13:45:03,958 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 407 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 2681 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:03,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 1235 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2681 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:45:03,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2022-02-15 13:45:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 5742. [2022-02-15 13:45:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5741 states have (on average 3.4788364396446614) internal successors, (19972), 5741 states have internal predecessors, (19972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 19972 transitions. [2022-02-15 13:45:04,053 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 19972 transitions. Word has length 47 [2022-02-15 13:45:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:04,053 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 19972 transitions. [2022-02-15 13:45:04,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 19972 transitions. [2022-02-15 13:45:04,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:04,062 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:04,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:04,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-02-15 13:45:04,062 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1579070581, now seen corresponding path program 135 times [2022-02-15 13:45:04,062 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:04,062 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074369983] [2022-02-15 13:45:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:04,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:04,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:04,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074369983] [2022-02-15 13:45:04,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074369983] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:04,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:04,323 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:04,323 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151313339] [2022-02-15 13:45:04,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:04,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:04,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:04,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:04,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:04,324 INFO L87 Difference]: Start difference. First operand 5742 states and 19972 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:05,673 INFO L93 Difference]: Finished difference Result 6566 states and 22708 transitions. [2022-02-15 13:45:05,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-02-15 13:45:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:05,688 INFO L225 Difference]: With dead ends: 6566 [2022-02-15 13:45:05,688 INFO L226 Difference]: Without dead ends: 6437 [2022-02-15 13:45:05,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:45:05,689 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 361 mSDsluCounter, 2344 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:05,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1251 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:45:05,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2022-02-15 13:45:05,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 5704. [2022-02-15 13:45:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 3.4864106610555847) internal successors, (19883), 5703 states have internal predecessors, (19883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:05,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19883 transitions. [2022-02-15 13:45:05,779 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19883 transitions. Word has length 47 [2022-02-15 13:45:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:05,779 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19883 transitions. [2022-02-15 13:45:05,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19883 transitions. [2022-02-15 13:45:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:05,788 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:05,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:05,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-02-15 13:45:05,789 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:05,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash 252406523, now seen corresponding path program 136 times [2022-02-15 13:45:05,789 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:05,789 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065838094] [2022-02-15 13:45:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:05,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:06,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:06,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065838094] [2022-02-15 13:45:06,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065838094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:06,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:06,059 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:45:06,059 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898417811] [2022-02-15 13:45:06,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:06,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:45:06,059 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:06,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:45:06,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:45:06,060 INFO L87 Difference]: Start difference. First operand 5704 states and 19883 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:07,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:07,091 INFO L93 Difference]: Finished difference Result 6483 states and 22479 transitions. [2022-02-15 13:45:07,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:45:07,092 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:07,106 INFO L225 Difference]: With dead ends: 6483 [2022-02-15 13:45:07,107 INFO L226 Difference]: Without dead ends: 6346 [2022-02-15 13:45:07,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2022-02-15 13:45:07,107 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 335 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 2185 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 2206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:07,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 1062 Invalid, 2206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:45:07,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-02-15 13:45:07,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5720. [2022-02-15 13:45:07,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5720 states, 5719 states have (on average 3.485049833887043) internal successors, (19931), 5719 states have internal predecessors, (19931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:07,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19931 transitions. [2022-02-15 13:45:07,277 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19931 transitions. Word has length 47 [2022-02-15 13:45:07,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:07,279 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19931 transitions. [2022-02-15 13:45:07,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:07,279 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19931 transitions. [2022-02-15 13:45:07,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:07,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:07,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:07,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-02-15 13:45:07,288 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1770102745, now seen corresponding path program 137 times [2022-02-15 13:45:07,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:07,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158395163] [2022-02-15 13:45:07,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:07,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:07,448 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:07,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158395163] [2022-02-15 13:45:07,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158395163] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:07,448 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:07,448 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:07,449 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104493639] [2022-02-15 13:45:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:07,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:07,449 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:07,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:07,449 INFO L87 Difference]: Start difference. First operand 5720 states and 19931 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:08,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:08,447 INFO L93 Difference]: Finished difference Result 6542 states and 22638 transitions. [2022-02-15 13:45:08,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-02-15 13:45:08,448 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:08,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:08,462 INFO L225 Difference]: With dead ends: 6542 [2022-02-15 13:45:08,462 INFO L226 Difference]: Without dead ends: 6453 [2022-02-15 13:45:08,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:45:08,463 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 401 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 2383 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:08,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 1112 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:45:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2022-02-15 13:45:08,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 5784. [2022-02-15 13:45:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.483831921148193) internal successors, (20147), 5783 states have internal predecessors, (20147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:08,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20147 transitions. [2022-02-15 13:45:08,553 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20147 transitions. Word has length 47 [2022-02-15 13:45:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:08,553 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20147 transitions. [2022-02-15 13:45:08,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20147 transitions. [2022-02-15 13:45:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:08,562 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:08,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:08,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-02-15 13:45:08,562 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:08,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:08,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2090835205, now seen corresponding path program 138 times [2022-02-15 13:45:08,566 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:08,566 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253953196] [2022-02-15 13:45:08,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:08,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:08,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:08,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:08,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253953196] [2022-02-15 13:45:08,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253953196] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:08,828 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:08,828 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:08,828 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611279463] [2022-02-15 13:45:08,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:08,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:08,828 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:08,828 INFO L87 Difference]: Start difference. First operand 5784 states and 20147 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:09,993 INFO L93 Difference]: Finished difference Result 6435 states and 22311 transitions. [2022-02-15 13:45:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-02-15 13:45:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:10,007 INFO L225 Difference]: With dead ends: 6435 [2022-02-15 13:45:10,008 INFO L226 Difference]: Without dead ends: 6306 [2022-02-15 13:45:10,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:45:10,008 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 337 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 2370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:10,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 1094 Invalid, 2370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:45:10,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2022-02-15 13:45:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5784. [2022-02-15 13:45:10,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4796818260418467) internal successors, (20123), 5783 states have internal predecessors, (20123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:10,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2022-02-15 13:45:10,103 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2022-02-15 13:45:10,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:10,103 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2022-02-15 13:45:10,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:10,103 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2022-02-15 13:45:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:10,112 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:10,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:10,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-02-15 13:45:10,112 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:10,112 INFO L85 PathProgramCache]: Analyzing trace with hash -529401719, now seen corresponding path program 139 times [2022-02-15 13:45:10,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:10,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572781522] [2022-02-15 13:45:10,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:10,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:10,351 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:10,351 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572781522] [2022-02-15 13:45:10,351 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572781522] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:10,351 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:10,351 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:10,351 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398684907] [2022-02-15 13:45:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:10,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:10,351 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:10,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:10,352 INFO L87 Difference]: Start difference. First operand 5784 states and 20123 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:11,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:11,395 INFO L93 Difference]: Finished difference Result 6494 states and 22478 transitions. [2022-02-15 13:45:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-02-15 13:45:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:11,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:11,409 INFO L225 Difference]: With dead ends: 6494 [2022-02-15 13:45:11,409 INFO L226 Difference]: Without dead ends: 6405 [2022-02-15 13:45:11,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2022-02-15 13:45:11,410 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 410 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:11,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 1163 Invalid, 2497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:45:11,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2022-02-15 13:45:11,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5784. [2022-02-15 13:45:11,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5784 states, 5783 states have (on average 3.4796818260418467) internal successors, (20123), 5783 states have internal predecessors, (20123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:11,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2022-02-15 13:45:11,528 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2022-02-15 13:45:11,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:11,528 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2022-02-15 13:45:11,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:11,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2022-02-15 13:45:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:11,537 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:11,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:11,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-02-15 13:45:11,538 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:11,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash -95372373, now seen corresponding path program 140 times [2022-02-15 13:45:11,538 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:11,538 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426735527] [2022-02-15 13:45:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:11,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:11,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:11,786 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:11,786 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426735527] [2022-02-15 13:45:11,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426735527] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:11,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:11,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:11,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494589256] [2022-02-15 13:45:11,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:11,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:11,787 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:11,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:11,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:11,787 INFO L87 Difference]: Start difference. First operand 5784 states and 20123 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:12,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:12,584 INFO L93 Difference]: Finished difference Result 6486 states and 22450 transitions. [2022-02-15 13:45:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-02-15 13:45:12,585 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:12,598 INFO L225 Difference]: With dead ends: 6486 [2022-02-15 13:45:12,599 INFO L226 Difference]: Without dead ends: 6381 [2022-02-15 13:45:12,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2022-02-15 13:45:12,599 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 390 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:12,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1089 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-02-15 13:45:12,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2022-02-15 13:45:12,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5800. [2022-02-15 13:45:12,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5800 states, 5799 states have (on average 3.4783583376444214) internal successors, (20171), 5799 states have internal predecessors, (20171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:12,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 20171 transitions. [2022-02-15 13:45:12,687 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 20171 transitions. Word has length 47 [2022-02-15 13:45:12,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:12,687 INFO L470 AbstractCegarLoop]: Abstraction has 5800 states and 20171 transitions. [2022-02-15 13:45:12,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 20171 transitions. [2022-02-15 13:45:12,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:12,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:12,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:12,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-02-15 13:45:12,697 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:12,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:12,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1177561335, now seen corresponding path program 141 times [2022-02-15 13:45:12,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:12,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549459959] [2022-02-15 13:45:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:12,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:12,932 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:12,932 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549459959] [2022-02-15 13:45:12,932 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549459959] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:12,932 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:12,932 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:12,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458340462] [2022-02-15 13:45:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:12,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:12,932 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:12,933 INFO L87 Difference]: Start difference. First operand 5800 states and 20171 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:13,874 INFO L93 Difference]: Finished difference Result 6379 states and 22123 transitions. [2022-02-15 13:45:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-02-15 13:45:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:13,888 INFO L225 Difference]: With dead ends: 6379 [2022-02-15 13:45:13,889 INFO L226 Difference]: Without dead ends: 6110 [2022-02-15 13:45:13,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2022-02-15 13:45:13,889 INFO L933 BasicCegarLoop]: 109 mSDtfsCounter, 329 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:13,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 1095 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-02-15 13:45:13,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2022-02-15 13:45:13,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5676. [2022-02-15 13:45:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5676 states, 5675 states have (on average 3.490925110132159) internal successors, (19811), 5675 states have internal predecessors, (19811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:13,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2022-02-15 13:45:13,978 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2022-02-15 13:45:13,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:13,978 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2022-02-15 13:45:13,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:13,978 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2022-02-15 13:45:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:13,987 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:13,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:13,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-02-15 13:45:13,987 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1450016701, now seen corresponding path program 142 times [2022-02-15 13:45:13,987 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:13,987 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634797884] [2022-02-15 13:45:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:14,142 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:14,142 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634797884] [2022-02-15 13:45:14,142 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634797884] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:14,142 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:14,142 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:14,143 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848941222] [2022-02-15 13:45:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:14,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:14,143 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:14,143 INFO L87 Difference]: Start difference. First operand 5676 states and 19811 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:16,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:16,233 INFO L93 Difference]: Finished difference Result 9641 states and 33896 transitions. [2022-02-15 13:45:16,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 13:45:16,233 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:16,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:16,254 INFO L225 Difference]: With dead ends: 9641 [2022-02-15 13:45:16,255 INFO L226 Difference]: Without dead ends: 9414 [2022-02-15 13:45:16,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=474, Invalid=4496, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 13:45:16,255 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 722 mSDsluCounter, 3995 mSDsCounter, 0 mSdLazyCounter, 4981 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2689 SdHoareTripleChecker+Invalid, 5063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:16,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 2689 Invalid, 5063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4981 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:45:16,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9414 states. [2022-02-15 13:45:16,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9414 to 5851. [2022-02-15 13:45:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 5850 states have (on average 3.4905982905982906) internal successors, (20420), 5850 states have internal predecessors, (20420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:16,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 20420 transitions. [2022-02-15 13:45:16,365 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 20420 transitions. Word has length 47 [2022-02-15 13:45:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:16,365 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 20420 transitions. [2022-02-15 13:45:16,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 20420 transitions. [2022-02-15 13:45:16,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:16,374 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:16,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:16,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-02-15 13:45:16,375 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:16,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:16,375 INFO L85 PathProgramCache]: Analyzing trace with hash 99268097, now seen corresponding path program 143 times [2022-02-15 13:45:16,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:16,375 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589454978] [2022-02-15 13:45:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:16,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:16,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:16,576 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:16,576 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589454978] [2022-02-15 13:45:16,576 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589454978] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:16,576 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:16,576 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:16,576 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117747384] [2022-02-15 13:45:16,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:16,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:16,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:16,577 INFO L87 Difference]: Start difference. First operand 5851 states and 20420 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:19,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:19,131 INFO L93 Difference]: Finished difference Result 11528 states and 40542 transitions. [2022-02-15 13:45:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 13:45:19,131 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:19,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:19,159 INFO L225 Difference]: With dead ends: 11528 [2022-02-15 13:45:19,159 INFO L226 Difference]: Without dead ends: 11339 [2022-02-15 13:45:19,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2835 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=764, Invalid=7792, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:45:19,160 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 939 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 2664 SdHoareTripleChecker+Invalid, 5431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:19,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 2664 Invalid, 5431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:45:19,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2022-02-15 13:45:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 6216. [2022-02-15 13:45:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6216 states, 6215 states have (on average 3.4989541432019307) internal successors, (21746), 6215 states have internal predecessors, (21746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21746 transitions. [2022-02-15 13:45:19,312 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21746 transitions. Word has length 47 [2022-02-15 13:45:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:19,312 INFO L470 AbstractCegarLoop]: Abstraction has 6216 states and 21746 transitions. [2022-02-15 13:45:19,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21746 transitions. [2022-02-15 13:45:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:19,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:19,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:19,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-02-15 13:45:19,323 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:19,324 INFO L85 PathProgramCache]: Analyzing trace with hash -751383811, now seen corresponding path program 144 times [2022-02-15 13:45:19,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:19,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290416748] [2022-02-15 13:45:19,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:19,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:19,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:19,561 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:19,561 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290416748] [2022-02-15 13:45:19,561 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290416748] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:19,561 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:19,561 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:19,562 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883975706] [2022-02-15 13:45:19,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:19,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:19,562 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:19,562 INFO L87 Difference]: Start difference. First operand 6216 states and 21746 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:22,594 INFO L93 Difference]: Finished difference Result 13233 states and 46883 transitions. [2022-02-15 13:45:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-02-15 13:45:22,595 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:22,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:22,627 INFO L225 Difference]: With dead ends: 13233 [2022-02-15 13:45:22,627 INFO L226 Difference]: Without dead ends: 13030 [2022-02-15 13:45:22,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4235 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1007, Invalid=10983, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 13:45:22,628 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 921 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 5826 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 5977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 5826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:22,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 3151 Invalid, 5977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 5826 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:45:22,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2022-02-15 13:45:22,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 6600. [2022-02-15 13:45:22,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6600 states, 6599 states have (on average 3.507804212759509) internal successors, (23148), 6599 states have internal predecessors, (23148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:22,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 23148 transitions. [2022-02-15 13:45:22,781 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 23148 transitions. Word has length 47 [2022-02-15 13:45:22,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:22,781 INFO L470 AbstractCegarLoop]: Abstraction has 6600 states and 23148 transitions. [2022-02-15 13:45:22,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:22,782 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 23148 transitions. [2022-02-15 13:45:22,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:22,793 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:22,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:22,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-02-15 13:45:22,793 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:22,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:22,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1424423741, now seen corresponding path program 145 times [2022-02-15 13:45:22,793 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:22,793 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778818162] [2022-02-15 13:45:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:22,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:23,021 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:23,021 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778818162] [2022-02-15 13:45:23,021 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778818162] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:23,021 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:23,021 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:45:23,021 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091088276] [2022-02-15 13:45:23,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:23,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:45:23,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:45:23,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:45:23,022 INFO L87 Difference]: Start difference. First operand 6600 states and 23148 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:25,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:25,466 INFO L93 Difference]: Finished difference Result 11080 states and 38723 transitions. [2022-02-15 13:45:25,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 13:45:25,466 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:25,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:25,491 INFO L225 Difference]: With dead ends: 11080 [2022-02-15 13:45:25,491 INFO L226 Difference]: Without dead ends: 10843 [2022-02-15 13:45:25,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=605, Invalid=5875, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 13:45:25,492 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 797 mSDsluCounter, 3364 mSDsCounter, 0 mSdLazyCounter, 4517 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 4642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 4517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:25,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 2239 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 4517 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:45:25,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2022-02-15 13:45:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 7034. [2022-02-15 13:45:25,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7034 states, 7033 states have (on average 3.5108772927626903) internal successors, (24692), 7033 states have internal predecessors, (24692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 24692 transitions. [2022-02-15 13:45:25,627 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 24692 transitions. Word has length 47 [2022-02-15 13:45:25,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:25,627 INFO L470 AbstractCegarLoop]: Abstraction has 7034 states and 24692 transitions. [2022-02-15 13:45:25,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 24692 transitions. [2022-02-15 13:45:25,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:25,639 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:25,639 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:25,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-02-15 13:45:25,639 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -554450721, now seen corresponding path program 146 times [2022-02-15 13:45:25,639 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:25,639 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289010308] [2022-02-15 13:45:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:25,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:25,800 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:25,800 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289010308] [2022-02-15 13:45:25,800 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289010308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:25,800 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:25,800 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:25,800 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784093038] [2022-02-15 13:45:25,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:25,800 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:25,801 INFO L87 Difference]: Start difference. First operand 7034 states and 24692 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:28,504 INFO L93 Difference]: Finished difference Result 12694 states and 44788 transitions. [2022-02-15 13:45:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 13:45:28,505 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:28,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:28,535 INFO L225 Difference]: With dead ends: 12694 [2022-02-15 13:45:28,536 INFO L226 Difference]: Without dead ends: 12457 [2022-02-15 13:45:28,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3072 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=790, Invalid=8330, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 13:45:28,537 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 947 mSDsluCounter, 3797 mSDsCounter, 0 mSdLazyCounter, 5067 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 5274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:28,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [947 Valid, 2558 Invalid, 5274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 5067 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:45:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2022-02-15 13:45:28,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 6946. [2022-02-15 13:45:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6945 states have (on average 3.5128869690424764) internal successors, (24397), 6945 states have internal predecessors, (24397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 24397 transitions. [2022-02-15 13:45:28,716 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 24397 transitions. Word has length 47 [2022-02-15 13:45:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:28,716 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 24397 transitions. [2022-02-15 13:45:28,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 24397 transitions. [2022-02-15 13:45:28,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:28,728 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:28,728 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:28,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-02-15 13:45:28,728 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:28,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:28,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1405102629, now seen corresponding path program 147 times [2022-02-15 13:45:28,729 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:28,729 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469880326] [2022-02-15 13:45:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:28,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:28,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:28,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:28,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469880326] [2022-02-15 13:45:28,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469880326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:28,911 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:28,911 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:28,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827994944] [2022-02-15 13:45:28,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:28,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:28,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:28,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:28,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:28,911 INFO L87 Difference]: Start difference. First operand 6946 states and 24397 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:32,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:32,348 INFO L93 Difference]: Finished difference Result 12797 states and 45311 transitions. [2022-02-15 13:45:32,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-02-15 13:45:32,348 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:32,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:32,379 INFO L225 Difference]: With dead ends: 12797 [2022-02-15 13:45:32,380 INFO L226 Difference]: Without dead ends: 12486 [2022-02-15 13:45:32,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=749, Invalid=7807, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:45:32,381 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 863 mSDsluCounter, 4116 mSDsCounter, 0 mSdLazyCounter, 5530 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 5723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 5530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:32,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 2803 Invalid, 5723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 5530 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:45:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12486 states. [2022-02-15 13:45:32,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12486 to 6928. [2022-02-15 13:45:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6928 states, 6927 states have (on average 3.5184062364660025) internal successors, (24372), 6927 states have internal predecessors, (24372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 24372 transitions. [2022-02-15 13:45:32,533 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 24372 transitions. Word has length 47 [2022-02-15 13:45:32,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:32,533 INFO L470 AbstractCegarLoop]: Abstraction has 6928 states and 24372 transitions. [2022-02-15 13:45:32,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 24372 transitions. [2022-02-15 13:45:32,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:32,545 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:32,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:32,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-02-15 13:45:32,545 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:32,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 881846205, now seen corresponding path program 148 times [2022-02-15 13:45:32,545 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:32,546 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315294386] [2022-02-15 13:45:32,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:32,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:32,743 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:32,743 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315294386] [2022-02-15 13:45:32,743 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315294386] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:32,743 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:32,743 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:32,743 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182885168] [2022-02-15 13:45:32,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:32,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:32,744 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:32,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:32,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:32,744 INFO L87 Difference]: Start difference. First operand 6928 states and 24372 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:35,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:35,731 INFO L93 Difference]: Finished difference Result 11278 states and 39722 transitions. [2022-02-15 13:45:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 13:45:35,732 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:35,757 INFO L225 Difference]: With dead ends: 11278 [2022-02-15 13:45:35,758 INFO L226 Difference]: Without dead ends: 11151 [2022-02-15 13:45:35,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=5759, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 13:45:35,759 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 816 mSDsluCounter, 4575 mSDsCounter, 0 mSdLazyCounter, 5478 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 3076 SdHoareTripleChecker+Invalid, 5578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 5478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:35,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 3076 Invalid, 5578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 5478 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:45:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2022-02-15 13:45:35,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 6942. [2022-02-15 13:45:35,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6942 states, 6941 states have (on average 3.5167843250252124) internal successors, (24410), 6941 states have internal predecessors, (24410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:35,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 24410 transitions. [2022-02-15 13:45:35,927 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 24410 transitions. Word has length 47 [2022-02-15 13:45:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:35,927 INFO L470 AbstractCegarLoop]: Abstraction has 6942 states and 24410 transitions. [2022-02-15 13:45:35,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:35,927 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 24410 transitions. [2022-02-15 13:45:35,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:35,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:35,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:35,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-02-15 13:45:35,942 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:35,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash -468902399, now seen corresponding path program 149 times [2022-02-15 13:45:35,947 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:35,947 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184799172] [2022-02-15 13:45:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:35,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:36,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:36,217 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:36,217 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184799172] [2022-02-15 13:45:36,217 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184799172] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:36,217 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:36,217 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:36,217 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205480679] [2022-02-15 13:45:36,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:36,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:36,217 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:36,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:36,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:36,218 INFO L87 Difference]: Start difference. First operand 6942 states and 24410 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:40,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:40,662 INFO L93 Difference]: Finished difference Result 13025 states and 45918 transitions. [2022-02-15 13:45:40,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 13:45:40,663 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:40,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:40,695 INFO L225 Difference]: With dead ends: 13025 [2022-02-15 13:45:40,695 INFO L226 Difference]: Without dead ends: 12836 [2022-02-15 13:45:40,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3465 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=885, Invalid=9417, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 13:45:40,696 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1035 mSDsluCounter, 4828 mSDsCounter, 0 mSdLazyCounter, 5949 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 6171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 5949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:40,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 3144 Invalid, 6171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 5949 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:45:40,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12836 states. [2022-02-15 13:45:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12836 to 6956. [2022-02-15 13:45:40,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6956 states, 6955 states have (on average 3.5168943206326384) internal successors, (24460), 6955 states have internal predecessors, (24460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:40,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 24460 transitions. [2022-02-15 13:45:40,843 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 24460 transitions. Word has length 47 [2022-02-15 13:45:40,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:40,843 INFO L470 AbstractCegarLoop]: Abstraction has 6956 states and 24460 transitions. [2022-02-15 13:45:40,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:40,843 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 24460 transitions. [2022-02-15 13:45:40,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:40,854 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:40,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:40,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-02-15 13:45:40,854 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1319554307, now seen corresponding path program 150 times [2022-02-15 13:45:40,855 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:40,855 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530068946] [2022-02-15 13:45:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:40,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:41,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:41,059 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:41,059 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530068946] [2022-02-15 13:45:41,059 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530068946] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:41,059 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:41,060 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:41,060 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216167154] [2022-02-15 13:45:41,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:41,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:41,060 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:41,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:41,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:41,060 INFO L87 Difference]: Start difference. First operand 6956 states and 24460 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:44,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:44,804 INFO L93 Difference]: Finished difference Result 14539 states and 51585 transitions. [2022-02-15 13:45:44,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-15 13:45:44,804 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:44,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:44,897 INFO L225 Difference]: With dead ends: 14539 [2022-02-15 13:45:44,897 INFO L226 Difference]: Without dead ends: 14336 [2022-02-15 13:45:44,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1147, Invalid=13373, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 13:45:44,898 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 1043 mSDsluCounter, 5432 mSDsCounter, 0 mSdLazyCounter, 6657 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 6847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 6657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:44,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1043 Valid, 3705 Invalid, 6847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 6657 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:45:44,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2022-02-15 13:45:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 6972. [2022-02-15 13:45:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6971 states have (on average 3.518863864581839) internal successors, (24530), 6971 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 24530 transitions. [2022-02-15 13:45:45,053 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 24530 transitions. Word has length 47 [2022-02-15 13:45:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:45,053 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 24530 transitions. [2022-02-15 13:45:45,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 24530 transitions. [2022-02-15 13:45:45,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:45,065 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:45,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:45,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-02-15 13:45:45,066 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:45,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:45,066 INFO L85 PathProgramCache]: Analyzing trace with hash -730368805, now seen corresponding path program 151 times [2022-02-15 13:45:45,066 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:45,066 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011794129] [2022-02-15 13:45:45,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:45,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:45,344 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:45,344 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011794129] [2022-02-15 13:45:45,344 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011794129] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:45,344 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:45,344 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:45,345 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832260799] [2022-02-15 13:45:45,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:45,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:45,345 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:45,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:45,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:45,345 INFO L87 Difference]: Start difference. First operand 6972 states and 24530 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:47,703 INFO L93 Difference]: Finished difference Result 10668 states and 37559 transitions. [2022-02-15 13:45:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 13:45:47,703 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:47,728 INFO L225 Difference]: With dead ends: 10668 [2022-02-15 13:45:47,728 INFO L226 Difference]: Without dead ends: 10541 [2022-02-15 13:45:47,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=454, Invalid=4516, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 13:45:47,729 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 719 mSDsluCounter, 3923 mSDsCounter, 0 mSdLazyCounter, 4710 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 4800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 4710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:47,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [719 Valid, 2731 Invalid, 4800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 4710 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:45:47,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2022-02-15 13:45:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 6994. [2022-02-15 13:45:47,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6994 states, 6993 states have (on average 3.5155155155155153) internal successors, (24584), 6993 states have internal predecessors, (24584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:47,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 24584 transitions. [2022-02-15 13:45:47,872 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 24584 transitions. Word has length 47 [2022-02-15 13:45:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:47,873 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 24584 transitions. [2022-02-15 13:45:47,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 24584 transitions. [2022-02-15 13:45:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:47,885 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:47,885 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:47,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-02-15 13:45:47,885 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:47,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:47,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2101566211, now seen corresponding path program 152 times [2022-02-15 13:45:47,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:47,899 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025828352] [2022-02-15 13:45:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:47,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:47,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:48,075 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:48,075 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025828352] [2022-02-15 13:45:48,075 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025828352] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:48,075 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:48,075 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:45:48,075 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613555246] [2022-02-15 13:45:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:48,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:45:48,075 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:45:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:45:48,076 INFO L87 Difference]: Start difference. First operand 6994 states and 24584 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:49,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:49,806 INFO L93 Difference]: Finished difference Result 10464 states and 36775 transitions. [2022-02-15 13:45:49,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 13:45:49,806 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:49,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:49,829 INFO L225 Difference]: With dead ends: 10464 [2022-02-15 13:45:49,829 INFO L226 Difference]: Without dead ends: 10364 [2022-02-15 13:45:49,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=400, Invalid=3760, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 13:45:49,829 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 646 mSDsluCounter, 3691 mSDsCounter, 0 mSdLazyCounter, 4308 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 4388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 4308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:49,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 2513 Invalid, 4388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 4308 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:45:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2022-02-15 13:45:49,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 7003. [2022-02-15 13:45:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7003 states, 7002 states have (on average 3.51413881748072) internal successors, (24606), 7002 states have internal predecessors, (24606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 24606 transitions. [2022-02-15 13:45:49,955 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 24606 transitions. Word has length 47 [2022-02-15 13:45:49,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:49,955 INFO L470 AbstractCegarLoop]: Abstraction has 7003 states and 24606 transitions. [2022-02-15 13:45:49,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 24606 transitions. [2022-02-15 13:45:49,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:49,966 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:49,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:49,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-02-15 13:45:49,967 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:49,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:49,967 INFO L85 PathProgramCache]: Analyzing trace with hash 758333595, now seen corresponding path program 153 times [2022-02-15 13:45:49,967 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:49,967 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913222806] [2022-02-15 13:45:49,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:49,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:50,235 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:50,235 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913222806] [2022-02-15 13:45:50,235 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913222806] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:50,235 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:50,235 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:50,235 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422541979] [2022-02-15 13:45:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:50,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:50,235 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:50,236 INFO L87 Difference]: Start difference. First operand 7003 states and 24606 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:53,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:53,395 INFO L93 Difference]: Finished difference Result 11977 states and 42156 transitions. [2022-02-15 13:45:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 13:45:53,395 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:53,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:53,423 INFO L225 Difference]: With dead ends: 11977 [2022-02-15 13:45:53,423 INFO L226 Difference]: Without dead ends: 11823 [2022-02-15 13:45:53,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=780, Invalid=7962, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 13:45:53,424 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 893 mSDsluCounter, 4803 mSDsCounter, 0 mSdLazyCounter, 5616 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3453 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 5616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:53,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 3453 Invalid, 5775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 5616 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:45:53,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2022-02-15 13:45:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 7194. [2022-02-15 13:45:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7194 states, 7193 states have (on average 3.510774363964966) internal successors, (25253), 7193 states have internal predecessors, (25253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 25253 transitions. [2022-02-15 13:45:53,605 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 25253 transitions. Word has length 47 [2022-02-15 13:45:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:53,605 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 25253 transitions. [2022-02-15 13:45:53,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 25253 transitions. [2022-02-15 13:45:53,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:53,617 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:53,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:53,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-02-15 13:45:53,618 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:53,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:53,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1316199937, now seen corresponding path program 154 times [2022-02-15 13:45:53,618 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:53,618 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59495080] [2022-02-15 13:45:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:53,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:53,795 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:53,796 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59495080] [2022-02-15 13:45:53,796 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59495080] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:53,796 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:53,796 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:53,796 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275669496] [2022-02-15 13:45:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:53,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:53,796 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:53,796 INFO L87 Difference]: Start difference. First operand 7194 states and 25253 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:45:56,633 INFO L93 Difference]: Finished difference Result 13905 states and 48872 transitions. [2022-02-15 13:45:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-02-15 13:45:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:45:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:45:56,666 INFO L225 Difference]: With dead ends: 13905 [2022-02-15 13:45:56,667 INFO L226 Difference]: Without dead ends: 13767 [2022-02-15 13:45:56,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3468 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=827, Invalid=9475, Unknown=0, NotChecked=0, Total=10302 [2022-02-15 13:45:56,668 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1016 mSDsluCounter, 5324 mSDsCounter, 0 mSdLazyCounter, 5963 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 3748 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 5963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:45:56,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 3748 Invalid, 6178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 5963 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:45:56,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13767 states. [2022-02-15 13:45:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13767 to 7314. [2022-02-15 13:45:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7314 states, 7313 states have (on average 3.5134691645015725) internal successors, (25694), 7313 states have internal predecessors, (25694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7314 states to 7314 states and 25694 transitions. [2022-02-15 13:45:56,830 INFO L78 Accepts]: Start accepts. Automaton has 7314 states and 25694 transitions. Word has length 47 [2022-02-15 13:45:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:45:56,830 INFO L470 AbstractCegarLoop]: Abstraction has 7314 states and 25694 transitions. [2022-02-15 13:45:56,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:45:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7314 states and 25694 transitions. [2022-02-15 13:45:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:45:56,842 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:45:56,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:45:56,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-02-15 13:45:56,842 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:45:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:45:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash 152500989, now seen corresponding path program 155 times [2022-02-15 13:45:56,843 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:45:56,843 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899007042] [2022-02-15 13:45:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:45:56,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:45:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:45:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:45:57,008 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:45:57,008 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899007042] [2022-02-15 13:45:57,008 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899007042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:45:57,008 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:45:57,008 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:45:57,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831671379] [2022-02-15 13:45:57,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:45:57,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:45:57,009 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:45:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:45:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:45:57,009 INFO L87 Difference]: Start difference. First operand 7314 states and 25694 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:01,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:01,116 INFO L93 Difference]: Finished difference Result 14970 states and 52737 transitions. [2022-02-15 13:46:01,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 13:46:01,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:01,155 INFO L225 Difference]: With dead ends: 14970 [2022-02-15 13:46:01,155 INFO L226 Difference]: Without dead ends: 14857 [2022-02-15 13:46:01,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4818 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1072, Invalid=12500, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 13:46:01,156 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 1015 mSDsluCounter, 5343 mSDsCounter, 0 mSdLazyCounter, 6371 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 6597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 6371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:01,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 3783 Invalid, 6597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 6371 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 13:46:01,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2022-02-15 13:46:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 7329. [2022-02-15 13:46:01,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 3.513100436681223) internal successors, (25744), 7328 states have internal predecessors, (25744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:01,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25744 transitions. [2022-02-15 13:46:01,333 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25744 transitions. Word has length 47 [2022-02-15 13:46:01,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:01,333 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 25744 transitions. [2022-02-15 13:46:01,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:01,333 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25744 transitions. [2022-02-15 13:46:01,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:01,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:01,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:01,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-02-15 13:46:01,346 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:01,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1300529253, now seen corresponding path program 156 times [2022-02-15 13:46:01,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:01,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222317892] [2022-02-15 13:46:01,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:01,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:01,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:01,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:01,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222317892] [2022-02-15 13:46:01,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222317892] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:01,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:01,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:01,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084179002] [2022-02-15 13:46:01,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:01,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:01,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:01,508 INFO L87 Difference]: Start difference. First operand 7329 states and 25744 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:03,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:03,373 INFO L93 Difference]: Finished difference Result 11739 states and 41164 transitions. [2022-02-15 13:46:03,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 13:46:03,373 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:03,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:03,400 INFO L225 Difference]: With dead ends: 11739 [2022-02-15 13:46:03,400 INFO L226 Difference]: Without dead ends: 11639 [2022-02-15 13:46:03,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=471, Invalid=4499, Unknown=0, NotChecked=0, Total=4970 [2022-02-15 13:46:03,401 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 704 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 4223 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2513 SdHoareTripleChecker+Invalid, 4313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 4223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:03,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 2513 Invalid, 4313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 4223 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:46:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11639 states. [2022-02-15 13:46:03,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11639 to 7338. [2022-02-15 13:46:03,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 7337 states have (on average 3.511789559765572) internal successors, (25766), 7337 states have internal predecessors, (25766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 25766 transitions. [2022-02-15 13:46:03,548 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 25766 transitions. Word has length 47 [2022-02-15 13:46:03,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:03,548 INFO L470 AbstractCegarLoop]: Abstraction has 7338 states and 25766 transitions. [2022-02-15 13:46:03,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:03,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 25766 transitions. [2022-02-15 13:46:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:03,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:03,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:03,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-02-15 13:46:03,560 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1366591811, now seen corresponding path program 157 times [2022-02-15 13:46:03,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:03,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605004782] [2022-02-15 13:46:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:03,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:03,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:03,772 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:03,772 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605004782] [2022-02-15 13:46:03,772 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605004782] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:03,772 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:03,772 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:03,772 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800847361] [2022-02-15 13:46:03,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:03,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:03,772 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:03,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:03,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:03,772 INFO L87 Difference]: Start difference. First operand 7338 states and 25766 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:07,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:07,552 INFO L93 Difference]: Finished difference Result 13320 states and 46717 transitions. [2022-02-15 13:46:07,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 13:46:07,553 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:07,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:07,584 INFO L225 Difference]: With dead ends: 13320 [2022-02-15 13:46:07,584 INFO L226 Difference]: Without dead ends: 13178 [2022-02-15 13:46:07,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=887, Invalid=9619, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 13:46:07,586 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1030 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 5846 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 6032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 5846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:07,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 3686 Invalid, 6032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 5846 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:46:07,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13178 states. [2022-02-15 13:46:07,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13178 to 7329. [2022-02-15 13:46:07,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7329 states, 7328 states have (on average 3.5141921397379914) internal successors, (25752), 7328 states have internal predecessors, (25752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:07,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25752 transitions. [2022-02-15 13:46:07,836 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25752 transitions. Word has length 47 [2022-02-15 13:46:07,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:07,837 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 25752 transitions. [2022-02-15 13:46:07,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:07,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25752 transitions. [2022-02-15 13:46:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:07,851 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:07,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:07,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-02-15 13:46:07,851 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 896094299, now seen corresponding path program 158 times [2022-02-15 13:46:07,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:07,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482003956] [2022-02-15 13:46:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:07,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:08,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:08,110 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:08,110 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482003956] [2022-02-15 13:46:08,110 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482003956] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:08,110 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:08,110 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:08,110 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861368726] [2022-02-15 13:46:08,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:08,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:08,111 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:08,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:08,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:08,111 INFO L87 Difference]: Start difference. First operand 7329 states and 25752 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:10,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:10,424 INFO L93 Difference]: Finished difference Result 11833 states and 41364 transitions. [2022-02-15 13:46:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-02-15 13:46:10,425 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:10,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:10,452 INFO L225 Difference]: With dead ends: 11833 [2022-02-15 13:46:10,452 INFO L226 Difference]: Without dead ends: 11696 [2022-02-15 13:46:10,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=522, Invalid=5330, Unknown=0, NotChecked=0, Total=5852 [2022-02-15 13:46:10,453 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 811 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 4730 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 4846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 4730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:10,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 2776 Invalid, 4846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 4730 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:46:10,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2022-02-15 13:46:10,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 7365. [2022-02-15 13:46:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7365 states, 7364 states have (on average 3.509234111895709) internal successors, (25842), 7364 states have internal predecessors, (25842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7365 states to 7365 states and 25842 transitions. [2022-02-15 13:46:10,603 INFO L78 Accepts]: Start accepts. Automaton has 7365 states and 25842 transitions. Word has length 47 [2022-02-15 13:46:10,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:10,603 INFO L470 AbstractCegarLoop]: Abstraction has 7365 states and 25842 transitions. [2022-02-15 13:46:10,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:10,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7365 states and 25842 transitions. [2022-02-15 13:46:10,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:10,616 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:10,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:10,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-02-15 13:46:10,616 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1764279269, now seen corresponding path program 159 times [2022-02-15 13:46:10,616 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:10,616 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290096856] [2022-02-15 13:46:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:10,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:10,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:10,787 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:10,787 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290096856] [2022-02-15 13:46:10,787 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290096856] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:10,787 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:10,787 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:10,787 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295097934] [2022-02-15 13:46:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:10,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:10,788 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:10,788 INFO L87 Difference]: Start difference. First operand 7365 states and 25842 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:13,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:13,836 INFO L93 Difference]: Finished difference Result 12448 states and 43499 transitions. [2022-02-15 13:46:13,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 13:46:13,836 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:13,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:13,866 INFO L225 Difference]: With dead ends: 12448 [2022-02-15 13:46:13,866 INFO L226 Difference]: Without dead ends: 12308 [2022-02-15 13:46:13,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=738, Invalid=8382, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 13:46:13,867 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 975 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 5400 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 3285 SdHoareTripleChecker+Invalid, 5607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 5400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:13,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 3285 Invalid, 5607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 5400 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:46:13,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12308 states. [2022-02-15 13:46:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12308 to 7347. [2022-02-15 13:46:14,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7347 states, 7346 states have (on average 3.510890280424721) internal successors, (25791), 7346 states have internal predecessors, (25791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 25791 transitions. [2022-02-15 13:46:14,019 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 25791 transitions. Word has length 47 [2022-02-15 13:46:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 7347 states and 25791 transitions. [2022-02-15 13:46:14,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:14,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 25791 transitions. [2022-02-15 13:46:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:14,032 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:14,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:14,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-02-15 13:46:14,032 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash 2097663485, now seen corresponding path program 160 times [2022-02-15 13:46:14,032 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:14,032 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978075051] [2022-02-15 13:46:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:14,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:14,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:14,202 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:14,202 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978075051] [2022-02-15 13:46:14,202 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978075051] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:14,202 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:14,202 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:14,202 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312744372] [2022-02-15 13:46:14,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:14,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:14,202 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:14,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:14,203 INFO L87 Difference]: Start difference. First operand 7347 states and 25791 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:17,745 INFO L93 Difference]: Finished difference Result 13400 states and 47109 transitions. [2022-02-15 13:46:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 13:46:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:17,777 INFO L225 Difference]: With dead ends: 13400 [2022-02-15 13:46:17,777 INFO L226 Difference]: Without dead ends: 13263 [2022-02-15 13:46:17,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=862, Invalid=9644, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 13:46:17,778 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 1045 mSDsluCounter, 4426 mSDsCounter, 0 mSdLazyCounter, 5883 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 6130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 5883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:17,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 2992 Invalid, 6130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 5883 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:46:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13263 states. [2022-02-15 13:46:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13263 to 7496. [2022-02-15 13:46:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7496 states, 7495 states have (on average 3.5179452968645766) internal successors, (26367), 7495 states have internal predecessors, (26367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 26367 transitions. [2022-02-15 13:46:17,941 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 26367 transitions. Word has length 47 [2022-02-15 13:46:17,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:17,941 INFO L470 AbstractCegarLoop]: Abstraction has 7496 states and 26367 transitions. [2022-02-15 13:46:17,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:17,941 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 26367 transitions. [2022-02-15 13:46:17,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:17,954 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:17,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:17,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-02-15 13:46:17,954 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1247011577, now seen corresponding path program 161 times [2022-02-15 13:46:17,955 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:17,955 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080903506] [2022-02-15 13:46:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:17,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:18,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:18,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080903506] [2022-02-15 13:46:18,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080903506] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:18,206 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:18,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:18,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621283586] [2022-02-15 13:46:18,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:18,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:18,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:18,207 INFO L87 Difference]: Start difference. First operand 7496 states and 26367 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:22,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:22,405 INFO L93 Difference]: Finished difference Result 13625 states and 47957 transitions. [2022-02-15 13:46:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-02-15 13:46:22,406 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:22,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:22,439 INFO L225 Difference]: With dead ends: 13625 [2022-02-15 13:46:22,439 INFO L226 Difference]: Without dead ends: 13365 [2022-02-15 13:46:22,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3313 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=816, Invalid=9084, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 13:46:22,440 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 971 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 5918 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 6145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 5918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:22,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 3089 Invalid, 6145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 5918 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:46:22,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2022-02-15 13:46:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 7367. [2022-02-15 13:46:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 3.5116752647298397) internal successors, (25867), 7366 states have internal predecessors, (25867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:22,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2022-02-15 13:46:22,678 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2022-02-15 13:46:22,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:22,678 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2022-02-15 13:46:22,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:22,678 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2022-02-15 13:46:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:22,691 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:22,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:22,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-02-15 13:46:22,691 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 157641055, now seen corresponding path program 162 times [2022-02-15 13:46:22,691 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:22,691 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098336150] [2022-02-15 13:46:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:22,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:22,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:22,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098336150] [2022-02-15 13:46:22,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098336150] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:22,946 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:22,946 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:22,946 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75904872] [2022-02-15 13:46:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:22,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:22,946 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:22,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:22,947 INFO L87 Difference]: Start difference. First operand 7367 states and 25867 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:26,620 INFO L93 Difference]: Finished difference Result 14353 states and 50433 transitions. [2022-02-15 13:46:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 13:46:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:26,655 INFO L225 Difference]: With dead ends: 14353 [2022-02-15 13:46:26,655 INFO L226 Difference]: Without dead ends: 14231 [2022-02-15 13:46:26,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=871, Invalid=10259, Unknown=0, NotChecked=0, Total=11130 [2022-02-15 13:46:26,657 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 1016 mSDsluCounter, 5456 mSDsCounter, 0 mSdLazyCounter, 6303 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 4003 SdHoareTripleChecker+Invalid, 6524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 6303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:26,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1016 Valid, 4003 Invalid, 6524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 6303 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:46:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2022-02-15 13:46:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 7367. [2022-02-15 13:46:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7367 states, 7366 states have (on average 3.5116752647298397) internal successors, (25867), 7366 states have internal predecessors, (25867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:26,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2022-02-15 13:46:26,826 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2022-02-15 13:46:26,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:26,826 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2022-02-15 13:46:26,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2022-02-15 13:46:26,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:26,839 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:26,839 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:26,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-02-15 13:46:26,839 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:26,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:26,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1006057893, now seen corresponding path program 163 times [2022-02-15 13:46:26,840 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:26,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949919922] [2022-02-15 13:46:26,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:26,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:27,005 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:27,005 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949919922] [2022-02-15 13:46:27,005 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949919922] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:27,005 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:27,005 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:27,005 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746400657] [2022-02-15 13:46:27,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:27,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:27,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:27,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:27,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:27,006 INFO L87 Difference]: Start difference. First operand 7367 states and 25867 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:30,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:30,559 INFO L93 Difference]: Finished difference Result 14566 states and 51171 transitions. [2022-02-15 13:46:30,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 13:46:30,559 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:30,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:30,594 INFO L225 Difference]: With dead ends: 14566 [2022-02-15 13:46:30,595 INFO L226 Difference]: Without dead ends: 14451 [2022-02-15 13:46:30,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4334 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=987, Invalid=11445, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 13:46:30,596 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 986 mSDsluCounter, 5356 mSDsCounter, 0 mSdLazyCounter, 6597 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 6810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 6597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:30,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 3853 Invalid, 6810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 6597 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:46:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14451 states. [2022-02-15 13:46:30,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14451 to 7409. [2022-02-15 13:46:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7409 states, 7408 states have (on average 3.511744060475162) internal successors, (26015), 7408 states have internal predecessors, (26015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:30,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7409 states to 7409 states and 26015 transitions. [2022-02-15 13:46:30,769 INFO L78 Accepts]: Start accepts. Automaton has 7409 states and 26015 transitions. Word has length 47 [2022-02-15 13:46:30,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:30,769 INFO L470 AbstractCegarLoop]: Abstraction has 7409 states and 26015 transitions. [2022-02-15 13:46:30,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:30,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7409 states and 26015 transitions. [2022-02-15 13:46:30,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:30,781 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:30,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:30,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-02-15 13:46:30,782 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:30,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:30,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1835879161, now seen corresponding path program 164 times [2022-02-15 13:46:30,782 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:30,782 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157850558] [2022-02-15 13:46:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:30,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:30,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:30,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:30,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157850558] [2022-02-15 13:46:30,995 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157850558] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:30,995 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:30,995 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:30,995 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732971739] [2022-02-15 13:46:30,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:30,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:30,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:30,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:30,996 INFO L87 Difference]: Start difference. First operand 7409 states and 26015 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:33,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:33,291 INFO L93 Difference]: Finished difference Result 11320 states and 39731 transitions. [2022-02-15 13:46:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 13:46:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:33,317 INFO L225 Difference]: With dead ends: 11320 [2022-02-15 13:46:33,317 INFO L226 Difference]: Without dead ends: 11220 [2022-02-15 13:46:33,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=4118, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 13:46:33,318 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 674 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 4009 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 4096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 4009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:33,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2362 Invalid, 4096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 4009 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:46:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2022-02-15 13:46:33,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 7418. [2022-02-15 13:46:33,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7418 states, 7417 states have (on average 3.5104489685856817) internal successors, (26037), 7417 states have internal predecessors, (26037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 26037 transitions. [2022-02-15 13:46:33,470 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 26037 transitions. Word has length 47 [2022-02-15 13:46:33,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:33,471 INFO L470 AbstractCegarLoop]: Abstraction has 7418 states and 26037 transitions. [2022-02-15 13:46:33,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 26037 transitions. [2022-02-15 13:46:33,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:33,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:33,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:33,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-02-15 13:46:33,483 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1769816603, now seen corresponding path program 165 times [2022-02-15 13:46:33,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:33,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625002124] [2022-02-15 13:46:33,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:33,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:33,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:33,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:33,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625002124] [2022-02-15 13:46:33,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625002124] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:33,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:33,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:46:33,733 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397234150] [2022-02-15 13:46:33,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:33,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:46:33,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:33,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:46:33,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:46:33,733 INFO L87 Difference]: Start difference. First operand 7418 states and 26037 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:37,894 INFO L93 Difference]: Finished difference Result 12752 states and 44502 transitions. [2022-02-15 13:46:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 13:46:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:37,924 INFO L225 Difference]: With dead ends: 12752 [2022-02-15 13:46:37,924 INFO L226 Difference]: Without dead ends: 12367 [2022-02-15 13:46:37,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=772, Invalid=8348, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 13:46:37,925 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 952 mSDsluCounter, 4935 mSDsCounter, 0 mSdLazyCounter, 5702 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 5862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 5702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:37,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [952 Valid, 3688 Invalid, 5862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 5702 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:46:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2022-02-15 13:46:38,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 7533. [2022-02-15 13:46:38,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7533 states, 7532 states have (on average 3.5123473181094) internal successors, (26455), 7532 states have internal predecessors, (26455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 26455 transitions. [2022-02-15 13:46:38,148 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 26455 transitions. Word has length 47 [2022-02-15 13:46:38,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:38,148 INFO L470 AbstractCegarLoop]: Abstraction has 7533 states and 26455 transitions. [2022-02-15 13:46:38,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 26455 transitions. [2022-02-15 13:46:38,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:38,161 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:38,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:38,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-02-15 13:46:38,161 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:38,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:38,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1690028645, now seen corresponding path program 166 times [2022-02-15 13:46:38,162 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:38,162 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365381766] [2022-02-15 13:46:38,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:38,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:38,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:38,398 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:38,398 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365381766] [2022-02-15 13:46:38,398 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365381766] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:38,398 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:38,398 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:38,399 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17726074] [2022-02-15 13:46:38,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:38,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:38,399 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:38,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:38,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:38,399 INFO L87 Difference]: Start difference. First operand 7533 states and 26455 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:41,804 INFO L93 Difference]: Finished difference Result 12440 states and 43725 transitions. [2022-02-15 13:46:41,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-02-15 13:46:41,804 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:41,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:41,833 INFO L225 Difference]: With dead ends: 12440 [2022-02-15 13:46:41,834 INFO L226 Difference]: Without dead ends: 12207 [2022-02-15 13:46:41,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=617, Invalid=6355, Unknown=0, NotChecked=0, Total=6972 [2022-02-15 13:46:41,835 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 799 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 5272 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 3066 SdHoareTripleChecker+Invalid, 5373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 5272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:41,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 3066 Invalid, 5373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 5272 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:46:41,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12207 states. [2022-02-15 13:46:41,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12207 to 7643. [2022-02-15 13:46:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7643 states, 7642 states have (on average 3.51086103114368) internal successors, (26830), 7642 states have internal predecessors, (26830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:41,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 26830 transitions. [2022-02-15 13:46:41,992 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 26830 transitions. Word has length 47 [2022-02-15 13:46:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:41,992 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 26830 transitions. [2022-02-15 13:46:41,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 26830 transitions. [2022-02-15 13:46:42,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:42,005 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:42,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:42,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-02-15 13:46:42,005 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:42,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:42,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1254190047, now seen corresponding path program 167 times [2022-02-15 13:46:42,005 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:42,005 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854685383] [2022-02-15 13:46:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:42,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:42,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:42,215 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:42,215 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854685383] [2022-02-15 13:46:42,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854685383] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:42,215 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:42,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:42,216 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191617582] [2022-02-15 13:46:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:42,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:42,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:42,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:42,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:42,216 INFO L87 Difference]: Start difference. First operand 7643 states and 26830 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:46,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:46,396 INFO L93 Difference]: Finished difference Result 13721 states and 48302 transitions. [2022-02-15 13:46:46,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-02-15 13:46:46,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:46,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:46,428 INFO L225 Difference]: With dead ends: 13721 [2022-02-15 13:46:46,429 INFO L226 Difference]: Without dead ends: 13526 [2022-02-15 13:46:46,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=942, Invalid=9978, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 13:46:46,430 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 930 mSDsluCounter, 4431 mSDsCounter, 0 mSdLazyCounter, 5773 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 3079 SdHoareTripleChecker+Invalid, 5942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 5773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:46,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 3079 Invalid, 5942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 5773 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:46:46,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13526 states. [2022-02-15 13:46:46,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13526 to 7823. [2022-02-15 13:46:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7823 states, 7822 states have (on average 3.5175147021222193) internal successors, (27514), 7822 states have internal predecessors, (27514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:46,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 27514 transitions. [2022-02-15 13:46:46,596 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 27514 transitions. Word has length 47 [2022-02-15 13:46:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:46,596 INFO L470 AbstractCegarLoop]: Abstraction has 7823 states and 27514 transitions. [2022-02-15 13:46:46,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 27514 transitions. [2022-02-15 13:46:46,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:46,610 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:46,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:46,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-02-15 13:46:46,610 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:46,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:46,610 INFO L85 PathProgramCache]: Analyzing trace with hash 403538139, now seen corresponding path program 168 times [2022-02-15 13:46:46,610 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:46,610 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614609118] [2022-02-15 13:46:46,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:46,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:46,852 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:46,852 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614609118] [2022-02-15 13:46:46,852 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614609118] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:46,852 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:46,852 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:46,852 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157660918] [2022-02-15 13:46:46,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:46,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:46,852 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:46,853 INFO L87 Difference]: Start difference. First operand 7823 states and 27514 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:52,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:52,215 INFO L93 Difference]: Finished difference Result 15923 states and 56409 transitions. [2022-02-15 13:46:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-02-15 13:46:52,215 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:52,253 INFO L225 Difference]: With dead ends: 15923 [2022-02-15 13:46:52,254 INFO L226 Difference]: Without dead ends: 15714 [2022-02-15 13:46:52,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6137 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1257, Invalid=15255, Unknown=0, NotChecked=0, Total=16512 [2022-02-15 13:46:52,255 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 1014 mSDsluCounter, 5165 mSDsCounter, 0 mSdLazyCounter, 6635 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 6802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 6635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:52,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 3700 Invalid, 6802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 6635 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 13:46:52,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15714 states. [2022-02-15 13:46:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15714 to 7927. [2022-02-15 13:46:52,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7927 states, 7926 states have (on average 3.5170325510976532) internal successors, (27876), 7926 states have internal predecessors, (27876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:52,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27876 transitions. [2022-02-15 13:46:52,449 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27876 transitions. Word has length 47 [2022-02-15 13:46:52,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:52,450 INFO L470 AbstractCegarLoop]: Abstraction has 7927 states and 27876 transitions. [2022-02-15 13:46:52,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:52,450 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27876 transitions. [2022-02-15 13:46:52,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:52,464 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:52,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:52,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-02-15 13:46:52,465 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:52,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1715621605, now seen corresponding path program 169 times [2022-02-15 13:46:52,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:52,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45225010] [2022-02-15 13:46:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:52,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:52,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:52,716 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:52,716 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45225010] [2022-02-15 13:46:52,716 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45225010] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:52,716 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:52,716 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:46:52,716 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020276730] [2022-02-15 13:46:52,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:52,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:46:52,716 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:52,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:46:52,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:46:52,717 INFO L87 Difference]: Start difference. First operand 7927 states and 27876 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:56,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:46:56,146 INFO L93 Difference]: Finished difference Result 11868 states and 41423 transitions. [2022-02-15 13:46:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 13:46:56,147 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:46:56,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:46:56,174 INFO L225 Difference]: With dead ends: 11868 [2022-02-15 13:46:56,174 INFO L226 Difference]: Without dead ends: 11625 [2022-02-15 13:46:56,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=626, Invalid=6180, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 13:46:56,174 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 736 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 4831 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 4938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:46:56,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [736 Valid, 2425 Invalid, 4938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4831 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:46:56,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2022-02-15 13:46:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 8215. [2022-02-15 13:46:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8215 states, 8214 states have (on average 3.5175310445580714) internal successors, (28893), 8214 states have internal predecessors, (28893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:56,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 28893 transitions. [2022-02-15 13:46:56,320 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 28893 transitions. Word has length 47 [2022-02-15 13:46:56,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:46:56,320 INFO L470 AbstractCegarLoop]: Abstraction has 8215 states and 28893 transitions. [2022-02-15 13:46:56,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:46:56,320 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 28893 transitions. [2022-02-15 13:46:56,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:46:56,334 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:46:56,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:46:56,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-02-15 13:46:56,334 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:46:56,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:46:56,334 INFO L85 PathProgramCache]: Analyzing trace with hash 600471229, now seen corresponding path program 170 times [2022-02-15 13:46:56,334 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:46:56,335 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070845110] [2022-02-15 13:46:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:46:56,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:46:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:46:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:46:56,539 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:46:56,539 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070845110] [2022-02-15 13:46:56,539 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070845110] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:46:56,539 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:46:56,539 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:46:56,539 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191375289] [2022-02-15 13:46:56,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:46:56,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:46:56,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:46:56,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:46:56,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:46:56,540 INFO L87 Difference]: Start difference. First operand 8215 states and 28893 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:00,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:00,992 INFO L93 Difference]: Finished difference Result 14645 states and 51587 transitions. [2022-02-15 13:47:00,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-15 13:47:00,992 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:00,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:01,026 INFO L225 Difference]: With dead ends: 14645 [2022-02-15 13:47:01,026 INFO L226 Difference]: Without dead ends: 14402 [2022-02-15 13:47:01,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=985, Invalid=11005, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 13:47:01,028 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 954 mSDsluCounter, 4463 mSDsCounter, 0 mSdLazyCounter, 5958 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 954 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 6157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 5958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:01,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [954 Valid, 3165 Invalid, 6157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 5958 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:47:01,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2022-02-15 13:47:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 8211. [2022-02-15 13:47:01,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8211 states, 8210 states have (on average 3.5266747868453105) internal successors, (28954), 8210 states have internal predecessors, (28954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 28954 transitions. [2022-02-15 13:47:01,269 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 28954 transitions. Word has length 47 [2022-02-15 13:47:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:01,269 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 28954 transitions. [2022-02-15 13:47:01,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:01,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 28954 transitions. [2022-02-15 13:47:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:01,283 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:01,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:01,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-02-15 13:47:01,283 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:01,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -250180679, now seen corresponding path program 171 times [2022-02-15 13:47:01,284 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:01,284 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647712505] [2022-02-15 13:47:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:01,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:01,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:01,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647712505] [2022-02-15 13:47:01,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647712505] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:01,528 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:01,528 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:47:01,528 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279288142] [2022-02-15 13:47:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:01,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:47:01,528 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:47:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:47:01,529 INFO L87 Difference]: Start difference. First operand 8211 states and 28954 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:06,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:06,694 INFO L93 Difference]: Finished difference Result 15299 states and 54095 transitions. [2022-02-15 13:47:06,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-02-15 13:47:06,695 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:06,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:06,732 INFO L225 Difference]: With dead ends: 15299 [2022-02-15 13:47:06,732 INFO L226 Difference]: Without dead ends: 14982 [2022-02-15 13:47:06,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5291 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1124, Invalid=13396, Unknown=0, NotChecked=0, Total=14520 [2022-02-15 13:47:06,734 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 976 mSDsluCounter, 4822 mSDsCounter, 0 mSdLazyCounter, 6356 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 6560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 6356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:06,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [976 Valid, 3518 Invalid, 6560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 6356 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 13:47:06,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14982 states. [2022-02-15 13:47:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14982 to 7895. [2022-02-15 13:47:06,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 7894 states have (on average 3.5249556625285026) internal successors, (27826), 7894 states have internal predecessors, (27826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 27826 transitions. [2022-02-15 13:47:07,008 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 27826 transitions. Word has length 47 [2022-02-15 13:47:07,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:07,008 INFO L470 AbstractCegarLoop]: Abstraction has 7895 states and 27826 transitions. [2022-02-15 13:47:07,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:07,008 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 27826 transitions. [2022-02-15 13:47:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:07,025 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:07,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:07,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-02-15 13:47:07,025 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:07,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 172664765, now seen corresponding path program 172 times [2022-02-15 13:47:07,026 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:07,026 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582354986] [2022-02-15 13:47:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:07,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:07,291 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:07,291 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582354986] [2022-02-15 13:47:07,291 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582354986] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:07,291 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:07,291 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:07,291 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88232509] [2022-02-15 13:47:07,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:07,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:07,291 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:07,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:07,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:07,292 INFO L87 Difference]: Start difference. First operand 7895 states and 27826 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:11,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:11,270 INFO L93 Difference]: Finished difference Result 13242 states and 46560 transitions. [2022-02-15 13:47:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-02-15 13:47:11,271 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:11,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:11,303 INFO L225 Difference]: With dead ends: 13242 [2022-02-15 13:47:11,303 INFO L226 Difference]: Without dead ends: 13115 [2022-02-15 13:47:11,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2722 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=709, Invalid=7847, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:47:11,305 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 877 mSDsluCounter, 5185 mSDsCounter, 0 mSdLazyCounter, 6142 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 6261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 6142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:11,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 3537 Invalid, 6261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 6142 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:47:11,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2022-02-15 13:47:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 7909. [2022-02-15 13:47:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 7908 states have (on average 3.5235204855842186) internal successors, (27864), 7908 states have internal predecessors, (27864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:11,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 27864 transitions. [2022-02-15 13:47:11,470 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 27864 transitions. Word has length 47 [2022-02-15 13:47:11,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:11,470 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 27864 transitions. [2022-02-15 13:47:11,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:11,470 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 27864 transitions. [2022-02-15 13:47:11,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:11,483 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:11,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:11,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-02-15 13:47:11,483 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:11,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:11,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1178083839, now seen corresponding path program 173 times [2022-02-15 13:47:11,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:11,484 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953525559] [2022-02-15 13:47:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:11,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:11,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:11,746 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:11,746 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953525559] [2022-02-15 13:47:11,746 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953525559] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:11,746 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:11,746 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:11,747 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999938871] [2022-02-15 13:47:11,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:11,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:11,747 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:11,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:11,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:11,747 INFO L87 Difference]: Start difference. First operand 7909 states and 27864 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:15,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:15,731 INFO L93 Difference]: Finished difference Result 14419 states and 50788 transitions. [2022-02-15 13:47:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 13:47:15,732 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:15,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:15,765 INFO L225 Difference]: With dead ends: 14419 [2022-02-15 13:47:15,765 INFO L226 Difference]: Without dead ends: 14330 [2022-02-15 13:47:15,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1025, Invalid=11407, Unknown=0, NotChecked=0, Total=12432 [2022-02-15 13:47:15,767 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 1003 mSDsluCounter, 4908 mSDsCounter, 0 mSdLazyCounter, 6185 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 3378 SdHoareTripleChecker+Invalid, 6379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 6185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:15,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 3378 Invalid, 6379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 6185 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:47:15,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14330 states. [2022-02-15 13:47:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14330 to 7917. [2022-02-15 13:47:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7917 states, 7916 states have (on average 3.5237493683678625) internal successors, (27894), 7916 states have internal predecessors, (27894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:15,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 27894 transitions. [2022-02-15 13:47:15,945 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 27894 transitions. Word has length 47 [2022-02-15 13:47:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:15,945 INFO L470 AbstractCegarLoop]: Abstraction has 7917 states and 27894 transitions. [2022-02-15 13:47:15,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 27894 transitions. [2022-02-15 13:47:15,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:15,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:15,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:15,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-02-15 13:47:15,958 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:15,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2028735747, now seen corresponding path program 174 times [2022-02-15 13:47:15,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:15,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592582779] [2022-02-15 13:47:15,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:15,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:16,128 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:16,128 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592582779] [2022-02-15 13:47:16,128 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592582779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:16,128 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:16,128 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:16,128 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988939876] [2022-02-15 13:47:16,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:16,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:16,128 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:16,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:16,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:16,129 INFO L87 Difference]: Start difference. First operand 7917 states and 27894 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:20,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:20,169 INFO L93 Difference]: Finished difference Result 16386 states and 58025 transitions. [2022-02-15 13:47:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-15 13:47:20,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:20,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:20,207 INFO L225 Difference]: With dead ends: 16386 [2022-02-15 13:47:20,208 INFO L226 Difference]: Without dead ends: 16283 [2022-02-15 13:47:20,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7527 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1451, Invalid=18571, Unknown=0, NotChecked=0, Total=20022 [2022-02-15 13:47:20,227 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 1119 mSDsluCounter, 6013 mSDsCounter, 0 mSdLazyCounter, 7544 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 4200 SdHoareTripleChecker+Invalid, 7752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 7544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:20,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1119 Valid, 4200 Invalid, 7752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 7544 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:47:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2022-02-15 13:47:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 7923. [2022-02-15 13:47:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7923 states, 7922 states have (on average 3.52511991921232) internal successors, (27926), 7922 states have internal predecessors, (27926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 27926 transitions. [2022-02-15 13:47:20,416 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 27926 transitions. Word has length 47 [2022-02-15 13:47:20,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:20,417 INFO L470 AbstractCegarLoop]: Abstraction has 7923 states and 27926 transitions. [2022-02-15 13:47:20,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:20,417 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 27926 transitions. [2022-02-15 13:47:20,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:20,430 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:20,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:20,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-02-15 13:47:20,430 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:20,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:20,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1714588123, now seen corresponding path program 175 times [2022-02-15 13:47:20,430 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:20,430 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688297295] [2022-02-15 13:47:20,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:20,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:20,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:20,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688297295] [2022-02-15 13:47:20,671 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688297295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:20,671 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:20,671 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:20,671 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359265768] [2022-02-15 13:47:20,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:20,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:20,671 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:20,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:20,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:20,671 INFO L87 Difference]: Start difference. First operand 7923 states and 27926 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:23,106 INFO L93 Difference]: Finished difference Result 12451 states and 43758 transitions. [2022-02-15 13:47:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 13:47:23,106 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:23,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:23,134 INFO L225 Difference]: With dead ends: 12451 [2022-02-15 13:47:23,134 INFO L226 Difference]: Without dead ends: 12324 [2022-02-15 13:47:23,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=565, Invalid=5915, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 13:47:23,135 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 762 mSDsluCounter, 4662 mSDsCounter, 0 mSdLazyCounter, 5440 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 5440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:23,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 3270 Invalid, 5537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 5440 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:47:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12324 states. [2022-02-15 13:47:23,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12324 to 7939. [2022-02-15 13:47:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7939 states, 7938 states have (on average 3.5230536659108087) internal successors, (27966), 7938 states have internal predecessors, (27966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 27966 transitions. [2022-02-15 13:47:23,293 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 27966 transitions. Word has length 47 [2022-02-15 13:47:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:23,293 INFO L470 AbstractCegarLoop]: Abstraction has 7939 states and 27966 transitions. [2022-02-15 13:47:23,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 27966 transitions. [2022-02-15 13:47:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:23,307 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:23,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:23,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-02-15 13:47:23,307 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:23,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash -753007913, now seen corresponding path program 176 times [2022-02-15 13:47:23,307 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:23,307 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974321369] [2022-02-15 13:47:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:23,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:23,520 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:23,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974321369] [2022-02-15 13:47:23,521 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974321369] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:23,521 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:23,521 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:47:23,521 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135727798] [2022-02-15 13:47:23,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:23,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:47:23,521 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:23,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:47:23,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:47:23,521 INFO L87 Difference]: Start difference. First operand 7939 states and 27966 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:24,972 INFO L93 Difference]: Finished difference Result 10213 states and 35694 transitions. [2022-02-15 13:47:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-02-15 13:47:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:24,995 INFO L225 Difference]: With dead ends: 10213 [2022-02-15 13:47:24,995 INFO L226 Difference]: Without dead ends: 10116 [2022-02-15 13:47:24,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=331, Invalid=3209, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:47:24,995 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 553 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 3721 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 1966 SdHoareTripleChecker+Invalid, 3776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:24,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [553 Valid, 1966 Invalid, 3776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3721 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:47:25,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2022-02-15 13:47:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 7945. [2022-02-15 13:47:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 7944 states have (on average 3.522280966767372) internal successors, (27981), 7944 states have internal predecessors, (27981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:25,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27981 transitions. [2022-02-15 13:47:25,140 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27981 transitions. Word has length 47 [2022-02-15 13:47:25,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:25,140 INFO L470 AbstractCegarLoop]: Abstraction has 7945 states and 27981 transitions. [2022-02-15 13:47:25,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27981 transitions. [2022-02-15 13:47:25,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:25,153 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:25,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:25,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-02-15 13:47:25,153 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:25,153 INFO L85 PathProgramCache]: Analyzing trace with hash -750334087, now seen corresponding path program 177 times [2022-02-15 13:47:25,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:25,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596273247] [2022-02-15 13:47:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:25,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:25,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:25,323 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:25,323 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596273247] [2022-02-15 13:47:25,323 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596273247] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:25,323 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:25,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:25,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986531167] [2022-02-15 13:47:25,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:25,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:25,324 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:25,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:25,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:25,326 INFO L87 Difference]: Start difference. First operand 7945 states and 27981 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:27,772 INFO L93 Difference]: Finished difference Result 11804 states and 41393 transitions. [2022-02-15 13:47:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-02-15 13:47:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:27,799 INFO L225 Difference]: With dead ends: 11804 [2022-02-15 13:47:27,799 INFO L226 Difference]: Without dead ends: 11695 [2022-02-15 13:47:27,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=808, Invalid=7748, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:47:27,800 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 854 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 4931 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 4931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:27,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 2890 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 4931 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:47:27,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11695 states. [2022-02-15 13:47:27,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11695 to 7927. [2022-02-15 13:47:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7927 states, 7926 states have (on average 3.52409790562705) internal successors, (27932), 7926 states have internal predecessors, (27932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:27,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27932 transitions. [2022-02-15 13:47:27,950 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27932 transitions. Word has length 47 [2022-02-15 13:47:27,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:27,950 INFO L470 AbstractCegarLoop]: Abstraction has 7927 states and 27932 transitions. [2022-02-15 13:47:27,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:27,950 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27932 transitions. [2022-02-15 13:47:27,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:27,963 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:27,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:27,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-02-15 13:47:27,963 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2058805759, now seen corresponding path program 178 times [2022-02-15 13:47:27,964 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:27,964 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004708926] [2022-02-15 13:47:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:27,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:28,134 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:28,134 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004708926] [2022-02-15 13:47:28,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004708926] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:28,134 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:28,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:28,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999917992] [2022-02-15 13:47:28,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:28,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:28,134 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:28,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:28,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:28,135 INFO L87 Difference]: Start difference. First operand 7927 states and 27932 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:30,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:30,142 INFO L93 Difference]: Finished difference Result 10895 states and 37971 transitions. [2022-02-15 13:47:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 13:47:30,143 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:30,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:30,165 INFO L225 Difference]: With dead ends: 10895 [2022-02-15 13:47:30,165 INFO L226 Difference]: Without dead ends: 10774 [2022-02-15 13:47:30,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=487, Invalid=5063, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 13:47:30,166 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 747 mSDsluCounter, 3891 mSDsCounter, 0 mSdLazyCounter, 4674 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 4771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:30,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 2577 Invalid, 4771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4674 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:47:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2022-02-15 13:47:30,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 7945. [2022-02-15 13:47:30,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7945 states, 7944 states have (on average 3.5237915407854983) internal successors, (27993), 7944 states have internal predecessors, (27993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27993 transitions. [2022-02-15 13:47:30,309 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27993 transitions. Word has length 47 [2022-02-15 13:47:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:30,309 INFO L470 AbstractCegarLoop]: Abstraction has 7945 states and 27993 transitions. [2022-02-15 13:47:30,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27993 transitions. [2022-02-15 13:47:30,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:30,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:30,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:30,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-02-15 13:47:30,323 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash -487384323, now seen corresponding path program 179 times [2022-02-15 13:47:30,323 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:30,323 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225082570] [2022-02-15 13:47:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:30,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:30,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:30,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:30,496 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225082570] [2022-02-15 13:47:30,496 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225082570] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:30,496 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:30,496 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:30,496 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901866246] [2022-02-15 13:47:30,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:30,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:30,496 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:30,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:30,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:30,497 INFO L87 Difference]: Start difference. First operand 7945 states and 27993 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:34,013 INFO L93 Difference]: Finished difference Result 14844 states and 52008 transitions. [2022-02-15 13:47:34,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-15 13:47:34,013 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:34,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:34,051 INFO L225 Difference]: With dead ends: 14844 [2022-02-15 13:47:34,051 INFO L226 Difference]: Without dead ends: 14749 [2022-02-15 13:47:34,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5883 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1227, Invalid=15029, Unknown=0, NotChecked=0, Total=16256 [2022-02-15 13:47:34,053 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 999 mSDsluCounter, 5265 mSDsCounter, 0 mSdLazyCounter, 6581 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 3974 SdHoareTripleChecker+Invalid, 6773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 6581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:34,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 3974 Invalid, 6773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 6581 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:47:34,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14749 states. [2022-02-15 13:47:34,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14749 to 7949. [2022-02-15 13:47:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7949 states, 7948 states have (on average 3.523779567186714) internal successors, (28007), 7948 states have internal predecessors, (28007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:34,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 28007 transitions. [2022-02-15 13:47:34,323 INFO L78 Accepts]: Start accepts. Automaton has 7949 states and 28007 transitions. Word has length 47 [2022-02-15 13:47:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:34,324 INFO L470 AbstractCegarLoop]: Abstraction has 7949 states and 28007 transitions. [2022-02-15 13:47:34,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7949 states and 28007 transitions. [2022-02-15 13:47:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:34,341 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:34,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:34,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-02-15 13:47:34,341 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -188492645, now seen corresponding path program 180 times [2022-02-15 13:47:34,342 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:34,342 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074990142] [2022-02-15 13:47:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:34,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:34,534 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:34,534 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074990142] [2022-02-15 13:47:34,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074990142] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:34,534 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:34,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:47:34,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819189731] [2022-02-15 13:47:34,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:34,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:47:34,534 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:47:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:47:34,535 INFO L87 Difference]: Start difference. First operand 7949 states and 28007 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:35,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:35,972 INFO L93 Difference]: Finished difference Result 10225 states and 35738 transitions. [2022-02-15 13:47:35,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 13:47:35,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:35,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:35,997 INFO L225 Difference]: With dead ends: 10225 [2022-02-15 13:47:35,997 INFO L226 Difference]: Without dead ends: 10128 [2022-02-15 13:47:35,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:47:35,997 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 563 mSDsluCounter, 2973 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:35,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [563 Valid, 1901 Invalid, 3696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:47:36,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2022-02-15 13:47:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 7957. [2022-02-15 13:47:36,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7957 states, 7956 states have (on average 3.5224987430869783) internal successors, (28025), 7956 states have internal predecessors, (28025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:36,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 28025 transitions. [2022-02-15 13:47:36,162 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 28025 transitions. Word has length 47 [2022-02-15 13:47:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:36,162 INFO L470 AbstractCegarLoop]: Abstraction has 7957 states and 28025 transitions. [2022-02-15 13:47:36,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 28025 transitions. [2022-02-15 13:47:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:36,179 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:36,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:36,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-02-15 13:47:36,179 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1913913155, now seen corresponding path program 181 times [2022-02-15 13:47:36,180 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:36,180 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397707655] [2022-02-15 13:47:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:36,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:36,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:36,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:36,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:36,369 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397707655] [2022-02-15 13:47:36,369 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397707655] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:36,369 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:36,369 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:36,369 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683295863] [2022-02-15 13:47:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:36,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:36,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:36,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:36,370 INFO L87 Difference]: Start difference. First operand 7957 states and 28025 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:41,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:41,298 INFO L93 Difference]: Finished difference Result 15322 states and 53658 transitions. [2022-02-15 13:47:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2022-02-15 13:47:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:41,336 INFO L225 Difference]: With dead ends: 15322 [2022-02-15 13:47:41,336 INFO L226 Difference]: Without dead ends: 15092 [2022-02-15 13:47:41,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6884 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1516, Invalid=17116, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 13:47:41,339 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 1225 mSDsluCounter, 6018 mSDsCounter, 0 mSdLazyCounter, 6715 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 3942 SdHoareTripleChecker+Invalid, 7010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 6715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:41,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 3942 Invalid, 7010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 6715 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:47:41,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2022-02-15 13:47:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 8232. [2022-02-15 13:47:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8232 states, 8231 states have (on average 3.5352934029887013) internal successors, (29099), 8231 states have internal predecessors, (29099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:41,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 29099 transitions. [2022-02-15 13:47:41,545 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 29099 transitions. Word has length 47 [2022-02-15 13:47:41,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:41,546 INFO L470 AbstractCegarLoop]: Abstraction has 8232 states and 29099 transitions. [2022-02-15 13:47:41,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 29099 transitions. [2022-02-15 13:47:41,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:41,560 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:41,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:41,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-02-15 13:47:41,560 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:41,561 INFO L85 PathProgramCache]: Analyzing trace with hash 156697947, now seen corresponding path program 182 times [2022-02-15 13:47:41,561 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:41,561 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422110346] [2022-02-15 13:47:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:41,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:41,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:41,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422110346] [2022-02-15 13:47:41,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422110346] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:41,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:41,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:47:41,725 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297029945] [2022-02-15 13:47:41,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:41,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:47:41,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:41,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:47:41,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:47:41,726 INFO L87 Difference]: Start difference. First operand 8232 states and 29099 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:43,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:43,347 INFO L93 Difference]: Finished difference Result 10831 states and 38019 transitions. [2022-02-15 13:47:43,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:47:43,347 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:43,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:43,371 INFO L225 Difference]: With dead ends: 10831 [2022-02-15 13:47:43,372 INFO L226 Difference]: Without dead ends: 10694 [2022-02-15 13:47:43,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=411, Invalid=4011, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 13:47:43,372 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 629 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 3828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:43,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 2189 Invalid, 3828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:47:43,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2022-02-15 13:47:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 8250. [2022-02-15 13:47:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8250 states, 8249 states have (on average 3.5330343071887502) internal successors, (29144), 8249 states have internal predecessors, (29144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29144 transitions. [2022-02-15 13:47:43,514 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29144 transitions. Word has length 47 [2022-02-15 13:47:43,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:43,515 INFO L470 AbstractCegarLoop]: Abstraction has 8250 states and 29144 transitions. [2022-02-15 13:47:43,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:43,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29144 transitions. [2022-02-15 13:47:43,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:43,528 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:43,528 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:43,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-02-15 13:47:43,529 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:43,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:43,529 INFO L85 PathProgramCache]: Analyzing trace with hash -652242661, now seen corresponding path program 183 times [2022-02-15 13:47:43,529 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:43,529 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826788319] [2022-02-15 13:47:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:43,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:43,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:43,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826788319] [2022-02-15 13:47:43,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826788319] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:43,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:43,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:43,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131708371] [2022-02-15 13:47:43,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:43,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:43,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:43,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:43,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:43,697 INFO L87 Difference]: Start difference. First operand 8250 states and 29144 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:45,449 INFO L93 Difference]: Finished difference Result 10815 states and 37951 transitions. [2022-02-15 13:47:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-02-15 13:47:45,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:45,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:45,474 INFO L225 Difference]: With dead ends: 10815 [2022-02-15 13:47:45,474 INFO L226 Difference]: Without dead ends: 10670 [2022-02-15 13:47:45,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=427, Invalid=4403, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 13:47:45,475 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 694 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:45,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 2449 Invalid, 4417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:47:45,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2022-02-15 13:47:45,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 8250. [2022-02-15 13:47:45,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8250 states, 8249 states have (on average 3.532306946296521) internal successors, (29138), 8249 states have internal predecessors, (29138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29138 transitions. [2022-02-15 13:47:45,629 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29138 transitions. Word has length 47 [2022-02-15 13:47:45,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:45,629 INFO L470 AbstractCegarLoop]: Abstraction has 8250 states and 29138 transitions. [2022-02-15 13:47:45,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:45,629 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29138 transitions. [2022-02-15 13:47:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:45,643 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:45,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:45,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-02-15 13:47:45,643 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:45,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:45,643 INFO L85 PathProgramCache]: Analyzing trace with hash 247653117, now seen corresponding path program 184 times [2022-02-15 13:47:45,643 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:45,643 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368658454] [2022-02-15 13:47:45,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:45,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:45,880 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:45,880 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368658454] [2022-02-15 13:47:45,880 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368658454] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:45,880 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:45,880 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:45,880 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832109619] [2022-02-15 13:47:45,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:45,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:45,880 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:45,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:45,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:45,881 INFO L87 Difference]: Start difference. First operand 8250 states and 29138 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:50,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:50,583 INFO L93 Difference]: Finished difference Result 15896 states and 56270 transitions. [2022-02-15 13:47:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-02-15 13:47:50,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:50,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:50,623 INFO L225 Difference]: With dead ends: 15896 [2022-02-15 13:47:50,623 INFO L226 Difference]: Without dead ends: 15759 [2022-02-15 13:47:50,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6381 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1245, Invalid=16047, Unknown=0, NotChecked=0, Total=17292 [2022-02-15 13:47:50,625 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 1134 mSDsluCounter, 5275 mSDsCounter, 0 mSdLazyCounter, 6922 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 7177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 6922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:50,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 3884 Invalid, 7177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 6922 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:47:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2022-02-15 13:47:50,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 8399. [2022-02-15 13:47:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8399 states, 8398 states have (on average 3.5382233865206003) internal successors, (29714), 8398 states have internal predecessors, (29714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 29714 transitions. [2022-02-15 13:47:50,820 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 29714 transitions. Word has length 47 [2022-02-15 13:47:50,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:50,821 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 29714 transitions. [2022-02-15 13:47:50,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 29714 transitions. [2022-02-15 13:47:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:50,836 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:50,836 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:50,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-02-15 13:47:50,836 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:50,836 INFO L85 PathProgramCache]: Analyzing trace with hash -602998791, now seen corresponding path program 185 times [2022-02-15 13:47:50,836 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:50,836 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259626382] [2022-02-15 13:47:50,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:50,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:51,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:51,010 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259626382] [2022-02-15 13:47:51,010 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259626382] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:51,010 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:51,010 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:51,010 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988447738] [2022-02-15 13:47:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:51,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:51,010 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:51,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:51,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:51,010 INFO L87 Difference]: Start difference. First operand 8399 states and 29714 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:55,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:55,173 INFO L93 Difference]: Finished difference Result 16821 states and 59650 transitions. [2022-02-15 13:47:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-02-15 13:47:55,173 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:55,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:55,213 INFO L225 Difference]: With dead ends: 16821 [2022-02-15 13:47:55,213 INFO L226 Difference]: Without dead ends: 16561 [2022-02-15 13:47:55,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7651 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1423, Invalid=18883, Unknown=0, NotChecked=0, Total=20306 [2022-02-15 13:47:55,216 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 1149 mSDsluCounter, 5798 mSDsCounter, 0 mSdLazyCounter, 7603 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 7857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 7603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:55,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 4267 Invalid, 7857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 7603 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:47:55,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16561 states. [2022-02-15 13:47:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16561 to 8241. [2022-02-15 13:47:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 3.533252427184466) internal successors, (29114), 8240 states have internal predecessors, (29114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2022-02-15 13:47:55,418 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2022-02-15 13:47:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:55,418 INFO L470 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2022-02-15 13:47:55,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2022-02-15 13:47:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:55,433 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:55,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:55,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-02-15 13:47:55,433 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:55,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1077602655, now seen corresponding path program 186 times [2022-02-15 13:47:55,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:55,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284777234] [2022-02-15 13:47:55,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:55,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:55,605 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:55,605 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284777234] [2022-02-15 13:47:55,605 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284777234] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:55,606 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:55,606 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:55,606 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907718841] [2022-02-15 13:47:55,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:55,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:55,606 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:55,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:55,606 INFO L87 Difference]: Start difference. First operand 8241 states and 29114 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:47:57,723 INFO L93 Difference]: Finished difference Result 11022 states and 38552 transitions. [2022-02-15 13:47:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 13:47:57,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:47:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:47:57,749 INFO L225 Difference]: With dead ends: 11022 [2022-02-15 13:47:57,749 INFO L226 Difference]: Without dead ends: 10901 [2022-02-15 13:47:57,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=477, Invalid=5073, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 13:47:57,750 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 735 mSDsluCounter, 3625 mSDsCounter, 0 mSdLazyCounter, 4406 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 4508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:47:57,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 2485 Invalid, 4508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4406 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:47:57,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2022-02-15 13:47:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 8241. [2022-02-15 13:47:57,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8241 states, 8240 states have (on average 3.533252427184466) internal successors, (29114), 8240 states have internal predecessors, (29114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:57,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2022-02-15 13:47:57,917 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2022-02-15 13:47:57,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:47:57,917 INFO L470 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2022-02-15 13:47:57,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:47:57,918 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2022-02-15 13:47:57,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:47:57,932 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:47:57,932 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:47:57,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-02-15 13:47:57,932 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:47:57,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:47:57,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1645943205, now seen corresponding path program 187 times [2022-02-15 13:47:57,933 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:47:57,933 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957096364] [2022-02-15 13:47:57,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:47:57,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:47:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:47:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:47:58,151 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:47:58,151 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957096364] [2022-02-15 13:47:58,151 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957096364] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:47:58,151 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:47:58,151 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:47:58,151 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504710993] [2022-02-15 13:47:58,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:47:58,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:47:58,152 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:47:58,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:47:58,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:47:58,152 INFO L87 Difference]: Start difference. First operand 8241 states and 29114 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:03,148 INFO L93 Difference]: Finished difference Result 15203 states and 53548 transitions. [2022-02-15 13:48:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-02-15 13:48:03,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:03,184 INFO L225 Difference]: With dead ends: 15203 [2022-02-15 13:48:03,184 INFO L226 Difference]: Without dead ends: 14959 [2022-02-15 13:48:03,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6543 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1297, Invalid=16525, Unknown=0, NotChecked=0, Total=17822 [2022-02-15 13:48:03,185 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 1019 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 6782 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 4284 SdHoareTripleChecker+Invalid, 6992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 6782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:03,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 4284 Invalid, 6992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 6782 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 13:48:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2022-02-15 13:48:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 8223. [2022-02-15 13:48:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8223 states, 8222 states have (on average 3.534784723911457) internal successors, (29063), 8222 states have internal predecessors, (29063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:03,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 29063 transitions. [2022-02-15 13:48:03,365 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 29063 transitions. Word has length 47 [2022-02-15 13:48:03,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:03,365 INFO L470 AbstractCegarLoop]: Abstraction has 8223 states and 29063 transitions. [2022-02-15 13:48:03,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 29063 transitions. [2022-02-15 13:48:03,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:03,379 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:03,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:03,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-02-15 13:48:03,379 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:03,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:03,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1347051527, now seen corresponding path program 188 times [2022-02-15 13:48:03,379 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:03,379 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876472198] [2022-02-15 13:48:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:03,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:03,619 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:03,619 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876472198] [2022-02-15 13:48:03,619 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876472198] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:03,620 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:03,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:48:03,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541253765] [2022-02-15 13:48:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:03,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:48:03,620 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:03,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:48:03,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:48:03,620 INFO L87 Difference]: Start difference. First operand 8223 states and 29063 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:05,654 INFO L93 Difference]: Finished difference Result 10368 states and 36385 transitions. [2022-02-15 13:48:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-02-15 13:48:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:05,678 INFO L225 Difference]: With dead ends: 10368 [2022-02-15 13:48:05,678 INFO L226 Difference]: Without dead ends: 10271 [2022-02-15 13:48:05,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=340, Invalid=3320, Unknown=0, NotChecked=0, Total=3660 [2022-02-15 13:48:05,679 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 521 mSDsluCounter, 2867 mSDsCounter, 0 mSdLazyCounter, 3441 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1879 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:05,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 1879 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3441 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:48:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2022-02-15 13:48:05,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 8237. [2022-02-15 13:48:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8237 states, 8236 states have (on average 3.5320543953375423) internal successors, (29090), 8236 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:05,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 29090 transitions. [2022-02-15 13:48:05,825 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 29090 transitions. Word has length 47 [2022-02-15 13:48:05,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:05,825 INFO L470 AbstractCegarLoop]: Abstraction has 8237 states and 29090 transitions. [2022-02-15 13:48:05,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:05,825 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 29090 transitions. [2022-02-15 13:48:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:05,838 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:05,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:05,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-02-15 13:48:05,839 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:05,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1222495259, now seen corresponding path program 189 times [2022-02-15 13:48:05,839 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:05,839 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773144662] [2022-02-15 13:48:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:05,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:06,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:06,091 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:06,091 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773144662] [2022-02-15 13:48:06,091 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773144662] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:06,092 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:06,092 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:06,092 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819867515] [2022-02-15 13:48:06,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:06,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:06,092 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:06,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:06,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:06,092 INFO L87 Difference]: Start difference. First operand 8237 states and 29090 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:10,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:10,523 INFO L93 Difference]: Finished difference Result 15369 states and 53940 transitions. [2022-02-15 13:48:10,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-15 13:48:10,523 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:10,559 INFO L225 Difference]: With dead ends: 15369 [2022-02-15 13:48:10,559 INFO L226 Difference]: Without dead ends: 14901 [2022-02-15 13:48:10,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5662 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1290, Invalid=14460, Unknown=0, NotChecked=0, Total=15750 [2022-02-15 13:48:10,561 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 1177 mSDsluCounter, 6052 mSDsCounter, 0 mSdLazyCounter, 6899 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 4170 SdHoareTripleChecker+Invalid, 7176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 6899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:10,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1177 Valid, 4170 Invalid, 7176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 6899 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:48:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2022-02-15 13:48:10,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 8363. [2022-02-15 13:48:10,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8363 states, 8362 states have (on average 3.5418560153073426) internal successors, (29617), 8362 states have internal predecessors, (29617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 29617 transitions. [2022-02-15 13:48:10,754 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 29617 transitions. Word has length 47 [2022-02-15 13:48:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:10,755 INFO L470 AbstractCegarLoop]: Abstraction has 8363 states and 29617 transitions. [2022-02-15 13:48:10,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 29617 transitions. [2022-02-15 13:48:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:10,769 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:10,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:10,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-02-15 13:48:10,769 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:10,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:10,770 INFO L85 PathProgramCache]: Analyzing trace with hash 135347419, now seen corresponding path program 190 times [2022-02-15 13:48:10,770 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:10,770 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095554094] [2022-02-15 13:48:10,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:10,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:10,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:10,944 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:10,944 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095554094] [2022-02-15 13:48:10,944 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095554094] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:10,944 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:10,944 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:10,945 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126708726] [2022-02-15 13:48:10,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:10,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:10,945 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:10,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:10,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:10,945 INFO L87 Difference]: Start difference. First operand 8363 states and 29617 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:13,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:13,148 INFO L93 Difference]: Finished difference Result 12940 states and 45590 transitions. [2022-02-15 13:48:13,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 13:48:13,148 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:13,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:13,179 INFO L225 Difference]: With dead ends: 12940 [2022-02-15 13:48:13,179 INFO L226 Difference]: Without dead ends: 12813 [2022-02-15 13:48:13,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=542, Invalid=5620, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 13:48:13,180 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 739 mSDsluCounter, 4449 mSDsCounter, 0 mSdLazyCounter, 5270 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 5270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:13,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 2962 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 5270 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:48:13,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2022-02-15 13:48:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 8395. [2022-02-15 13:48:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 3.5395520609959497) internal successors, (29711), 8394 states have internal predecessors, (29711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29711 transitions. [2022-02-15 13:48:13,352 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29711 transitions. Word has length 47 [2022-02-15 13:48:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:13,352 INFO L470 AbstractCegarLoop]: Abstraction has 8395 states and 29711 transitions. [2022-02-15 13:48:13,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:13,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29711 transitions. [2022-02-15 13:48:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:13,366 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:13,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:13,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-02-15 13:48:13,367 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:13,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:13,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1235849987, now seen corresponding path program 191 times [2022-02-15 13:48:13,367 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:13,367 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279532528] [2022-02-15 13:48:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:13,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:13,543 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:13,543 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279532528] [2022-02-15 13:48:13,543 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279532528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:13,543 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:13,543 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:13,543 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966944951] [2022-02-15 13:48:13,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:13,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:13,544 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:13,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:13,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:13,544 INFO L87 Difference]: Start difference. First operand 8395 states and 29711 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:15,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:15,510 INFO L93 Difference]: Finished difference Result 12641 states and 44540 transitions. [2022-02-15 13:48:15,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 13:48:15,511 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:15,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:15,585 INFO L225 Difference]: With dead ends: 12641 [2022-02-15 13:48:15,585 INFO L226 Difference]: Without dead ends: 12541 [2022-02-15 13:48:15,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=494, Invalid=4908, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 13:48:15,585 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 783 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 4638 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 4638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:15,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 2801 Invalid, 4747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 4638 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:48:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2022-02-15 13:48:15,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 8422. [2022-02-15 13:48:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8422 states, 8421 states have (on average 3.536040850255314) internal successors, (29777), 8421 states have internal predecessors, (29777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 29777 transitions. [2022-02-15 13:48:15,740 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 29777 transitions. Word has length 47 [2022-02-15 13:48:15,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:15,740 INFO L470 AbstractCegarLoop]: Abstraction has 8422 states and 29777 transitions. [2022-02-15 13:48:15,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 29777 transitions. [2022-02-15 13:48:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:15,754 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:15,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:15,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-02-15 13:48:15,754 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1624049819, now seen corresponding path program 192 times [2022-02-15 13:48:15,755 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:15,755 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409477353] [2022-02-15 13:48:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:15,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:15,936 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:15,936 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409477353] [2022-02-15 13:48:15,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409477353] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:15,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:15,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:15,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974668120] [2022-02-15 13:48:15,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:15,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:15,936 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:15,937 INFO L87 Difference]: Start difference. First operand 8422 states and 29777 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:19,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:19,507 INFO L93 Difference]: Finished difference Result 14137 states and 49621 transitions. [2022-02-15 13:48:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 13:48:19,507 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:19,543 INFO L225 Difference]: With dead ends: 14137 [2022-02-15 13:48:19,543 INFO L226 Difference]: Without dead ends: 14019 [2022-02-15 13:48:19,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3527 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=879, Invalid=9627, Unknown=0, NotChecked=0, Total=10506 [2022-02-15 13:48:19,545 INFO L933 BasicCegarLoop]: 317 mSDtfsCounter, 965 mSDsluCounter, 4971 mSDsCounter, 0 mSdLazyCounter, 5759 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 3569 SdHoareTripleChecker+Invalid, 5939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 5759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:19,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 3569 Invalid, 5939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 5759 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:48:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14019 states. [2022-02-15 13:48:19,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14019 to 8395. [2022-02-15 13:48:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8395 states, 8394 states have (on average 3.5390755301405767) internal successors, (29707), 8394 states have internal predecessors, (29707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:19,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29707 transitions. [2022-02-15 13:48:19,882 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29707 transitions. Word has length 47 [2022-02-15 13:48:19,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:19,883 INFO L470 AbstractCegarLoop]: Abstraction has 8395 states and 29707 transitions. [2022-02-15 13:48:19,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:19,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29707 transitions. [2022-02-15 13:48:19,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:19,898 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:19,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:19,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-02-15 13:48:19,899 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:19,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:19,899 INFO L85 PathProgramCache]: Analyzing trace with hash -2113051135, now seen corresponding path program 193 times [2022-02-15 13:48:19,899 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:19,900 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360328396] [2022-02-15 13:48:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:19,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:20,187 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:20,187 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360328396] [2022-02-15 13:48:20,187 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360328396] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:20,187 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:20,187 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:20,187 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968110564] [2022-02-15 13:48:20,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:20,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:20,188 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:20,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:20,188 INFO L87 Difference]: Start difference. First operand 8395 states and 29707 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:24,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:24,107 INFO L93 Difference]: Finished difference Result 15417 states and 54397 transitions. [2022-02-15 13:48:24,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-02-15 13:48:24,107 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:24,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:24,144 INFO L225 Difference]: With dead ends: 15417 [2022-02-15 13:48:24,144 INFO L226 Difference]: Without dead ends: 15312 [2022-02-15 13:48:24,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=843, Invalid=10077, Unknown=0, NotChecked=0, Total=10920 [2022-02-15 13:48:24,146 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1018 mSDsluCounter, 5314 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 3785 SdHoareTripleChecker+Invalid, 6229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:24,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 3785 Invalid, 6229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 6004 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:48:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2022-02-15 13:48:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 8409. [2022-02-15 13:48:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8408 states have (on average 3.538415794481446) internal successors, (29751), 8408 states have internal predecessors, (29751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2022-02-15 13:48:24,332 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2022-02-15 13:48:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:24,332 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2022-02-15 13:48:24,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:24,332 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2022-02-15 13:48:24,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:24,346 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:24,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:24,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-02-15 13:48:24,346 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:24,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:24,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1659983361, now seen corresponding path program 194 times [2022-02-15 13:48:24,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:24,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586999462] [2022-02-15 13:48:24,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:24,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:24,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:24,607 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:24,607 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586999462] [2022-02-15 13:48:24,607 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586999462] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:24,607 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:24,607 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:24,607 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503061924] [2022-02-15 13:48:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:24,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:24,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:24,608 INFO L87 Difference]: Start difference. First operand 8409 states and 29751 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:26,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:26,948 INFO L93 Difference]: Finished difference Result 12990 states and 45708 transitions. [2022-02-15 13:48:26,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 13:48:26,948 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:26,979 INFO L225 Difference]: With dead ends: 12990 [2022-02-15 13:48:26,979 INFO L226 Difference]: Without dead ends: 12884 [2022-02-15 13:48:26,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=540, Invalid=5010, Unknown=0, NotChecked=0, Total=5550 [2022-02-15 13:48:26,980 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 766 mSDsluCounter, 4209 mSDsCounter, 0 mSdLazyCounter, 4719 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 4830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 4719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:26,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 2855 Invalid, 4830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 4719 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:48:26,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2022-02-15 13:48:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 8409. [2022-02-15 13:48:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8409 states, 8408 states have (on average 3.538415794481446) internal successors, (29751), 8408 states have internal predecessors, (29751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2022-02-15 13:48:27,149 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2022-02-15 13:48:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:27,149 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2022-02-15 13:48:27,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2022-02-15 13:48:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:27,163 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:27,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:27,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-02-15 13:48:27,164 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1018217213, now seen corresponding path program 195 times [2022-02-15 13:48:27,164 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:27,164 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220275607] [2022-02-15 13:48:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:27,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:27,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:27,329 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:27,330 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220275607] [2022-02-15 13:48:27,330 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220275607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:27,330 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:27,330 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:27,330 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83067008] [2022-02-15 13:48:27,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:27,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:27,330 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:27,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:27,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:27,330 INFO L87 Difference]: Start difference. First operand 8409 states and 29751 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:31,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:31,961 INFO L93 Difference]: Finished difference Result 17836 states and 63151 transitions. [2022-02-15 13:48:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-02-15 13:48:31,961 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:31,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:32,008 INFO L225 Difference]: With dead ends: 17836 [2022-02-15 13:48:32,008 INFO L226 Difference]: Without dead ends: 17523 [2022-02-15 13:48:32,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6362 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1266, Invalid=16026, Unknown=0, NotChecked=0, Total=17292 [2022-02-15 13:48:32,010 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 1012 mSDsluCounter, 6323 mSDsCounter, 0 mSdLazyCounter, 7506 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 4474 SdHoareTripleChecker+Invalid, 7744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 7506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:32,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 4474 Invalid, 7744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 7506 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:48:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17523 states. [2022-02-15 13:48:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17523 to 8449. [2022-02-15 13:48:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8449 states, 8448 states have (on average 3.539535984848485) internal successors, (29902), 8448 states have internal predecessors, (29902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:32,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 29902 transitions. [2022-02-15 13:48:32,230 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 29902 transitions. Word has length 47 [2022-02-15 13:48:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:32,230 INFO L470 AbstractCegarLoop]: Abstraction has 8449 states and 29902 transitions. [2022-02-15 13:48:32,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 29902 transitions. [2022-02-15 13:48:32,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:32,245 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:32,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:32,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-02-15 13:48:32,245 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:32,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:32,245 INFO L85 PathProgramCache]: Analyzing trace with hash -434813029, now seen corresponding path program 196 times [2022-02-15 13:48:32,245 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:32,245 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866972525] [2022-02-15 13:48:32,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:32,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:32,504 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:32,504 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866972525] [2022-02-15 13:48:32,504 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866972525] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:32,504 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:32,504 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:32,504 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467003959] [2022-02-15 13:48:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:32,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:32,504 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:32,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:32,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:32,504 INFO L87 Difference]: Start difference. First operand 8449 states and 29902 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:35,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:35,399 INFO L93 Difference]: Finished difference Result 13381 states and 47204 transitions. [2022-02-15 13:48:35,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 13:48:35,399 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:35,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:35,436 INFO L225 Difference]: With dead ends: 13381 [2022-02-15 13:48:35,436 INFO L226 Difference]: Without dead ends: 13281 [2022-02-15 13:48:35,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=577, Invalid=5743, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 13:48:35,437 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 804 mSDsluCounter, 4498 mSDsCounter, 0 mSdLazyCounter, 5039 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 5157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:35,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3055 Invalid, 5157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5039 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:48:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2022-02-15 13:48:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 8458. [2022-02-15 13:48:35,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8458 states, 8457 states have (on average 3.5383705805841315) internal successors, (29924), 8457 states have internal predecessors, (29924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:35,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8458 states to 8458 states and 29924 transitions. [2022-02-15 13:48:35,637 INFO L78 Accepts]: Start accepts. Automaton has 8458 states and 29924 transitions. Word has length 47 [2022-02-15 13:48:35,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:35,638 INFO L470 AbstractCegarLoop]: Abstraction has 8458 states and 29924 transitions. [2022-02-15 13:48:35,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:35,638 INFO L276 IsEmpty]: Start isEmpty. Operand 8458 states and 29924 transitions. [2022-02-15 13:48:35,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:35,653 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:35,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:35,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-02-15 13:48:35,653 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash -500875587, now seen corresponding path program 197 times [2022-02-15 13:48:35,653 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:35,653 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884139479] [2022-02-15 13:48:35,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:35,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:35,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:35,891 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:35,891 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884139479] [2022-02-15 13:48:35,891 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884139479] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:35,891 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:35,891 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:35,892 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247989902] [2022-02-15 13:48:35,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:35,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:35,892 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:35,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:35,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:35,892 INFO L87 Difference]: Start difference. First operand 8458 states and 29924 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:39,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:39,199 INFO L93 Difference]: Finished difference Result 14984 states and 52632 transitions. [2022-02-15 13:48:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-02-15 13:48:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:39,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:39,240 INFO L225 Difference]: With dead ends: 14984 [2022-02-15 13:48:39,240 INFO L226 Difference]: Without dead ends: 14878 [2022-02-15 13:48:39,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4122 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=960, Invalid=11030, Unknown=0, NotChecked=0, Total=11990 [2022-02-15 13:48:39,242 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 1013 mSDsluCounter, 5515 mSDsCounter, 0 mSdLazyCounter, 6241 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 6445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 6241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:39,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1013 Valid, 3948 Invalid, 6445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 6241 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:48:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2022-02-15 13:48:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 8443. [2022-02-15 13:48:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8443 states, 8442 states have (on average 3.5405117270788913) internal successors, (29889), 8442 states have internal predecessors, (29889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 29889 transitions. [2022-02-15 13:48:39,503 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 29889 transitions. Word has length 47 [2022-02-15 13:48:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:39,503 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 29889 transitions. [2022-02-15 13:48:39,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:39,503 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 29889 transitions. [2022-02-15 13:48:39,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:39,519 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:39,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:39,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-02-15 13:48:39,519 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1163588059, now seen corresponding path program 198 times [2022-02-15 13:48:39,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:39,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399974308] [2022-02-15 13:48:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:39,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:39,730 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:39,730 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399974308] [2022-02-15 13:48:39,730 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399974308] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:39,730 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:39,730 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:39,730 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793574190] [2022-02-15 13:48:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:39,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:39,730 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:39,730 INFO L87 Difference]: Start difference. First operand 8443 states and 29889 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:41,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:41,785 INFO L93 Difference]: Finished difference Result 12146 states and 42729 transitions. [2022-02-15 13:48:41,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-02-15 13:48:41,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:41,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:41,814 INFO L225 Difference]: With dead ends: 12146 [2022-02-15 13:48:41,815 INFO L226 Difference]: Without dead ends: 12019 [2022-02-15 13:48:41,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=474, Invalid=4782, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 13:48:41,816 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 666 mSDsluCounter, 4238 mSDsCounter, 0 mSdLazyCounter, 5227 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2765 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 5227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:41,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 2765 Invalid, 5308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 5227 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:48:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2022-02-15 13:48:41,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 8465. [2022-02-15 13:48:41,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5388705103969755) internal successors, (29953), 8464 states have internal predecessors, (29953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:41,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29953 transitions. [2022-02-15 13:48:41,995 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29953 transitions. Word has length 47 [2022-02-15 13:48:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:41,995 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29953 transitions. [2022-02-15 13:48:41,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:41,995 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29953 transitions. [2022-02-15 13:48:42,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:42,010 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:42,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:42,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-02-15 13:48:42,010 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:42,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:42,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1304007977, now seen corresponding path program 199 times [2022-02-15 13:48:42,010 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:42,011 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313484295] [2022-02-15 13:48:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:42,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:42,176 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:42,176 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313484295] [2022-02-15 13:48:42,176 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313484295] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:42,176 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:42,176 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:42,176 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251457371] [2022-02-15 13:48:42,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:42,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:42,177 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:42,177 INFO L87 Difference]: Start difference. First operand 8465 states and 29953 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:43,919 INFO L93 Difference]: Finished difference Result 11529 states and 40297 transitions. [2022-02-15 13:48:43,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 13:48:43,919 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:43,946 INFO L225 Difference]: With dead ends: 11529 [2022-02-15 13:48:43,947 INFO L226 Difference]: Without dead ends: 11432 [2022-02-15 13:48:43,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=418, Invalid=4138, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 13:48:43,947 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 644 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 4206 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2320 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 4206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:43,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [644 Valid, 2320 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 4206 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:48:43,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2022-02-15 13:48:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 8483. [2022-02-15 13:48:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8483 states, 8482 states have (on average 3.536665880688517) internal successors, (29998), 8482 states have internal predecessors, (29998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8483 states to 8483 states and 29998 transitions. [2022-02-15 13:48:44,121 INFO L78 Accepts]: Start accepts. Automaton has 8483 states and 29998 transitions. Word has length 47 [2022-02-15 13:48:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:44,121 INFO L470 AbstractCegarLoop]: Abstraction has 8483 states and 29998 transitions. [2022-02-15 13:48:44,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:44,122 INFO L276 IsEmpty]: Start isEmpty. Operand 8483 states and 29998 transitions. [2022-02-15 13:48:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:44,135 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:44,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:44,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-02-15 13:48:44,136 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:44,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:44,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1301334151, now seen corresponding path program 200 times [2022-02-15 13:48:44,136 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:44,136 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594111577] [2022-02-15 13:48:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:44,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:44,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:44,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594111577] [2022-02-15 13:48:44,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594111577] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:44,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:44,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:44,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76243401] [2022-02-15 13:48:44,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:44,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:44,300 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:44,300 INFO L87 Difference]: Start difference. First operand 8483 states and 29998 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:46,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:46,801 INFO L93 Difference]: Finished difference Result 12913 states and 45328 transitions. [2022-02-15 13:48:46,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 13:48:46,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:46,834 INFO L225 Difference]: With dead ends: 12913 [2022-02-15 13:48:46,834 INFO L226 Difference]: Without dead ends: 12804 [2022-02-15 13:48:46,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2973 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=802, Invalid=8318, Unknown=0, NotChecked=0, Total=9120 [2022-02-15 13:48:46,836 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 918 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 5017 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 5179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 5017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:46,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2952 Invalid, 5179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 5017 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:48:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12804 states. [2022-02-15 13:48:47,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12804 to 8465. [2022-02-15 13:48:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5383979206049148) internal successors, (29949), 8464 states have internal predecessors, (29949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2022-02-15 13:48:47,057 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2022-02-15 13:48:47,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:47,057 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2022-02-15 13:48:47,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:47,058 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2022-02-15 13:48:47,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:47,072 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:47,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:47,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-02-15 13:48:47,072 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1685161473, now seen corresponding path program 201 times [2022-02-15 13:48:47,073 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:47,073 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009046425] [2022-02-15 13:48:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:47,249 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:47,249 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009046425] [2022-02-15 13:48:47,249 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009046425] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:47,249 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:47,249 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:47,249 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542193320] [2022-02-15 13:48:47,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:47,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:47,250 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:47,250 INFO L87 Difference]: Start difference. First operand 8465 states and 29949 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:49,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:49,292 INFO L93 Difference]: Finished difference Result 11858 states and 41518 transitions. [2022-02-15 13:48:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-02-15 13:48:49,292 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:49,321 INFO L225 Difference]: With dead ends: 11858 [2022-02-15 13:48:49,321 INFO L226 Difference]: Without dead ends: 11737 [2022-02-15 13:48:49,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=575, Invalid=5905, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 13:48:49,322 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 765 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 4720 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:49,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 2660 Invalid, 4827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4720 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:48:49,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2022-02-15 13:48:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8465. [2022-02-15 13:48:49,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8465 states, 8464 states have (on average 3.5383979206049148) internal successors, (29949), 8464 states have internal predecessors, (29949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2022-02-15 13:48:49,490 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2022-02-15 13:48:49,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:49,490 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2022-02-15 13:48:49,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2022-02-15 13:48:49,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:49,504 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:49,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:49,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-02-15 13:48:49,505 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:49,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1038384387, now seen corresponding path program 202 times [2022-02-15 13:48:49,505 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:49,505 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471860017] [2022-02-15 13:48:49,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:49,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:49,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:49,679 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:49,679 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471860017] [2022-02-15 13:48:49,679 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471860017] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:49,679 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:49,679 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:49,679 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747205532] [2022-02-15 13:48:49,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:49,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:49,680 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:49,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:49,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:49,680 INFO L87 Difference]: Start difference. First operand 8465 states and 29949 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:53,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:53,420 INFO L93 Difference]: Finished difference Result 16389 states and 57802 transitions. [2022-02-15 13:48:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-15 13:48:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:53,459 INFO L225 Difference]: With dead ends: 16389 [2022-02-15 13:48:53,459 INFO L226 Difference]: Without dead ends: 16064 [2022-02-15 13:48:53,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6699 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1229, Invalid=16861, Unknown=0, NotChecked=0, Total=18090 [2022-02-15 13:48:53,462 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 971 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 7463 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 4401 SdHoareTripleChecker+Invalid, 7669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 7463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:53,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 4401 Invalid, 7669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 7463 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:48:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16064 states. [2022-02-15 13:48:53,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16064 to 8454. [2022-02-15 13:48:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8454 states, 8453 states have (on average 3.5374423281675145) internal successors, (29902), 8453 states have internal predecessors, (29902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 29902 transitions. [2022-02-15 13:48:53,670 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 29902 transitions. Word has length 47 [2022-02-15 13:48:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:53,671 INFO L470 AbstractCegarLoop]: Abstraction has 8454 states and 29902 transitions. [2022-02-15 13:48:53,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:53,671 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 29902 transitions. [2022-02-15 13:48:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:53,685 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:53,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:53,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-02-15 13:48:53,686 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash -739492709, now seen corresponding path program 203 times [2022-02-15 13:48:53,686 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:53,686 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296688770] [2022-02-15 13:48:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:53,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:53,897 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:53,897 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296688770] [2022-02-15 13:48:53,897 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296688770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:53,897 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:53,897 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:53,897 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521797044] [2022-02-15 13:48:53,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:53,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:53,897 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:53,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:53,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:53,898 INFO L87 Difference]: Start difference. First operand 8454 states and 29902 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:56,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:48:56,236 INFO L93 Difference]: Finished difference Result 11514 states and 40231 transitions. [2022-02-15 13:48:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-02-15 13:48:56,236 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:48:56,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:48:56,267 INFO L225 Difference]: With dead ends: 11514 [2022-02-15 13:48:56,267 INFO L226 Difference]: Without dead ends: 11417 [2022-02-15 13:48:56,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=437, Invalid=4255, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:48:56,268 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 660 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 2298 SdHoareTripleChecker+Invalid, 4248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:48:56,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 2298 Invalid, 4248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:48:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2022-02-15 13:48:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 8462. [2022-02-15 13:48:56,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8462 states, 8461 states have (on average 3.536225032502068) internal successors, (29920), 8461 states have internal predecessors, (29920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:56,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 29920 transitions. [2022-02-15 13:48:56,485 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 29920 transitions. Word has length 47 [2022-02-15 13:48:56,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:48:56,485 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 29920 transitions. [2022-02-15 13:48:56,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:48:56,485 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 29920 transitions. [2022-02-15 13:48:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:48:56,501 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:48:56,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:48:56,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-02-15 13:48:56,501 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:48:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:48:56,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1830054077, now seen corresponding path program 204 times [2022-02-15 13:48:56,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:48:56,502 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384493225] [2022-02-15 13:48:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:48:56,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:48:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:48:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:48:56,758 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:48:56,758 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384493225] [2022-02-15 13:48:56,758 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384493225] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:48:56,758 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:48:56,758 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:48:56,758 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301490873] [2022-02-15 13:48:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:48:56,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:48:56,758 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:48:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:48:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:48:56,759 INFO L87 Difference]: Start difference. First operand 8462 states and 29920 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:02,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:02,527 INFO L93 Difference]: Finished difference Result 15670 states and 54941 transitions. [2022-02-15 13:49:02,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2022-02-15 13:49:02,527 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:02,570 INFO L225 Difference]: With dead ends: 15670 [2022-02-15 13:49:02,570 INFO L226 Difference]: Without dead ends: 15446 [2022-02-15 13:49:02,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6875 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1434, Invalid=17198, Unknown=0, NotChecked=0, Total=18632 [2022-02-15 13:49:02,571 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 1166 mSDsluCounter, 6181 mSDsCounter, 0 mSdLazyCounter, 7008 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1166 SdHoareTripleChecker+Valid, 4126 SdHoareTripleChecker+Invalid, 7313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 7008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:02,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1166 Valid, 4126 Invalid, 7313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 7008 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 13:49:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2022-02-15 13:49:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 8467. [2022-02-15 13:49:02,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8467 states, 8466 states have (on average 3.538743208126624) internal successors, (29959), 8466 states have internal predecessors, (29959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 29959 transitions. [2022-02-15 13:49:02,804 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 29959 transitions. Word has length 47 [2022-02-15 13:49:02,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:02,804 INFO L470 AbstractCegarLoop]: Abstraction has 8467 states and 29959 transitions. [2022-02-15 13:49:02,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 29959 transitions. [2022-02-15 13:49:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:02,820 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:02,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:02,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-02-15 13:49:02,820 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:02,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1211220069, now seen corresponding path program 205 times [2022-02-15 13:49:02,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:02,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136544900] [2022-02-15 13:49:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:02,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:03,078 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:03,078 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136544900] [2022-02-15 13:49:03,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136544900] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:03,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:03,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:03,079 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435350691] [2022-02-15 13:49:03,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:03,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:03,079 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:03,079 INFO L87 Difference]: Start difference. First operand 8467 states and 29959 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:06,263 INFO L93 Difference]: Finished difference Result 12382 states and 43733 transitions. [2022-02-15 13:49:06,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 13:49:06,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:06,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:06,294 INFO L225 Difference]: With dead ends: 12382 [2022-02-15 13:49:06,294 INFO L226 Difference]: Without dead ends: 12282 [2022-02-15 13:49:06,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 13:49:06,295 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 723 mSDsluCounter, 4513 mSDsCounter, 0 mSdLazyCounter, 5196 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 3137 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 5196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:06,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 3137 Invalid, 5301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 5196 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:49:06,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2022-02-15 13:49:06,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 8476. [2022-02-15 13:49:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.537581120943953) internal successors, (29981), 8475 states have internal predecessors, (29981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:06,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29981 transitions. [2022-02-15 13:49:06,582 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29981 transitions. Word has length 47 [2022-02-15 13:49:06,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:06,582 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29981 transitions. [2022-02-15 13:49:06,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:06,582 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29981 transitions. [2022-02-15 13:49:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:06,598 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:06,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:06,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-02-15 13:49:06,598 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1648679737, now seen corresponding path program 206 times [2022-02-15 13:49:06,598 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:06,599 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854396841] [2022-02-15 13:49:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:06,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:06,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:06,850 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:06,850 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854396841] [2022-02-15 13:49:06,850 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854396841] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:06,850 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:06,850 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:06,850 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464321553] [2022-02-15 13:49:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:06,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:06,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:06,851 INFO L87 Difference]: Start difference. First operand 8476 states and 29981 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:09,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:09,971 INFO L93 Difference]: Finished difference Result 12162 states and 42429 transitions. [2022-02-15 13:49:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 13:49:09,972 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:10,000 INFO L225 Difference]: With dead ends: 12162 [2022-02-15 13:49:10,001 INFO L226 Difference]: Without dead ends: 12044 [2022-02-15 13:49:10,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=562, Invalid=5444, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 13:49:10,002 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 763 mSDsluCounter, 4404 mSDsCounter, 0 mSdLazyCounter, 5165 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3089 SdHoareTripleChecker+Invalid, 5276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 5165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:10,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 3089 Invalid, 5276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 5165 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:49:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2022-02-15 13:49:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 8476. [2022-02-15 13:49:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.5368731563421827) internal successors, (29975), 8475 states have internal predecessors, (29975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29975 transitions. [2022-02-15 13:49:10,188 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29975 transitions. Word has length 47 [2022-02-15 13:49:10,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:10,189 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29975 transitions. [2022-02-15 13:49:10,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29975 transitions. [2022-02-15 13:49:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:10,203 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:10,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:10,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-02-15 13:49:10,204 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash -159438731, now seen corresponding path program 207 times [2022-02-15 13:49:10,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:10,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19662414] [2022-02-15 13:49:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:10,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:10,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:10,458 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:10,458 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19662414] [2022-02-15 13:49:10,458 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19662414] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:10,458 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:10,458 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:10,458 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113472386] [2022-02-15 13:49:10,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:10,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:10,459 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:10,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:10,459 INFO L87 Difference]: Start difference. First operand 8476 states and 29975 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:12,769 INFO L93 Difference]: Finished difference Result 11549 states and 40496 transitions. [2022-02-15 13:49:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:49:12,769 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:12,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:12,798 INFO L225 Difference]: With dead ends: 11549 [2022-02-15 13:49:12,798 INFO L226 Difference]: Without dead ends: 11452 [2022-02-15 13:49:12,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2022-02-15 13:49:12,799 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 633 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 4456 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2558 SdHoareTripleChecker+Invalid, 4527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 4456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:12,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 2558 Invalid, 4527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 4456 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:49:12,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2022-02-15 13:49:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 8482. [2022-02-15 13:49:12,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8482 states, 8481 states have (on average 3.5361396061785166) internal successors, (29990), 8481 states have internal predecessors, (29990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 29990 transitions. [2022-02-15 13:49:12,982 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 29990 transitions. Word has length 47 [2022-02-15 13:49:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:12,982 INFO L470 AbstractCegarLoop]: Abstraction has 8482 states and 29990 transitions. [2022-02-15 13:49:12,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 29990 transitions. [2022-02-15 13:49:12,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:12,998 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:12,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:12,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-02-15 13:49:12,998 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash -156764905, now seen corresponding path program 208 times [2022-02-15 13:49:12,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:12,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856509068] [2022-02-15 13:49:12,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:12,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:13,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:13,175 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:13,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856509068] [2022-02-15 13:49:13,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856509068] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:13,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:13,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:13,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595377652] [2022-02-15 13:49:13,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:13,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:13,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:13,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:13,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:13,175 INFO L87 Difference]: Start difference. First operand 8482 states and 29990 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:16,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:16,008 INFO L93 Difference]: Finished difference Result 12691 states and 44663 transitions. [2022-02-15 13:49:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 13:49:16,008 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:16,039 INFO L225 Difference]: With dead ends: 12691 [2022-02-15 13:49:16,039 INFO L226 Difference]: Without dead ends: 12582 [2022-02-15 13:49:16,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=624, Invalid=6182, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 13:49:16,040 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 838 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 5097 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 5097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:16,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 3073 Invalid, 5230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 5097 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:49:16,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2022-02-15 13:49:16,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 8464. [2022-02-15 13:49:16,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:16,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2022-02-15 13:49:16,248 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2022-02-15 13:49:16,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:16,248 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2022-02-15 13:49:16,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:16,248 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2022-02-15 13:49:16,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:16,262 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:16,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:16,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-02-15 13:49:16,262 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1413928267, now seen corresponding path program 209 times [2022-02-15 13:49:16,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:16,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187471885] [2022-02-15 13:49:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:16,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:16,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:16,503 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:16,503 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187471885] [2022-02-15 13:49:16,503 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187471885] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:16,503 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:16,503 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:49:16,503 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662875728] [2022-02-15 13:49:16,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:16,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:49:16,503 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:16,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:49:16,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:49:16,503 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:19,731 INFO L93 Difference]: Finished difference Result 13706 states and 48281 transitions. [2022-02-15 13:49:19,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 13:49:19,731 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:19,764 INFO L225 Difference]: With dead ends: 13706 [2022-02-15 13:49:19,764 INFO L226 Difference]: Without dead ends: 13606 [2022-02-15 13:49:19,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=787, Invalid=7769, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:49:19,765 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 806 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 5235 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 5375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 5235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:19,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 3279 Invalid, 5375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 5235 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:49:19,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13606 states. [2022-02-15 13:49:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13606 to 8464. [2022-02-15 13:49:19,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2022-02-15 13:49:19,944 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2022-02-15 13:49:19,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:19,944 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2022-02-15 13:49:19,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2022-02-15 13:49:19,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:19,959 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:19,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:19,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-02-15 13:49:19,959 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:19,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:19,959 INFO L85 PathProgramCache]: Analyzing trace with hash 961200919, now seen corresponding path program 210 times [2022-02-15 13:49:19,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:19,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331162604] [2022-02-15 13:49:19,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:19,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:20,206 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:20,206 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331162604] [2022-02-15 13:49:20,206 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331162604] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:20,206 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:20,206 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:49:20,206 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977825494] [2022-02-15 13:49:20,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:20,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:49:20,207 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:20,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:49:20,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:49:20,207 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:22,933 INFO L93 Difference]: Finished difference Result 13713 states and 48385 transitions. [2022-02-15 13:49:22,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2022-02-15 13:49:22,933 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:22,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:22,967 INFO L225 Difference]: With dead ends: 13713 [2022-02-15 13:49:22,967 INFO L226 Difference]: Without dead ends: 13607 [2022-02-15 13:49:22,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=914, Invalid=9186, Unknown=0, NotChecked=0, Total=10100 [2022-02-15 13:49:22,968 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 796 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 5307 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 5435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 5307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:22,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [796 Valid, 3405 Invalid, 5435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 5307 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:49:22,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13607 states. [2022-02-15 13:49:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13607 to 8464. [2022-02-15 13:49:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8464 states, 8463 states have (on average 3.5376344086021505) internal successors, (29939), 8463 states have internal predecessors, (29939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:23,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2022-02-15 13:49:23,145 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2022-02-15 13:49:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:23,145 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2022-02-15 13:49:23,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:23,145 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2022-02-15 13:49:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:23,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:23,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:23,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-02-15 13:49:23,159 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1155618519, now seen corresponding path program 211 times [2022-02-15 13:49:23,160 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:23,160 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115146132] [2022-02-15 13:49:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:23,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:23,325 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:23,325 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115146132] [2022-02-15 13:49:23,326 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115146132] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:23,326 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:23,326 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:23,326 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447533247] [2022-02-15 13:49:23,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:23,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:23,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:23,326 INFO L87 Difference]: Start difference. First operand 8464 states and 29939 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:26,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:26,235 INFO L93 Difference]: Finished difference Result 14165 states and 50052 transitions. [2022-02-15 13:49:26,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2022-02-15 13:49:26,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:26,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:26,268 INFO L225 Difference]: With dead ends: 14165 [2022-02-15 13:49:26,268 INFO L226 Difference]: Without dead ends: 14065 [2022-02-15 13:49:26,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=863, Invalid=9037, Unknown=0, NotChecked=0, Total=9900 [2022-02-15 13:49:26,269 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 937 mSDsluCounter, 5351 mSDsCounter, 0 mSdLazyCounter, 6217 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 3895 SdHoareTripleChecker+Invalid, 6386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 6217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:26,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [937 Valid, 3895 Invalid, 6386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 6217 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:49:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14065 states. [2022-02-15 13:49:26,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14065 to 8470. [2022-02-15 13:49:26,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 3.5376077458968003) internal successors, (29960), 8469 states have internal predecessors, (29960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29960 transitions. [2022-02-15 13:49:26,450 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29960 transitions. Word has length 47 [2022-02-15 13:49:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:26,451 INFO L470 AbstractCegarLoop]: Abstraction has 8470 states and 29960 transitions. [2022-02-15 13:49:26,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29960 transitions. [2022-02-15 13:49:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:26,465 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:26,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:26,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-02-15 13:49:26,465 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:26,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:26,466 INFO L85 PathProgramCache]: Analyzing trace with hash 612735575, now seen corresponding path program 212 times [2022-02-15 13:49:26,466 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:26,466 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426373232] [2022-02-15 13:49:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:26,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:26,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:26,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:26,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426373232] [2022-02-15 13:49:26,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426373232] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:26,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:26,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:26,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104376533] [2022-02-15 13:49:26,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:26,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:26,630 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:26,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:26,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:26,630 INFO L87 Difference]: Start difference. First operand 8470 states and 29960 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:29,063 INFO L93 Difference]: Finished difference Result 13188 states and 46503 transitions. [2022-02-15 13:49:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-02-15 13:49:29,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:29,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:29,099 INFO L225 Difference]: With dead ends: 13188 [2022-02-15 13:49:29,099 INFO L226 Difference]: Without dead ends: 13088 [2022-02-15 13:49:29,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=693, Invalid=6963, Unknown=0, NotChecked=0, Total=7656 [2022-02-15 13:49:29,099 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 833 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 5536 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 5668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 5536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:29,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 3434 Invalid, 5668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 5536 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:49:29,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2022-02-15 13:49:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 8470. [2022-02-15 13:49:29,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8470 states, 8469 states have (on average 3.53725351281143) internal successors, (29957), 8469 states have internal predecessors, (29957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:29,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29957 transitions. [2022-02-15 13:49:29,292 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29957 transitions. Word has length 47 [2022-02-15 13:49:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:29,293 INFO L470 AbstractCegarLoop]: Abstraction has 8470 states and 29957 transitions. [2022-02-15 13:49:29,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29957 transitions. [2022-02-15 13:49:29,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:29,308 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:29,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:29,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-02-15 13:49:29,309 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:29,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:29,309 INFO L85 PathProgramCache]: Analyzing trace with hash 895138361, now seen corresponding path program 213 times [2022-02-15 13:49:29,309 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:29,309 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179140067] [2022-02-15 13:49:29,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:29,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:29,475 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:29,475 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179140067] [2022-02-15 13:49:29,475 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179140067] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:29,475 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:29,475 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:29,475 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721551172] [2022-02-15 13:49:29,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:29,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:29,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:29,476 INFO L87 Difference]: Start difference. First operand 8470 states and 29957 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:32,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:32,446 INFO L93 Difference]: Finished difference Result 13839 states and 48810 transitions. [2022-02-15 13:49:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-02-15 13:49:32,446 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:32,479 INFO L225 Difference]: With dead ends: 13839 [2022-02-15 13:49:32,480 INFO L226 Difference]: Without dead ends: 13742 [2022-02-15 13:49:32,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=985, Invalid=10357, Unknown=0, NotChecked=0, Total=11342 [2022-02-15 13:49:32,481 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 889 mSDsluCounter, 5347 mSDsCounter, 0 mSdLazyCounter, 6159 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 6302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 6159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:32,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 3920 Invalid, 6302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 6159 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:49:32,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13742 states. [2022-02-15 13:49:32,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13742 to 8476. [2022-02-15 13:49:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 8475 states have (on average 3.536519174041298) internal successors, (29972), 8475 states have internal predecessors, (29972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29972 transitions. [2022-02-15 13:49:32,707 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29972 transitions. Word has length 47 [2022-02-15 13:49:32,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:32,707 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29972 transitions. [2022-02-15 13:49:32,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:32,707 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29972 transitions. [2022-02-15 13:49:32,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:32,722 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:32,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:32,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-02-15 13:49:32,722 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:32,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash 978026967, now seen corresponding path program 214 times [2022-02-15 13:49:32,722 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:32,722 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093557987] [2022-02-15 13:49:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:32,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:32,979 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:32,979 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093557987] [2022-02-15 13:49:32,979 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093557987] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:32,979 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:32,979 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:32,979 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454721822] [2022-02-15 13:49:32,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:32,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:32,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:32,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:32,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:32,980 INFO L87 Difference]: Start difference. First operand 8476 states and 29972 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:36,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:36,540 INFO L93 Difference]: Finished difference Result 13196 states and 46675 transitions. [2022-02-15 13:49:36,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 13:49:36,540 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:36,575 INFO L225 Difference]: With dead ends: 13196 [2022-02-15 13:49:36,575 INFO L226 Difference]: Without dead ends: 13090 [2022-02-15 13:49:36,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=778, Invalid=7594, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 13:49:36,576 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 811 mSDsluCounter, 4740 mSDsCounter, 0 mSdLazyCounter, 5654 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 5785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 5654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:36,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 3578 Invalid, 5785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 5654 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:49:36,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2022-02-15 13:49:36,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8461. [2022-02-15 13:49:36,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8461 states, 8460 states have (on average 3.5386524822695034) internal successors, (29937), 8460 states have internal predecessors, (29937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:36,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 29937 transitions. [2022-02-15 13:49:36,758 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 29937 transitions. Word has length 47 [2022-02-15 13:49:36,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:36,758 INFO L470 AbstractCegarLoop]: Abstraction has 8461 states and 29937 transitions. [2022-02-15 13:49:36,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:36,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 29937 transitions. [2022-02-15 13:49:36,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:36,774 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:36,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:36,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-02-15 13:49:36,774 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:36,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:36,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1916708353, now seen corresponding path program 215 times [2022-02-15 13:49:36,775 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:36,775 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323074089] [2022-02-15 13:49:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:36,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:36,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:36,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323074089] [2022-02-15 13:49:36,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323074089] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:36,958 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:36,959 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:36,959 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447361004] [2022-02-15 13:49:36,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:36,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:36,959 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:36,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:36,959 INFO L87 Difference]: Start difference. First operand 8461 states and 29937 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:41,870 INFO L93 Difference]: Finished difference Result 18918 states and 66580 transitions. [2022-02-15 13:49:41,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2022-02-15 13:49:41,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:41,916 INFO L225 Difference]: With dead ends: 18918 [2022-02-15 13:49:41,916 INFO L226 Difference]: Without dead ends: 18520 [2022-02-15 13:49:41,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8267 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1605, Invalid=20151, Unknown=0, NotChecked=0, Total=21756 [2022-02-15 13:49:41,919 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 1364 mSDsluCounter, 6850 mSDsCounter, 0 mSdLazyCounter, 7704 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 8094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 7704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:41,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1364 Valid, 4758 Invalid, 8094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 7704 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:49:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18520 states. [2022-02-15 13:49:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18520 to 8861. [2022-02-15 13:49:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8861 states, 8860 states have (on average 3.550338600451467) internal successors, (31456), 8860 states have internal predecessors, (31456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 31456 transitions. [2022-02-15 13:49:42,144 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 31456 transitions. Word has length 47 [2022-02-15 13:49:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:42,144 INFO L470 AbstractCegarLoop]: Abstraction has 8861 states and 31456 transitions. [2022-02-15 13:49:42,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 31456 transitions. [2022-02-15 13:49:42,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:42,159 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:42,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:42,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-02-15 13:49:42,159 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash -195913121, now seen corresponding path program 216 times [2022-02-15 13:49:42,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:42,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676124843] [2022-02-15 13:49:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:42,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:42,355 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:42,355 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676124843] [2022-02-15 13:49:42,355 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676124843] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:42,355 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:42,355 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:42,355 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322370281] [2022-02-15 13:49:42,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:42,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:42,356 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:42,356 INFO L87 Difference]: Start difference. First operand 8861 states and 31456 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:46,875 INFO L93 Difference]: Finished difference Result 19219 states and 67529 transitions. [2022-02-15 13:49:46,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-02-15 13:49:46,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:46,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:46,921 INFO L225 Difference]: With dead ends: 19219 [2022-02-15 13:49:46,921 INFO L226 Difference]: Without dead ends: 18578 [2022-02-15 13:49:46,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10252 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1892, Invalid=24514, Unknown=0, NotChecked=0, Total=26406 [2022-02-15 13:49:46,924 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 1512 mSDsluCounter, 6967 mSDsCounter, 0 mSdLazyCounter, 7873 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 4969 SdHoareTripleChecker+Invalid, 8284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 7873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:46,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 4969 Invalid, 8284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 7873 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 13:49:46,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18578 states. [2022-02-15 13:49:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18578 to 9098. [2022-02-15 13:49:47,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 9097 states have (on average 3.553369242607453) internal successors, (32325), 9097 states have internal predecessors, (32325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 32325 transitions. [2022-02-15 13:49:47,250 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 32325 transitions. Word has length 47 [2022-02-15 13:49:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:47,251 INFO L470 AbstractCegarLoop]: Abstraction has 9098 states and 32325 transitions. [2022-02-15 13:49:47,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 32325 transitions. [2022-02-15 13:49:47,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:47,267 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:47,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:47,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-02-15 13:49:47,267 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:47,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2082893471, now seen corresponding path program 217 times [2022-02-15 13:49:47,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:47,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137117042] [2022-02-15 13:49:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:47,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:47,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:47,514 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:47,515 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137117042] [2022-02-15 13:49:47,515 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137117042] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:47,515 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:47,515 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:47,515 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416327825] [2022-02-15 13:49:47,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:47,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:47,515 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:47,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:47,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:47,515 INFO L87 Difference]: Start difference. First operand 9098 states and 32325 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:52,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:52,043 INFO L93 Difference]: Finished difference Result 21701 states and 76586 transitions. [2022-02-15 13:49:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-02-15 13:49:52,044 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:52,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:52,101 INFO L225 Difference]: With dead ends: 21701 [2022-02-15 13:49:52,101 INFO L226 Difference]: Without dead ends: 21223 [2022-02-15 13:49:52,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9037 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1648, Invalid=21914, Unknown=0, NotChecked=0, Total=23562 [2022-02-15 13:49:52,102 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1483 mSDsluCounter, 6934 mSDsCounter, 0 mSdLazyCounter, 7885 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 4765 SdHoareTripleChecker+Invalid, 8380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 7885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:52,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1483 Valid, 4765 Invalid, 8380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 7885 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:49:52,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21223 states. [2022-02-15 13:49:52,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21223 to 9359. [2022-02-15 13:49:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9359 states, 9358 states have (on average 3.5555674289378074) internal successors, (33273), 9358 states have internal predecessors, (33273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:52,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 33273 transitions. [2022-02-15 13:49:52,359 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 33273 transitions. Word has length 47 [2022-02-15 13:49:52,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:52,359 INFO L470 AbstractCegarLoop]: Abstraction has 9359 states and 33273 transitions. [2022-02-15 13:49:52,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:52,359 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 33273 transitions. [2022-02-15 13:49:52,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:52,375 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:52,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:52,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-02-15 13:49:52,375 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash -959811685, now seen corresponding path program 218 times [2022-02-15 13:49:52,375 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:52,376 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953860627] [2022-02-15 13:49:52,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:52,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:52,542 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:52,542 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953860627] [2022-02-15 13:49:52,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953860627] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:52,542 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:52,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:52,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601897754] [2022-02-15 13:49:52,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:52,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:52,542 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:52,543 INFO L87 Difference]: Start difference. First operand 9359 states and 33273 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:56,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:49:56,006 INFO L93 Difference]: Finished difference Result 19224 states and 68517 transitions. [2022-02-15 13:49:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-02-15 13:49:56,006 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:49:56,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:49:56,055 INFO L225 Difference]: With dead ends: 19224 [2022-02-15 13:49:56,055 INFO L226 Difference]: Without dead ends: 19124 [2022-02-15 13:49:56,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4973 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1059, Invalid=12983, Unknown=0, NotChecked=0, Total=14042 [2022-02-15 13:49:56,056 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1209 mSDsluCounter, 6041 mSDsCounter, 0 mSdLazyCounter, 6927 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 4364 SdHoareTripleChecker+Invalid, 7186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 6927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:49:56,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1209 Valid, 4364 Invalid, 7186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 6927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:49:56,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2022-02-15 13:49:56,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 9553. [2022-02-15 13:49:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9553 states, 9552 states have (on average 3.5583123953098825) internal successors, (33989), 9552 states have internal predecessors, (33989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:56,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 33989 transitions. [2022-02-15 13:49:56,297 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 33989 transitions. Word has length 47 [2022-02-15 13:49:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:49:56,297 INFO L470 AbstractCegarLoop]: Abstraction has 9553 states and 33989 transitions. [2022-02-15 13:49:56,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:49:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 33989 transitions. [2022-02-15 13:49:56,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:49:56,314 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:49:56,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:49:56,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-02-15 13:49:56,314 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:49:56,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:49:56,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1025874243, now seen corresponding path program 219 times [2022-02-15 13:49:56,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:49:56,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387636988] [2022-02-15 13:49:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:49:56,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:49:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:49:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:49:56,497 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:49:56,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387636988] [2022-02-15 13:49:56,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387636988] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:49:56,497 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:49:56,497 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:49:56,497 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69620814] [2022-02-15 13:49:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:49:56,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:49:56,498 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:49:56,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:49:56,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:49:56,498 INFO L87 Difference]: Start difference. First operand 9553 states and 33989 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:01,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:01,385 INFO L93 Difference]: Finished difference Result 22955 states and 81467 transitions. [2022-02-15 13:50:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-02-15 13:50:01,386 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:01,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:01,442 INFO L225 Difference]: With dead ends: 22955 [2022-02-15 13:50:01,442 INFO L226 Difference]: Without dead ends: 22705 [2022-02-15 13:50:01,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9440 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1670, Invalid=22822, Unknown=0, NotChecked=0, Total=24492 [2022-02-15 13:50:01,444 INFO L933 BasicCegarLoop]: 443 mSDtfsCounter, 1417 mSDsluCounter, 7780 mSDsCounter, 0 mSdLazyCounter, 9202 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 5485 SdHoareTripleChecker+Invalid, 9560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 9202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:01,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1417 Valid, 5485 Invalid, 9560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 9202 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 13:50:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2022-02-15 13:50:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 9570. [2022-02-15 13:50:01,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9570 states, 9569 states have (on average 3.558992580206918) internal successors, (34056), 9569 states have internal predecessors, (34056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 34056 transitions. [2022-02-15 13:50:01,723 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 34056 transitions. Word has length 47 [2022-02-15 13:50:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:01,723 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 34056 transitions. [2022-02-15 13:50:01,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 34056 transitions. [2022-02-15 13:50:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:01,740 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:01,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:01,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-02-15 13:50:01,740 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:01,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:01,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1170556931, now seen corresponding path program 220 times [2022-02-15 13:50:01,740 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:01,740 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983267439] [2022-02-15 13:50:01,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:01,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:01,926 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:01,926 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983267439] [2022-02-15 13:50:01,926 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983267439] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:01,926 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:01,927 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:01,927 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437254898] [2022-02-15 13:50:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:01,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:01,927 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:01,927 INFO L87 Difference]: Start difference. First operand 9570 states and 34056 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:09,063 INFO L93 Difference]: Finished difference Result 20403 states and 72081 transitions. [2022-02-15 13:50:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2022-02-15 13:50:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:09,114 INFO L225 Difference]: With dead ends: 20403 [2022-02-15 13:50:09,114 INFO L226 Difference]: Without dead ends: 20020 [2022-02-15 13:50:09,117 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11540 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1955, Invalid=27457, Unknown=0, NotChecked=0, Total=29412 [2022-02-15 13:50:09,117 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 1412 mSDsluCounter, 7772 mSDsCounter, 0 mSdLazyCounter, 8843 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 9263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 8843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:09,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 5254 Invalid, 9263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 8843 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 13:50:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20020 states. [2022-02-15 13:50:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20020 to 9545. [2022-02-15 13:50:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9545 states, 9544 states have (on average 3.5585708298407375) internal successors, (33963), 9544 states have internal predecessors, (33963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 33963 transitions. [2022-02-15 13:50:09,439 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 33963 transitions. Word has length 47 [2022-02-15 13:50:09,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:09,440 INFO L470 AbstractCegarLoop]: Abstraction has 9545 states and 33963 transitions. [2022-02-15 13:50:09,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:09,440 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 33963 transitions. [2022-02-15 13:50:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:09,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:09,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:09,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-02-15 13:50:09,457 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:09,457 INFO L85 PathProgramCache]: Analyzing trace with hash 861406363, now seen corresponding path program 221 times [2022-02-15 13:50:09,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:09,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335959129] [2022-02-15 13:50:09,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:09,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:09,669 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:09,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335959129] [2022-02-15 13:50:09,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335959129] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:09,669 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:09,669 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:09,669 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446721497] [2022-02-15 13:50:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:09,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:09,669 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:09,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:09,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:09,670 INFO L87 Difference]: Start difference. First operand 9545 states and 33963 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:13,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:13,572 INFO L93 Difference]: Finished difference Result 19152 states and 68026 transitions. [2022-02-15 13:50:13,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-02-15 13:50:13,572 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:13,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:13,619 INFO L225 Difference]: With dead ends: 19152 [2022-02-15 13:50:13,620 INFO L226 Difference]: Without dead ends: 19055 [2022-02-15 13:50:13,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5562 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1117, Invalid=14383, Unknown=0, NotChecked=0, Total=15500 [2022-02-15 13:50:13,622 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 1035 mSDsluCounter, 6315 mSDsCounter, 0 mSdLazyCounter, 7273 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 4476 SdHoareTripleChecker+Invalid, 7457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 7273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:13,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 4476 Invalid, 7457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 7273 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:50:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19055 states. [2022-02-15 13:50:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19055 to 9571. [2022-02-15 13:50:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9571 states, 9570 states have (on average 3.5573667711598747) internal successors, (34044), 9570 states have internal predecessors, (34044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:13,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 34044 transitions. [2022-02-15 13:50:13,911 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 34044 transitions. Word has length 47 [2022-02-15 13:50:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:13,911 INFO L470 AbstractCegarLoop]: Abstraction has 9571 states and 34044 transitions. [2022-02-15 13:50:13,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 34044 transitions. [2022-02-15 13:50:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:13,927 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:13,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:13,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-02-15 13:50:13,928 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash -864014147, now seen corresponding path program 222 times [2022-02-15 13:50:13,928 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:13,928 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231819034] [2022-02-15 13:50:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:13,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:14,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:14,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:14,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231819034] [2022-02-15 13:50:14,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231819034] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:14,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:14,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:14,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578498428] [2022-02-15 13:50:14,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:14,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:14,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:14,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:14,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:14,090 INFO L87 Difference]: Start difference. First operand 9571 states and 34044 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:19,015 INFO L93 Difference]: Finished difference Result 22580 states and 80326 transitions. [2022-02-15 13:50:19,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-15 13:50:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:19,071 INFO L225 Difference]: With dead ends: 22580 [2022-02-15 13:50:19,071 INFO L226 Difference]: Without dead ends: 22397 [2022-02-15 13:50:19,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11065 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1920, Invalid=26472, Unknown=0, NotChecked=0, Total=28392 [2022-02-15 13:50:19,072 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 1264 mSDsluCounter, 7761 mSDsCounter, 0 mSdLazyCounter, 9062 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 5425 SdHoareTripleChecker+Invalid, 9418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 9062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:19,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 5425 Invalid, 9418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 9062 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 13:50:19,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22397 states. [2022-02-15 13:50:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22397 to 9738. [2022-02-15 13:50:19,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9738 states, 9737 states have (on average 3.561055766663243) internal successors, (34674), 9737 states have internal predecessors, (34674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:19,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 34674 transitions. [2022-02-15 13:50:19,345 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 34674 transitions. Word has length 47 [2022-02-15 13:50:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:19,345 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 34674 transitions. [2022-02-15 13:50:19,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:19,345 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 34674 transitions. [2022-02-15 13:50:19,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:19,362 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:19,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:19,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-02-15 13:50:19,362 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:19,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:19,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1872368903, now seen corresponding path program 223 times [2022-02-15 13:50:19,362 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:19,362 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502152210] [2022-02-15 13:50:19,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:19,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:19,517 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:19,517 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502152210] [2022-02-15 13:50:19,517 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502152210] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:19,517 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:19,517 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:50:19,517 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118644414] [2022-02-15 13:50:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:19,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:50:19,518 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:19,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:50:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:50:19,518 INFO L87 Difference]: Start difference. First operand 9738 states and 34674 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:22,042 INFO L93 Difference]: Finished difference Result 15750 states and 56134 transitions. [2022-02-15 13:50:22,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-02-15 13:50:22,042 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:22,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:22,080 INFO L225 Difference]: With dead ends: 15750 [2022-02-15 13:50:22,081 INFO L226 Difference]: Without dead ends: 15549 [2022-02-15 13:50:22,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=746, Invalid=7996, Unknown=0, NotChecked=0, Total=8742 [2022-02-15 13:50:22,081 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 827 mSDsluCounter, 4327 mSDsCounter, 0 mSdLazyCounter, 5260 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 5260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:22,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 3142 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 5260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:50:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2022-02-15 13:50:22,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 10126. [2022-02-15 13:50:22,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10126 states, 10125 states have (on average 3.5689876543209875) internal successors, (36136), 10125 states have internal predecessors, (36136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10126 states to 10126 states and 36136 transitions. [2022-02-15 13:50:22,305 INFO L78 Accepts]: Start accepts. Automaton has 10126 states and 36136 transitions. Word has length 47 [2022-02-15 13:50:22,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:22,305 INFO L470 AbstractCegarLoop]: Abstraction has 10126 states and 36136 transitions. [2022-02-15 13:50:22,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10126 states and 36136 transitions. [2022-02-15 13:50:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:22,323 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:22,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:22,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-02-15 13:50:22,323 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash -237775175, now seen corresponding path program 224 times [2022-02-15 13:50:22,324 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:22,324 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450072658] [2022-02-15 13:50:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:22,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:22,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:22,487 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:22,487 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450072658] [2022-02-15 13:50:22,487 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450072658] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:22,487 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:22,487 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:22,487 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123959358] [2022-02-15 13:50:22,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:22,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:22,488 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:22,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:22,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:22,488 INFO L87 Difference]: Start difference. First operand 10126 states and 36136 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:25,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:25,974 INFO L93 Difference]: Finished difference Result 17140 states and 60885 transitions. [2022-02-15 13:50:25,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-02-15 13:50:25,974 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:25,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:26,018 INFO L225 Difference]: With dead ends: 17140 [2022-02-15 13:50:26,019 INFO L226 Difference]: Without dead ends: 16867 [2022-02-15 13:50:26,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=963, Invalid=12147, Unknown=0, NotChecked=0, Total=13110 [2022-02-15 13:50:26,019 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 980 mSDsluCounter, 5586 mSDsCounter, 0 mSdLazyCounter, 6420 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 4096 SdHoareTripleChecker+Invalid, 6611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 6420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:26,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 4096 Invalid, 6611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 6420 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:50:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16867 states. [2022-02-15 13:50:26,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16867 to 10162. [2022-02-15 13:50:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 10161 states have (on average 3.571400452711347) internal successors, (36289), 10161 states have internal predecessors, (36289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:26,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2022-02-15 13:50:26,260 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2022-02-15 13:50:26,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:26,260 INFO L470 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2022-02-15 13:50:26,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:26,260 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2022-02-15 13:50:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:26,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:26,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:26,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-02-15 13:50:26,279 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:26,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:26,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1355842139, now seen corresponding path program 225 times [2022-02-15 13:50:26,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:26,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775719483] [2022-02-15 13:50:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:26,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:26,439 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:26,439 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775719483] [2022-02-15 13:50:26,439 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775719483] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:26,439 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:26,439 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:50:26,439 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831093757] [2022-02-15 13:50:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:26,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:50:26,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:50:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:50:26,440 INFO L87 Difference]: Start difference. First operand 10162 states and 36289 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:28,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:28,845 INFO L93 Difference]: Finished difference Result 15565 states and 55467 transitions. [2022-02-15 13:50:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-02-15 13:50:28,845 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:28,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:28,884 INFO L225 Difference]: With dead ends: 15565 [2022-02-15 13:50:28,884 INFO L226 Difference]: Without dead ends: 15364 [2022-02-15 13:50:28,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=780, Invalid=8532, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 13:50:28,886 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 864 mSDsluCounter, 4090 mSDsCounter, 0 mSdLazyCounter, 5041 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 5178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 5041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:28,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 2962 Invalid, 5178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 5041 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:50:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15364 states. [2022-02-15 13:50:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15364 to 10162. [2022-02-15 13:50:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10162 states, 10161 states have (on average 3.571400452711347) internal successors, (36289), 10161 states have internal predecessors, (36289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2022-02-15 13:50:29,135 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2022-02-15 13:50:29,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:29,135 INFO L470 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2022-02-15 13:50:29,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:29,135 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2022-02-15 13:50:29,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:29,152 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:29,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:29,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-02-15 13:50:29,152 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:29,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:29,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1570695495, now seen corresponding path program 226 times [2022-02-15 13:50:29,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:29,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420625795] [2022-02-15 13:50:29,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:29,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:29,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:29,315 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:29,315 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420625795] [2022-02-15 13:50:29,315 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420625795] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:29,315 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:29,315 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:29,315 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921066693] [2022-02-15 13:50:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:29,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:29,315 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:29,316 INFO L87 Difference]: Start difference. First operand 10162 states and 36289 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:33,716 INFO L93 Difference]: Finished difference Result 19321 states and 68760 transitions. [2022-02-15 13:50:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-02-15 13:50:33,716 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:33,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:33,764 INFO L225 Difference]: With dead ends: 19321 [2022-02-15 13:50:33,764 INFO L226 Difference]: Without dead ends: 18685 [2022-02-15 13:50:33,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8416 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 13:50:33,765 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 1221 mSDsluCounter, 7576 mSDsCounter, 0 mSdLazyCounter, 8776 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 5475 SdHoareTripleChecker+Invalid, 9045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 8776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:33,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1221 Valid, 5475 Invalid, 9045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 8776 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-02-15 13:50:33,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18685 states. [2022-02-15 13:50:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18685 to 10501. [2022-02-15 13:50:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10501 states, 10500 states have (on average 3.570952380952381) internal successors, (37495), 10500 states have internal predecessors, (37495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 37495 transitions. [2022-02-15 13:50:34,018 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 37495 transitions. Word has length 47 [2022-02-15 13:50:34,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:34,018 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 37495 transitions. [2022-02-15 13:50:34,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 37495 transitions. [2022-02-15 13:50:34,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:34,036 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:34,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:34,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-02-15 13:50:34,036 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1015597541, now seen corresponding path program 227 times [2022-02-15 13:50:34,036 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:34,036 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486483924] [2022-02-15 13:50:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:34,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:34,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:34,192 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:34,192 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486483924] [2022-02-15 13:50:34,192 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486483924] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:34,192 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:34,192 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:50:34,192 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784912188] [2022-02-15 13:50:34,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:34,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:50:34,193 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:50:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:50:34,193 INFO L87 Difference]: Start difference. First operand 10501 states and 37495 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:38,049 INFO L93 Difference]: Finished difference Result 17680 states and 63164 transitions. [2022-02-15 13:50:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-02-15 13:50:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:38,100 INFO L225 Difference]: With dead ends: 17680 [2022-02-15 13:50:38,100 INFO L226 Difference]: Without dead ends: 17406 [2022-02-15 13:50:38,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4314 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=990, Invalid=11220, Unknown=0, NotChecked=0, Total=12210 [2022-02-15 13:50:38,101 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 960 mSDsluCounter, 5378 mSDsCounter, 0 mSdLazyCounter, 6644 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 6848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 6644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:38,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 3754 Invalid, 6848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 6644 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-02-15 13:50:38,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17406 states. [2022-02-15 13:50:38,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 10660. [2022-02-15 13:50:38,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10660 states, 10659 states have (on average 3.5705037996059668) internal successors, (38058), 10659 states have internal predecessors, (38058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:38,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 38058 transitions. [2022-02-15 13:50:38,364 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 38058 transitions. Word has length 47 [2022-02-15 13:50:38,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:38,364 INFO L470 AbstractCegarLoop]: Abstraction has 10660 states and 38058 transitions. [2022-02-15 13:50:38,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 38058 transitions. [2022-02-15 13:50:38,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:38,383 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:38,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:38,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-02-15 13:50:38,384 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:38,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 618996187, now seen corresponding path program 228 times [2022-02-15 13:50:38,384 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:38,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945936658] [2022-02-15 13:50:38,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:38,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:38,601 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:38,601 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945936658] [2022-02-15 13:50:38,602 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945936658] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:38,602 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:38,602 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:38,602 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442836127] [2022-02-15 13:50:38,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:38,602 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:38,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:38,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:38,602 INFO L87 Difference]: Start difference. First operand 10660 states and 38058 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:42,922 INFO L93 Difference]: Finished difference Result 18986 states and 67756 transitions. [2022-02-15 13:50:42,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-02-15 13:50:42,922 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:42,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:42,969 INFO L225 Difference]: With dead ends: 18986 [2022-02-15 13:50:42,969 INFO L226 Difference]: Without dead ends: 18819 [2022-02-15 13:50:42,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1214, Invalid=16342, Unknown=0, NotChecked=0, Total=17556 [2022-02-15 13:50:42,970 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1133 mSDsluCounter, 6865 mSDsCounter, 0 mSdLazyCounter, 8237 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 8517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 8237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:42,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1133 Valid, 4956 Invalid, 8517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 8237 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:50:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2022-02-15 13:50:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 10806. [2022-02-15 13:50:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10806 states, 10805 states have (on average 3.5742711707542805) internal successors, (38620), 10805 states have internal predecessors, (38620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:43,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10806 states to 10806 states and 38620 transitions. [2022-02-15 13:50:43,212 INFO L78 Accepts]: Start accepts. Automaton has 10806 states and 38620 transitions. Word has length 47 [2022-02-15 13:50:43,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:43,212 INFO L470 AbstractCegarLoop]: Abstraction has 10806 states and 38620 transitions. [2022-02-15 13:50:43,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:43,212 INFO L276 IsEmpty]: Start isEmpty. Operand 10806 states and 38620 transitions. [2022-02-15 13:50:43,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:43,230 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:43,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:43,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-02-15 13:50:43,230 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:43,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:43,231 INFO L85 PathProgramCache]: Analyzing trace with hash -2074403843, now seen corresponding path program 229 times [2022-02-15 13:50:43,231 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:43,231 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283818238] [2022-02-15 13:50:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:43,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:43,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:43,393 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:43,393 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283818238] [2022-02-15 13:50:43,393 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283818238] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:43,393 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:43,393 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:43,393 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830881494] [2022-02-15 13:50:43,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:43,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:43,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:43,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:43,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:43,394 INFO L87 Difference]: Start difference. First operand 10806 states and 38620 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:47,771 INFO L93 Difference]: Finished difference Result 21071 states and 75038 transitions. [2022-02-15 13:50:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-02-15 13:50:47,771 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:47,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:47,828 INFO L225 Difference]: With dead ends: 21071 [2022-02-15 13:50:47,828 INFO L226 Difference]: Without dead ends: 20812 [2022-02-15 13:50:47,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9197 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1649, Invalid=22221, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 13:50:47,831 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 1324 mSDsluCounter, 6410 mSDsCounter, 0 mSdLazyCounter, 7638 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 4623 SdHoareTripleChecker+Invalid, 8075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 7638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:47,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 4623 Invalid, 8075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 7638 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-02-15 13:50:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20812 states. [2022-02-15 13:50:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20812 to 10804. [2022-02-15 13:50:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10804 states, 10803 states have (on average 3.5761362584467276) internal successors, (38633), 10803 states have internal predecessors, (38633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 38633 transitions. [2022-02-15 13:50:48,102 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 38633 transitions. Word has length 47 [2022-02-15 13:50:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:48,103 INFO L470 AbstractCegarLoop]: Abstraction has 10804 states and 38633 transitions. [2022-02-15 13:50:48,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 38633 transitions. [2022-02-15 13:50:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:48,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:48,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:48,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-02-15 13:50:48,121 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1056864505, now seen corresponding path program 230 times [2022-02-15 13:50:48,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:48,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545782173] [2022-02-15 13:50:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:48,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:48,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:48,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545782173] [2022-02-15 13:50:48,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545782173] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:48,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:48,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:48,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828122722] [2022-02-15 13:50:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:48,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:48,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:48,287 INFO L87 Difference]: Start difference. First operand 10804 states and 38633 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:53,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:53,261 INFO L93 Difference]: Finished difference Result 23989 states and 85930 transitions. [2022-02-15 13:50:53,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-15 13:50:53,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:53,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:53,322 INFO L225 Difference]: With dead ends: 23989 [2022-02-15 13:50:53,322 INFO L226 Difference]: Without dead ends: 23360 [2022-02-15 13:50:53,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10181 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1804, Invalid=24278, Unknown=0, NotChecked=0, Total=26082 [2022-02-15 13:50:53,325 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 1293 mSDsluCounter, 7380 mSDsCounter, 0 mSdLazyCounter, 8793 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 5006 SdHoareTripleChecker+Invalid, 9193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 8793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:53,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 5006 Invalid, 9193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [400 Valid, 8793 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-02-15 13:50:53,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2022-02-15 13:50:53,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 11248. [2022-02-15 13:50:53,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11248 states, 11247 states have (on average 3.5828220858895707) internal successors, (40296), 11247 states have internal predecessors, (40296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 40296 transitions. [2022-02-15 13:50:53,729 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 40296 transitions. Word has length 47 [2022-02-15 13:50:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:53,729 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 40296 transitions. [2022-02-15 13:50:53,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:53,730 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 40296 transitions. [2022-02-15 13:50:53,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:53,750 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:53,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:53,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-02-15 13:50:53,750 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:53,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash -396165737, now seen corresponding path program 231 times [2022-02-15 13:50:53,751 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:53,751 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362311332] [2022-02-15 13:50:53,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:53,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:53,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:53,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362311332] [2022-02-15 13:50:53,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362311332] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:53,997 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:53,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:53,997 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338854728] [2022-02-15 13:50:53,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:53,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:53,997 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:53,997 INFO L87 Difference]: Start difference. First operand 11248 states and 40296 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:57,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:50:57,631 INFO L93 Difference]: Finished difference Result 19686 states and 70270 transitions. [2022-02-15 13:50:57,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-02-15 13:50:57,631 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:50:57,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:50:57,678 INFO L225 Difference]: With dead ends: 19686 [2022-02-15 13:50:57,678 INFO L226 Difference]: Without dead ends: 19212 [2022-02-15 13:50:57,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4707 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1119, Invalid=12453, Unknown=0, NotChecked=0, Total=13572 [2022-02-15 13:50:57,680 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 1160 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 7034 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 7322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 7034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:50:57,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 4134 Invalid, 7322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 7034 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:50:57,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2022-02-15 13:50:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 11340. [2022-02-15 13:50:58,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11340 states, 11339 states have (on average 3.582502866213952) internal successors, (40622), 11339 states have internal predecessors, (40622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:58,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 40622 transitions. [2022-02-15 13:50:58,036 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 40622 transitions. Word has length 47 [2022-02-15 13:50:58,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:50:58,036 INFO L470 AbstractCegarLoop]: Abstraction has 11340 states and 40622 transitions. [2022-02-15 13:50:58,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:50:58,037 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 40622 transitions. [2022-02-15 13:50:58,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:50:58,056 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:50:58,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:50:58,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-02-15 13:50:58,056 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:50:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:50:58,056 INFO L85 PathProgramCache]: Analyzing trace with hash -462228295, now seen corresponding path program 232 times [2022-02-15 13:50:58,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:50:58,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222673312] [2022-02-15 13:50:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:50:58,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:50:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:50:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:50:58,218 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:50:58,218 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222673312] [2022-02-15 13:50:58,218 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222673312] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:50:58,218 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:50:58,218 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:50:58,219 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147270919] [2022-02-15 13:50:58,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:50:58,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:50:58,219 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:50:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:50:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:50:58,219 INFO L87 Difference]: Start difference. First operand 11340 states and 40622 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:03,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:03,049 INFO L93 Difference]: Finished difference Result 20048 states and 71629 transitions. [2022-02-15 13:51:03,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-02-15 13:51:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:03,099 INFO L225 Difference]: With dead ends: 20048 [2022-02-15 13:51:03,099 INFO L226 Difference]: Without dead ends: 19715 [2022-02-15 13:51:03,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5753 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1191, Invalid=14811, Unknown=0, NotChecked=0, Total=16002 [2022-02-15 13:51:03,100 INFO L933 BasicCegarLoop]: 398 mSDtfsCounter, 1207 mSDsluCounter, 6414 mSDsCounter, 0 mSdLazyCounter, 7709 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 8038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 7709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:03,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 4679 Invalid, 8038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 7709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 13:51:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19715 states. [2022-02-15 13:51:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19715 to 11547. [2022-02-15 13:51:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11547 states, 11546 states have (on average 3.577775853109302) internal successors, (41309), 11546 states have internal predecessors, (41309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11547 states to 11547 states and 41309 transitions. [2022-02-15 13:51:03,353 INFO L78 Accepts]: Start accepts. Automaton has 11547 states and 41309 transitions. Word has length 47 [2022-02-15 13:51:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:03,353 INFO L470 AbstractCegarLoop]: Abstraction has 11547 states and 41309 transitions. [2022-02-15 13:51:03,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11547 states and 41309 transitions. [2022-02-15 13:51:03,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:03,372 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:03,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:03,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-02-15 13:51:03,373 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:03,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1719882533, now seen corresponding path program 233 times [2022-02-15 13:51:03,373 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:03,373 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102121347] [2022-02-15 13:51:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:03,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:03,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:03,618 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:03,618 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102121347] [2022-02-15 13:51:03,618 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102121347] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:03,618 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:03,618 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:03,618 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714059378] [2022-02-15 13:51:03,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:03,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:03,619 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:03,619 INFO L87 Difference]: Start difference. First operand 11547 states and 41309 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:09,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:09,249 INFO L93 Difference]: Finished difference Result 21886 states and 78200 transitions. [2022-02-15 13:51:09,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2022-02-15 13:51:09,249 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:09,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:09,305 INFO L225 Difference]: With dead ends: 21886 [2022-02-15 13:51:09,305 INFO L226 Difference]: Without dead ends: 21403 [2022-02-15 13:51:09,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10019 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1741, Invalid=24019, Unknown=0, NotChecked=0, Total=25760 [2022-02-15 13:51:09,307 INFO L933 BasicCegarLoop]: 467 mSDtfsCounter, 1296 mSDsluCounter, 7710 mSDsCounter, 0 mSdLazyCounter, 9139 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 5559 SdHoareTripleChecker+Invalid, 9483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 9139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:09,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1296 Valid, 5559 Invalid, 9483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 9139 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 13:51:09,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21403 states. [2022-02-15 13:51:09,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21403 to 11708. [2022-02-15 13:51:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11708 states, 11707 states have (on average 3.57948236098061) internal successors, (41905), 11707 states have internal predecessors, (41905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 41905 transitions. [2022-02-15 13:51:09,637 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 41905 transitions. Word has length 47 [2022-02-15 13:51:09,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:09,638 INFO L470 AbstractCegarLoop]: Abstraction has 11708 states and 41905 transitions. [2022-02-15 13:51:09,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:09,638 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 41905 transitions. [2022-02-15 13:51:09,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:09,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:09,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:09,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-02-15 13:51:09,660 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:09,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:09,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1451219203, now seen corresponding path program 234 times [2022-02-15 13:51:09,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:09,661 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916919555] [2022-02-15 13:51:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:09,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:09,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:09,882 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:09,882 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916919555] [2022-02-15 13:51:09,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916919555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:09,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:09,882 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:09,882 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706413744] [2022-02-15 13:51:09,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:09,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:09,882 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:09,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:09,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:09,883 INFO L87 Difference]: Start difference. First operand 11708 states and 41905 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:15,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:15,606 INFO L93 Difference]: Finished difference Result 24655 states and 88051 transitions. [2022-02-15 13:51:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-02-15 13:51:15,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:15,670 INFO L225 Difference]: With dead ends: 24655 [2022-02-15 13:51:15,671 INFO L226 Difference]: Without dead ends: 24445 [2022-02-15 13:51:15,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14334 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2151, Invalid=33381, Unknown=0, NotChecked=0, Total=35532 [2022-02-15 13:51:15,675 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 1439 mSDsluCounter, 8196 mSDsCounter, 0 mSdLazyCounter, 9416 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 5681 SdHoareTripleChecker+Invalid, 9901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 9416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:15,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1439 Valid, 5681 Invalid, 9901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 9416 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 13:51:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24445 states. [2022-02-15 13:51:16,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24445 to 11631. [2022-02-15 13:51:16,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11631 states, 11630 states have (on average 3.5825451418744625) internal successors, (41665), 11630 states have internal predecessors, (41665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 41665 transitions. [2022-02-15 13:51:16,097 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 41665 transitions. Word has length 47 [2022-02-15 13:51:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:16,097 INFO L470 AbstractCegarLoop]: Abstraction has 11631 states and 41665 transitions. [2022-02-15 13:51:16,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 41665 transitions. [2022-02-15 13:51:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:16,117 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:16,117 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:16,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-02-15 13:51:16,117 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash 120202233, now seen corresponding path program 235 times [2022-02-15 13:51:16,118 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:16,118 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812820761] [2022-02-15 13:51:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:16,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:16,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:16,280 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:16,280 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812820761] [2022-02-15 13:51:16,280 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812820761] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:16,280 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:16,280 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:16,280 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352939618] [2022-02-15 13:51:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:16,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:16,281 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:16,281 INFO L87 Difference]: Start difference. First operand 11631 states and 41665 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:21,712 INFO L93 Difference]: Finished difference Result 25521 states and 91530 transitions. [2022-02-15 13:51:21,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2022-02-15 13:51:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:21,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:21,779 INFO L225 Difference]: With dead ends: 25521 [2022-02-15 13:51:21,779 INFO L226 Difference]: Without dead ends: 24833 [2022-02-15 13:51:21,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12097 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1913, Invalid=28537, Unknown=0, NotChecked=0, Total=30450 [2022-02-15 13:51:21,782 INFO L933 BasicCegarLoop]: 496 mSDtfsCounter, 1225 mSDsluCounter, 8635 mSDsCounter, 0 mSdLazyCounter, 10192 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 6116 SdHoareTripleChecker+Invalid, 10557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 10192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:21,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 6116 Invalid, 10557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 10192 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 13:51:21,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24833 states. [2022-02-15 13:51:22,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24833 to 12061. [2022-02-15 13:51:22,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12061 states, 12060 states have (on average 3.5893864013266996) internal successors, (43288), 12060 states have internal predecessors, (43288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 43288 transitions. [2022-02-15 13:51:22,100 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 43288 transitions. Word has length 47 [2022-02-15 13:51:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:22,101 INFO L470 AbstractCegarLoop]: Abstraction has 12061 states and 43288 transitions. [2022-02-15 13:51:22,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 43288 transitions. [2022-02-15 13:51:22,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:22,121 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:22,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:22,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-02-15 13:51:22,122 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash 419093911, now seen corresponding path program 236 times [2022-02-15 13:51:22,122 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:22,122 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110999830] [2022-02-15 13:51:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:22,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:22,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:22,363 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:22,363 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110999830] [2022-02-15 13:51:22,363 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110999830] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:22,363 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:22,363 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:22,363 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842859042] [2022-02-15 13:51:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:22,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:22,363 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:22,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:22,363 INFO L87 Difference]: Start difference. First operand 12061 states and 43288 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:29,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:29,327 INFO L93 Difference]: Finished difference Result 25860 states and 92602 transitions. [2022-02-15 13:51:29,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-02-15 13:51:29,328 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:29,397 INFO L225 Difference]: With dead ends: 25860 [2022-02-15 13:51:29,398 INFO L226 Difference]: Without dead ends: 25280 [2022-02-15 13:51:29,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11270 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1932, Invalid=26798, Unknown=0, NotChecked=0, Total=28730 [2022-02-15 13:51:29,401 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 1266 mSDsluCounter, 7431 mSDsCounter, 0 mSdLazyCounter, 8456 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 5224 SdHoareTripleChecker+Invalid, 8836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 8456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:29,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1266 Valid, 5224 Invalid, 8836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 8456 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-02-15 13:51:29,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25280 states. [2022-02-15 13:51:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25280 to 12784. [2022-02-15 13:51:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12784 states, 12783 states have (on average 3.6001721035750607) internal successors, (46021), 12783 states have internal predecessors, (46021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:29,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12784 states to 12784 states and 46021 transitions. [2022-02-15 13:51:29,801 INFO L78 Accepts]: Start accepts. Automaton has 12784 states and 46021 transitions. Word has length 47 [2022-02-15 13:51:29,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:29,801 INFO L470 AbstractCegarLoop]: Abstraction has 12784 states and 46021 transitions. [2022-02-15 13:51:29,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:29,802 INFO L276 IsEmpty]: Start isEmpty. Operand 12784 states and 46021 transitions. [2022-02-15 13:51:29,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:29,826 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:29,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:29,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-02-15 13:51:29,826 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1306326599, now seen corresponding path program 237 times [2022-02-15 13:51:29,826 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:29,827 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574068528] [2022-02-15 13:51:29,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:29,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:29,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:30,077 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:30,077 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574068528] [2022-02-15 13:51:30,078 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574068528] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:30,078 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:30,078 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:30,078 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881248902] [2022-02-15 13:51:30,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:30,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:30,078 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:30,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:30,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:30,078 INFO L87 Difference]: Start difference. First operand 12784 states and 46021 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:36,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:36,261 INFO L93 Difference]: Finished difference Result 25321 states and 90899 transitions. [2022-02-15 13:51:36,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2022-02-15 13:51:36,261 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:36,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:36,327 INFO L225 Difference]: With dead ends: 25321 [2022-02-15 13:51:36,327 INFO L226 Difference]: Without dead ends: 24655 [2022-02-15 13:51:36,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9290 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1610, Invalid=22570, Unknown=0, NotChecked=0, Total=24180 [2022-02-15 13:51:36,328 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1160 mSDsluCounter, 7767 mSDsCounter, 0 mSdLazyCounter, 9090 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 9481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 9090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:36,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1160 Valid, 5564 Invalid, 9481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 9090 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-02-15 13:51:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2022-02-15 13:51:36,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 12777. [2022-02-15 13:51:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12777 states, 12776 states have (on average 3.59815278647464) internal successors, (45970), 12776 states have internal predecessors, (45970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 45970 transitions. [2022-02-15 13:51:36,648 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 45970 transitions. Word has length 47 [2022-02-15 13:51:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:36,648 INFO L470 AbstractCegarLoop]: Abstraction has 12777 states and 45970 transitions. [2022-02-15 13:51:36,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 45970 transitions. [2022-02-15 13:51:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:36,672 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:36,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:36,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-02-15 13:51:36,672 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash 938152415, now seen corresponding path program 238 times [2022-02-15 13:51:36,672 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:36,672 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420133685] [2022-02-15 13:51:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:36,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:36,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:36,921 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420133685] [2022-02-15 13:51:36,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420133685] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:36,921 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:36,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:36,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651295581] [2022-02-15 13:51:36,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:36,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:36,921 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:36,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:36,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:36,922 INFO L87 Difference]: Start difference. First operand 12777 states and 45970 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:42,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:42,558 INFO L93 Difference]: Finished difference Result 26145 states and 93369 transitions. [2022-02-15 13:51:42,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-02-15 13:51:42,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:42,628 INFO L225 Difference]: With dead ends: 26145 [2022-02-15 13:51:42,628 INFO L226 Difference]: Without dead ends: 25741 [2022-02-15 13:51:42,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11310 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1955, Invalid=26775, Unknown=0, NotChecked=0, Total=28730 [2022-02-15 13:51:42,631 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 1371 mSDsluCounter, 8014 mSDsCounter, 0 mSdLazyCounter, 9013 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 5758 SdHoareTripleChecker+Invalid, 9424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 9013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:42,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 5758 Invalid, 9424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 9013 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-02-15 13:51:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25741 states. [2022-02-15 13:51:42,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25741 to 13143. [2022-02-15 13:51:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13143 states, 13142 states have (on average 3.604474204839446) internal successors, (47370), 13142 states have internal predecessors, (47370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13143 states to 13143 states and 47370 transitions. [2022-02-15 13:51:43,032 INFO L78 Accepts]: Start accepts. Automaton has 13143 states and 47370 transitions. Word has length 47 [2022-02-15 13:51:43,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:43,032 INFO L470 AbstractCegarLoop]: Abstraction has 13143 states and 47370 transitions. [2022-02-15 13:51:43,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:43,033 INFO L276 IsEmpty]: Start isEmpty. Operand 13143 states and 47370 transitions. [2022-02-15 13:51:43,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:43,058 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:43,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:43,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-02-15 13:51:43,058 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:43,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:43,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1104337533, now seen corresponding path program 239 times [2022-02-15 13:51:43,059 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:43,059 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482722890] [2022-02-15 13:51:43,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:43,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:43,312 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:43,312 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482722890] [2022-02-15 13:51:43,312 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482722890] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:43,312 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:43,312 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:43,312 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282835215] [2022-02-15 13:51:43,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:43,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:43,312 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:43,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:43,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:43,313 INFO L87 Difference]: Start difference. First operand 13143 states and 47370 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:48,313 INFO L93 Difference]: Finished difference Result 27580 states and 98708 transitions. [2022-02-15 13:51:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-02-15 13:51:48,314 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:48,385 INFO L225 Difference]: With dead ends: 27580 [2022-02-15 13:51:48,386 INFO L226 Difference]: Without dead ends: 27369 [2022-02-15 13:51:48,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11304 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1882, Invalid=26848, Unknown=0, NotChecked=0, Total=28730 [2022-02-15 13:51:48,387 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1349 mSDsluCounter, 7525 mSDsCounter, 0 mSdLazyCounter, 8778 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1349 SdHoareTripleChecker+Valid, 5409 SdHoareTripleChecker+Invalid, 9273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 8778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:48,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1349 Valid, 5409 Invalid, 9273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 8778 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:51:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27369 states. [2022-02-15 13:51:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27369 to 13182. [2022-02-15 13:51:48,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13182 states, 13181 states have (on average 3.6034443517183825) internal successors, (47497), 13181 states have internal predecessors, (47497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13182 states to 13182 states and 47497 transitions. [2022-02-15 13:51:48,736 INFO L78 Accepts]: Start accepts. Automaton has 13182 states and 47497 transitions. Word has length 47 [2022-02-15 13:51:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:48,736 INFO L470 AbstractCegarLoop]: Abstraction has 13182 states and 47497 transitions. [2022-02-15 13:51:48,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 13182 states and 47497 transitions. [2022-02-15 13:51:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:48,760 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:48,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:48,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-02-15 13:51:48,760 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:48,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:48,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1938367623, now seen corresponding path program 240 times [2022-02-15 13:51:48,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:48,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165658828] [2022-02-15 13:51:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:48,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:48,924 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:48,924 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165658828] [2022-02-15 13:51:48,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165658828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:48,924 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:48,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:48,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607985527] [2022-02-15 13:51:48,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:48,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:48,924 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:48,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:48,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:48,925 INFO L87 Difference]: Start difference. First operand 13182 states and 47497 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:53,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:53,447 INFO L93 Difference]: Finished difference Result 26505 states and 95211 transitions. [2022-02-15 13:51:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-02-15 13:51:53,447 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:53,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:53,517 INFO L225 Difference]: With dead ends: 26505 [2022-02-15 13:51:53,517 INFO L226 Difference]: Without dead ends: 26289 [2022-02-15 13:51:53,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8349 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2022-02-15 13:51:53,519 INFO L933 BasicCegarLoop]: 428 mSDtfsCounter, 1241 mSDsluCounter, 7423 mSDsCounter, 0 mSdLazyCounter, 8565 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 5276 SdHoareTripleChecker+Invalid, 8891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 8565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:53,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 5276 Invalid, 8891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 8565 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:51:53,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26289 states. [2022-02-15 13:51:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26289 to 13159. [2022-02-15 13:51:53,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13159 states, 13158 states have (on average 3.6042711658306734) internal successors, (47425), 13158 states have internal predecessors, (47425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:53,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13159 states to 13159 states and 47425 transitions. [2022-02-15 13:51:53,992 INFO L78 Accepts]: Start accepts. Automaton has 13159 states and 47425 transitions. Word has length 47 [2022-02-15 13:51:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:53,992 INFO L470 AbstractCegarLoop]: Abstraction has 13159 states and 47425 transitions. [2022-02-15 13:51:53,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:53,992 INFO L276 IsEmpty]: Start isEmpty. Operand 13159 states and 47425 transitions. [2022-02-15 13:51:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:54,017 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:54,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:54,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-02-15 13:51:54,017 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:54,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:54,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2004430181, now seen corresponding path program 241 times [2022-02-15 13:51:54,017 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:54,017 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103421658] [2022-02-15 13:51:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:54,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:54,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:54,179 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:54,179 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103421658] [2022-02-15 13:51:54,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103421658] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:54,179 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:54,179 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:54,179 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996081318] [2022-02-15 13:51:54,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:54,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:54,180 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:54,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:54,180 INFO L87 Difference]: Start difference. First operand 13159 states and 47425 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:58,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:51:58,923 INFO L93 Difference]: Finished difference Result 28288 states and 101489 transitions. [2022-02-15 13:51:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-02-15 13:51:58,924 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:51:58,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:51:58,999 INFO L225 Difference]: With dead ends: 28288 [2022-02-15 13:51:58,999 INFO L226 Difference]: Without dead ends: 27918 [2022-02-15 13:51:59,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9192 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1582, Invalid=22288, Unknown=0, NotChecked=0, Total=23870 [2022-02-15 13:51:59,000 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 1441 mSDsluCounter, 7549 mSDsCounter, 0 mSdLazyCounter, 8949 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 5342 SdHoareTripleChecker+Invalid, 9397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 8949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:51:59,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1441 Valid, 5342 Invalid, 9397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 8949 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-02-15 13:51:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27918 states. [2022-02-15 13:51:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27918 to 13174. [2022-02-15 13:51:59,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13174 states, 13173 states have (on average 3.6044940408411144) internal successors, (47482), 13173 states have internal predecessors, (47482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13174 states to 13174 states and 47482 transitions. [2022-02-15 13:51:59,354 INFO L78 Accepts]: Start accepts. Automaton has 13174 states and 47482 transitions. Word has length 47 [2022-02-15 13:51:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:51:59,354 INFO L470 AbstractCegarLoop]: Abstraction has 13174 states and 47482 transitions. [2022-02-15 13:51:59,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:51:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 13174 states and 47482 transitions. [2022-02-15 13:51:59,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:51:59,378 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:51:59,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:51:59,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-02-15 13:51:59,378 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:51:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:51:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash -117149575, now seen corresponding path program 242 times [2022-02-15 13:51:59,378 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:51:59,378 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051866358] [2022-02-15 13:51:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:51:59,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:51:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:51:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:51:59,541 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:51:59,541 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051866358] [2022-02-15 13:51:59,541 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051866358] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:51:59,541 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:51:59,541 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:51:59,541 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446364053] [2022-02-15 13:51:59,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:51:59,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:51:59,541 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:51:59,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:51:59,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:51:59,542 INFO L87 Difference]: Start difference. First operand 13174 states and 47482 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:04,595 INFO L93 Difference]: Finished difference Result 27086 states and 96712 transitions. [2022-02-15 13:52:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-02-15 13:52:04,595 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:04,665 INFO L225 Difference]: With dead ends: 27086 [2022-02-15 13:52:04,665 INFO L226 Difference]: Without dead ends: 26626 [2022-02-15 13:52:04,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11866 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2028, Invalid=28074, Unknown=0, NotChecked=0, Total=30102 [2022-02-15 13:52:04,669 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 1437 mSDsluCounter, 7573 mSDsCounter, 0 mSdLazyCounter, 8582 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 5289 SdHoareTripleChecker+Invalid, 8996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 8582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:04,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 5289 Invalid, 8996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 8582 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-02-15 13:52:04,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26626 states. [2022-02-15 13:52:05,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26626 to 13520. [2022-02-15 13:52:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13520 states, 13519 states have (on average 3.6072194688956283) internal successors, (48766), 13519 states have internal predecessors, (48766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 48766 transitions. [2022-02-15 13:52:05,113 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 48766 transitions. Word has length 47 [2022-02-15 13:52:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:05,113 INFO L470 AbstractCegarLoop]: Abstraction has 13520 states and 48766 transitions. [2022-02-15 13:52:05,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 48766 transitions. [2022-02-15 13:52:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:05,138 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:05,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:05,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-02-15 13:52:05,138 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:05,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1842570085, now seen corresponding path program 243 times [2022-02-15 13:52:05,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:05,139 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492536831] [2022-02-15 13:52:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:05,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:05,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:05,301 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:05,301 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492536831] [2022-02-15 13:52:05,301 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492536831] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:05,301 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:05,301 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:05,301 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344074914] [2022-02-15 13:52:05,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:05,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:05,301 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:05,301 INFO L87 Difference]: Start difference. First operand 13520 states and 48766 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:10,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:10,730 INFO L93 Difference]: Finished difference Result 28937 states and 103320 transitions. [2022-02-15 13:52:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-02-15 13:52:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:10,806 INFO L225 Difference]: With dead ends: 28937 [2022-02-15 13:52:10,806 INFO L226 Difference]: Without dead ends: 28321 [2022-02-15 13:52:10,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13400 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2101, Invalid=31571, Unknown=0, NotChecked=0, Total=33672 [2022-02-15 13:52:10,808 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 1431 mSDsluCounter, 7998 mSDsCounter, 0 mSdLazyCounter, 9217 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 5541 SdHoareTripleChecker+Invalid, 9682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 9217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:10,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1431 Valid, 5541 Invalid, 9682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 9217 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-02-15 13:52:10,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28321 states. [2022-02-15 13:52:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28321 to 13824. [2022-02-15 13:52:11,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13824 states, 13823 states have (on average 3.6139767054908485) internal successors, (49956), 13823 states have internal predecessors, (49956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:11,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13824 states to 13824 states and 49956 transitions. [2022-02-15 13:52:11,192 INFO L78 Accepts]: Start accepts. Automaton has 13824 states and 49956 transitions. Word has length 47 [2022-02-15 13:52:11,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:11,192 INFO L470 AbstractCegarLoop]: Abstraction has 13824 states and 49956 transitions. [2022-02-15 13:52:11,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:11,192 INFO L276 IsEmpty]: Start isEmpty. Operand 13824 states and 49956 transitions. [2022-02-15 13:52:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:11,219 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:11,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:11,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-02-15 13:52:11,220 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:11,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1470269211, now seen corresponding path program 244 times [2022-02-15 13:52:11,220 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:11,220 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49354521] [2022-02-15 13:52:11,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:11,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:11,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:11,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49354521] [2022-02-15 13:52:11,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49354521] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:11,492 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:11,492 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:11,492 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485845930] [2022-02-15 13:52:11,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:11,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:11,492 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:11,493 INFO L87 Difference]: Start difference. First operand 13824 states and 49956 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:13,094 INFO L93 Difference]: Finished difference Result 16177 states and 58179 transitions. [2022-02-15 13:52:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:52:13,094 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:13,136 INFO L225 Difference]: With dead ends: 16177 [2022-02-15 13:52:13,136 INFO L226 Difference]: Without dead ends: 15887 [2022-02-15 13:52:13,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:52:13,137 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 550 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 3205 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:13,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1652 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3205 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:52:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2022-02-15 13:52:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 13906. [2022-02-15 13:52:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13906 states, 13905 states have (on average 3.6110751528227256) internal successors, (50212), 13905 states have internal predecessors, (50212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:13,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 50212 transitions. [2022-02-15 13:52:13,428 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 50212 transitions. Word has length 47 [2022-02-15 13:52:13,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:13,428 INFO L470 AbstractCegarLoop]: Abstraction has 13906 states and 50212 transitions. [2022-02-15 13:52:13,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:13,428 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 50212 transitions. [2022-02-15 13:52:13,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:13,456 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:13,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:13,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-02-15 13:52:13,456 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:13,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1473949481, now seen corresponding path program 245 times [2022-02-15 13:52:13,457 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:13,457 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550350607] [2022-02-15 13:52:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:13,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:13,665 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:13,665 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550350607] [2022-02-15 13:52:13,665 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550350607] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:13,666 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:13,666 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:13,666 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840905781] [2022-02-15 13:52:13,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:13,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:13,666 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:13,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:13,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:13,666 INFO L87 Difference]: Start difference. First operand 13906 states and 50212 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:16,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:16,532 INFO L93 Difference]: Finished difference Result 19142 states and 69242 transitions. [2022-02-15 13:52:16,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-02-15 13:52:16,532 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:16,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:16,584 INFO L225 Difference]: With dead ends: 19142 [2022-02-15 13:52:16,584 INFO L226 Difference]: Without dead ends: 18890 [2022-02-15 13:52:16,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=520, Invalid=4736, Unknown=0, NotChecked=0, Total=5256 [2022-02-15 13:52:16,584 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 744 mSDsluCounter, 3925 mSDsCounter, 0 mSdLazyCounter, 4924 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 5031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:16,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [744 Valid, 2641 Invalid, 5031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4924 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:52:16,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18890 states. [2022-02-15 13:52:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18890 to 14354. [2022-02-15 13:52:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14354 states, 14353 states have (on average 3.612624538424023) internal successors, (51852), 14353 states have internal predecessors, (51852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14354 states to 14354 states and 51852 transitions. [2022-02-15 13:52:16,944 INFO L78 Accepts]: Start accepts. Automaton has 14354 states and 51852 transitions. Word has length 47 [2022-02-15 13:52:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:16,944 INFO L470 AbstractCegarLoop]: Abstraction has 14354 states and 51852 transitions. [2022-02-15 13:52:16,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 14354 states and 51852 transitions. [2022-02-15 13:52:16,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:16,973 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:16,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:16,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-02-15 13:52:16,973 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:16,973 INFO L85 PathProgramCache]: Analyzing trace with hash 623297573, now seen corresponding path program 246 times [2022-02-15 13:52:16,973 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:16,974 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101608139] [2022-02-15 13:52:16,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:16,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:17,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:17,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:17,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101608139] [2022-02-15 13:52:17,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101608139] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:17,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:17,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:17,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445125031] [2022-02-15 13:52:17,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:17,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:17,131 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:17,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:17,132 INFO L87 Difference]: Start difference. First operand 14354 states and 51852 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:20,274 INFO L93 Difference]: Finished difference Result 19964 states and 72371 transitions. [2022-02-15 13:52:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-02-15 13:52:20,274 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:20,322 INFO L225 Difference]: With dead ends: 19964 [2022-02-15 13:52:20,323 INFO L226 Difference]: Without dead ends: 19698 [2022-02-15 13:52:20,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=590, Invalid=6216, Unknown=0, NotChecked=0, Total=6806 [2022-02-15 13:52:20,323 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 765 mSDsluCounter, 4562 mSDsCounter, 0 mSdLazyCounter, 5633 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 3067 SdHoareTripleChecker+Invalid, 5732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 5633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:20,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [765 Valid, 3067 Invalid, 5732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 5633 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:52:20,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2022-02-15 13:52:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 14432. [2022-02-15 13:52:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14432 states, 14431 states have (on average 3.6118079135195065) internal successors, (52122), 14431 states have internal predecessors, (52122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:20,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14432 states to 14432 states and 52122 transitions. [2022-02-15 13:52:20,624 INFO L78 Accepts]: Start accepts. Automaton has 14432 states and 52122 transitions. Word has length 47 [2022-02-15 13:52:20,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:20,624 INFO L470 AbstractCegarLoop]: Abstraction has 14432 states and 52122 transitions. [2022-02-15 13:52:20,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:20,624 INFO L276 IsEmpty]: Start isEmpty. Operand 14432 states and 52122 transitions. [2022-02-15 13:52:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:20,651 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:20,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:20,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-02-15 13:52:20,651 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:20,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1495862171, now seen corresponding path program 247 times [2022-02-15 13:52:20,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:20,651 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292218242] [2022-02-15 13:52:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:20,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:20,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:20,805 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:20,805 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292218242] [2022-02-15 13:52:20,805 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292218242] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:20,805 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:20,805 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-02-15 13:52:20,805 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610943813] [2022-02-15 13:52:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:20,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-02-15 13:52:20,805 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:20,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-02-15 13:52:20,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2022-02-15 13:52:20,805 INFO L87 Difference]: Start difference. First operand 14432 states and 52122 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:22,967 INFO L93 Difference]: Finished difference Result 17259 states and 61929 transitions. [2022-02-15 13:52:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-02-15 13:52:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:23,011 INFO L225 Difference]: With dead ends: 17259 [2022-02-15 13:52:23,012 INFO L226 Difference]: Without dead ends: 16959 [2022-02-15 13:52:23,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=392, Invalid=3148, Unknown=0, NotChecked=0, Total=3540 [2022-02-15 13:52:23,012 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 554 mSDsluCounter, 2795 mSDsCounter, 0 mSdLazyCounter, 3832 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 3894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 3832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:23,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 1671 Invalid, 3894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 3832 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:52:23,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2022-02-15 13:52:23,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 14604. [2022-02-15 13:52:23,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14604 states, 14603 states have (on average 3.607683352735739) internal successors, (52683), 14603 states have internal predecessors, (52683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 52683 transitions. [2022-02-15 13:52:23,316 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 52683 transitions. Word has length 47 [2022-02-15 13:52:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:23,316 INFO L470 AbstractCegarLoop]: Abstraction has 14604 states and 52683 transitions. [2022-02-15 13:52:23,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 15 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:23,316 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 52683 transitions. [2022-02-15 13:52:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:23,345 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:23,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:23,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-02-15 13:52:23,345 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 820230663, now seen corresponding path program 248 times [2022-02-15 13:52:23,345 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:23,345 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349950392] [2022-02-15 13:52:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:23,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:23,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:23,545 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:23,545 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349950392] [2022-02-15 13:52:23,545 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349950392] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:23,545 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:23,545 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:23,545 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456109357] [2022-02-15 13:52:23,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:23,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:23,545 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:23,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:23,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:23,546 INFO L87 Difference]: Start difference. First operand 14604 states and 52683 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:26,761 INFO L93 Difference]: Finished difference Result 20227 states and 73158 transitions. [2022-02-15 13:52:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-02-15 13:52:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:26,813 INFO L225 Difference]: With dead ends: 20227 [2022-02-15 13:52:26,813 INFO L226 Difference]: Without dead ends: 19927 [2022-02-15 13:52:26,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=590, Invalid=5416, Unknown=0, NotChecked=0, Total=6006 [2022-02-15 13:52:26,813 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 748 mSDsluCounter, 3874 mSDsCounter, 0 mSdLazyCounter, 5014 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 5135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:26,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2642 Invalid, 5135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 5014 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:52:26,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19927 states. [2022-02-15 13:52:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19927 to 14998. [2022-02-15 13:52:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14998 states, 14997 states have (on average 3.6193905447756216) internal successors, (54280), 14997 states have internal predecessors, (54280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14998 states to 14998 states and 54280 transitions. [2022-02-15 13:52:27,116 INFO L78 Accepts]: Start accepts. Automaton has 14998 states and 54280 transitions. Word has length 47 [2022-02-15 13:52:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:27,116 INFO L470 AbstractCegarLoop]: Abstraction has 14998 states and 54280 transitions. [2022-02-15 13:52:27,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 14998 states and 54280 transitions. [2022-02-15 13:52:27,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:27,144 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:27,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:27,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-02-15 13:52:27,145 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -30421245, now seen corresponding path program 249 times [2022-02-15 13:52:27,145 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:27,145 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8638025] [2022-02-15 13:52:27,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:27,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:27,299 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:27,299 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8638025] [2022-02-15 13:52:27,299 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8638025] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:27,299 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:27,299 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:27,299 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16334400] [2022-02-15 13:52:27,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:27,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:27,299 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:27,300 INFO L87 Difference]: Start difference. First operand 14998 states and 54280 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:29,874 INFO L93 Difference]: Finished difference Result 20876 states and 75872 transitions. [2022-02-15 13:52:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-02-15 13:52:29,874 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:29,926 INFO L225 Difference]: With dead ends: 20876 [2022-02-15 13:52:29,926 INFO L226 Difference]: Without dead ends: 20582 [2022-02-15 13:52:29,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=588, Invalid=5892, Unknown=0, NotChecked=0, Total=6480 [2022-02-15 13:52:29,927 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 758 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 5227 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 5348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:29,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 2828 Invalid, 5348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 5227 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:52:29,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20582 states. [2022-02-15 13:52:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20582 to 14924. [2022-02-15 13:52:30,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14924 states, 14923 states have (on average 3.620853715740803) internal successors, (54034), 14923 states have internal predecessors, (54034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:30,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 54034 transitions. [2022-02-15 13:52:30,261 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 54034 transitions. Word has length 47 [2022-02-15 13:52:30,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:30,261 INFO L470 AbstractCegarLoop]: Abstraction has 14924 states and 54034 transitions. [2022-02-15 13:52:30,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 54034 transitions. [2022-02-15 13:52:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:30,288 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:30,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:30,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-02-15 13:52:30,289 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:30,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:30,289 INFO L85 PathProgramCache]: Analyzing trace with hash 392424199, now seen corresponding path program 250 times [2022-02-15 13:52:30,289 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:30,289 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650136565] [2022-02-15 13:52:30,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:30,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:30,507 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:30,507 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650136565] [2022-02-15 13:52:30,507 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650136565] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:30,507 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:30,507 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:30,507 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445446679] [2022-02-15 13:52:30,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:30,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:30,508 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:30,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:30,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:30,508 INFO L87 Difference]: Start difference. First operand 14924 states and 54034 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:32,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:32,413 INFO L93 Difference]: Finished difference Result 17205 states and 61974 transitions. [2022-02-15 13:52:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-02-15 13:52:32,413 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:32,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:32,457 INFO L225 Difference]: With dead ends: 17205 [2022-02-15 13:52:32,457 INFO L226 Difference]: Without dead ends: 17078 [2022-02-15 13:52:32,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 13:52:32,458 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 584 mSDsluCounter, 3087 mSDsCounter, 0 mSdLazyCounter, 3569 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:32,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1817 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3569 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:52:32,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2022-02-15 13:52:32,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 14936. [2022-02-15 13:52:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.619953130231001) internal successors, (54064), 14935 states have internal predecessors, (54064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54064 transitions. [2022-02-15 13:52:32,740 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54064 transitions. Word has length 47 [2022-02-15 13:52:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:32,740 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54064 transitions. [2022-02-15 13:52:32,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:32,741 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54064 transitions. [2022-02-15 13:52:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:32,768 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:32,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:32,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-02-15 13:52:32,769 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash -958324405, now seen corresponding path program 251 times [2022-02-15 13:52:32,769 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:32,769 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003537272] [2022-02-15 13:52:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:32,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:33,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:33,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003537272] [2022-02-15 13:52:33,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003537272] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:33,015 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:33,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:33,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400341682] [2022-02-15 13:52:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:33,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:33,016 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:33,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:33,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:33,016 INFO L87 Difference]: Start difference. First operand 14936 states and 54064 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:35,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:35,573 INFO L93 Difference]: Finished difference Result 19887 states and 71998 transitions. [2022-02-15 13:52:35,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 13:52:35,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:35,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:35,625 INFO L225 Difference]: With dead ends: 19887 [2022-02-15 13:52:35,625 INFO L226 Difference]: Without dead ends: 19798 [2022-02-15 13:52:35,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1833 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=574, Invalid=5588, Unknown=0, NotChecked=0, Total=6162 [2022-02-15 13:52:35,626 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 800 mSDsluCounter, 4386 mSDsCounter, 0 mSdLazyCounter, 5474 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 5474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:35,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [800 Valid, 2978 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 5474 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:52:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19798 states. [2022-02-15 13:52:35,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19798 to 14948. [2022-02-15 13:52:35,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619856827457015) internal successors, (54106), 14947 states have internal predecessors, (54106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54106 transitions. [2022-02-15 13:52:35,930 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54106 transitions. Word has length 47 [2022-02-15 13:52:35,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:35,930 INFO L470 AbstractCegarLoop]: Abstraction has 14948 states and 54106 transitions. [2022-02-15 13:52:35,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:35,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54106 transitions. [2022-02-15 13:52:35,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:35,958 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:35,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:35,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-02-15 13:52:35,959 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:35,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:35,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1808976313, now seen corresponding path program 252 times [2022-02-15 13:52:35,959 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:35,959 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592304495] [2022-02-15 13:52:35,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:35,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:36,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:36,123 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:36,123 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592304495] [2022-02-15 13:52:36,123 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592304495] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:36,123 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:36,123 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:36,123 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960238553] [2022-02-15 13:52:36,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:36,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:36,123 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:36,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:36,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:36,124 INFO L87 Difference]: Start difference. First operand 14948 states and 54106 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:38,822 INFO L93 Difference]: Finished difference Result 20391 states and 74027 transitions. [2022-02-15 13:52:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 13:52:38,822 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:38,872 INFO L225 Difference]: With dead ends: 20391 [2022-02-15 13:52:38,872 INFO L226 Difference]: Without dead ends: 20288 [2022-02-15 13:52:38,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2761 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=700, Invalid=7856, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:52:38,873 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 849 mSDsluCounter, 4876 mSDsCounter, 0 mSdLazyCounter, 6024 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 6147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 6024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:38,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 3284 Invalid, 6147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 6024 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:52:38,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20288 states. [2022-02-15 13:52:39,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20288 to 14936. [2022-02-15 13:52:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.6207566119852697) internal successors, (54076), 14935 states have internal predecessors, (54076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54076 transitions. [2022-02-15 13:52:39,188 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54076 transitions. Word has length 47 [2022-02-15 13:52:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:39,188 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54076 transitions. [2022-02-15 13:52:39,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:39,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54076 transitions. [2022-02-15 13:52:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:39,216 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:39,216 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:39,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-02-15 13:52:39,216 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:39,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:39,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1934347557, now seen corresponding path program 253 times [2022-02-15 13:52:39,217 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:39,217 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828248508] [2022-02-15 13:52:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:39,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:39,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:39,394 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:39,394 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828248508] [2022-02-15 13:52:39,394 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828248508] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:39,394 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:39,394 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:39,394 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334813896] [2022-02-15 13:52:39,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:39,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:39,394 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:39,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:39,395 INFO L87 Difference]: Start difference. First operand 14936 states and 54076 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:40,844 INFO L93 Difference]: Finished difference Result 16876 states and 60828 transitions. [2022-02-15 13:52:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:52:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:40,885 INFO L225 Difference]: With dead ends: 16876 [2022-02-15 13:52:40,885 INFO L226 Difference]: Without dead ends: 16749 [2022-02-15 13:52:40,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=1786, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:52:40,886 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 475 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 3435 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:40,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1755 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3435 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:52:40,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16749 states. [2022-02-15 13:52:41,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16749 to 14952. [2022-02-15 13:52:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14952 states, 14951 states have (on average 3.619557220252826) internal successors, (54116), 14951 states have internal predecessors, (54116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 54116 transitions. [2022-02-15 13:52:41,168 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 54116 transitions. Word has length 47 [2022-02-15 13:52:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:41,168 INFO L470 AbstractCegarLoop]: Abstraction has 14952 states and 54116 transitions. [2022-02-15 13:52:41,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:41,168 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 54116 transitions. [2022-02-15 13:52:41,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:41,196 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:41,196 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:41,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-02-15 13:52:41,197 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:41,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:41,197 INFO L85 PathProgramCache]: Analyzing trace with hash -533248479, now seen corresponding path program 254 times [2022-02-15 13:52:41,197 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:41,197 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691242491] [2022-02-15 13:52:41,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:41,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:41,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:41,376 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691242491] [2022-02-15 13:52:41,376 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691242491] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:41,376 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:41,376 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:41,376 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953171368] [2022-02-15 13:52:41,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:41,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:41,377 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:41,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:41,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:41,377 INFO L87 Difference]: Start difference. First operand 14952 states and 54116 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:42,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:42,455 INFO L93 Difference]: Finished difference Result 16945 states and 61030 transitions. [2022-02-15 13:52:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:52:42,455 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:42,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:42,499 INFO L225 Difference]: With dead ends: 16945 [2022-02-15 13:52:42,499 INFO L226 Difference]: Without dead ends: 16848 [2022-02-15 13:52:42,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:52:42,499 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 499 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:42,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1542 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3008 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:52:42,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16848 states. [2022-02-15 13:52:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16848 to 14952. [2022-02-15 13:52:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14952 states, 14951 states have (on average 3.619557220252826) internal successors, (54116), 14951 states have internal predecessors, (54116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:42,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14952 states to 14952 states and 54116 transitions. [2022-02-15 13:52:42,851 INFO L78 Accepts]: Start accepts. Automaton has 14952 states and 54116 transitions. Word has length 47 [2022-02-15 13:52:42,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:42,851 INFO L470 AbstractCegarLoop]: Abstraction has 14952 states and 54116 transitions. [2022-02-15 13:52:42,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:42,851 INFO L276 IsEmpty]: Start isEmpty. Operand 14952 states and 54116 transitions. [2022-02-15 13:52:42,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:42,880 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:42,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:42,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-02-15 13:52:42,881 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:42,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:42,882 INFO L85 PathProgramCache]: Analyzing trace with hash -530574653, now seen corresponding path program 255 times [2022-02-15 13:52:42,882 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:42,882 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896113870] [2022-02-15 13:52:42,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:42,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:43,064 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:43,064 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896113870] [2022-02-15 13:52:43,064 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896113870] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:43,064 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:43,064 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:43,064 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036166607] [2022-02-15 13:52:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:43,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:43,064 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:43,065 INFO L87 Difference]: Start difference. First operand 14952 states and 54116 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:44,483 INFO L93 Difference]: Finished difference Result 16846 states and 60725 transitions. [2022-02-15 13:52:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:52:44,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:44,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:44,528 INFO L225 Difference]: With dead ends: 16846 [2022-02-15 13:52:44,528 INFO L226 Difference]: Without dead ends: 16737 [2022-02-15 13:52:44,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:52:44,529 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 500 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 3156 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:44,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 1614 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3156 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:52:44,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16737 states. [2022-02-15 13:52:44,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16737 to 14940. [2022-02-15 13:52:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:44,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2022-02-15 13:52:44,894 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2022-02-15 13:52:44,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:44,894 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2022-02-15 13:52:44,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:44,894 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2022-02-15 13:52:44,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:44,923 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:44,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:44,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-02-15 13:52:44,924 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:44,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1839046325, now seen corresponding path program 256 times [2022-02-15 13:52:44,924 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:44,924 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047788262] [2022-02-15 13:52:44,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:44,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:45,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:45,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:45,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047788262] [2022-02-15 13:52:45,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047788262] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:45,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:45,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:45,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516861129] [2022-02-15 13:52:45,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:45,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:45,144 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:45,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:45,145 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:47,080 INFO L93 Difference]: Finished difference Result 17112 states and 61565 transitions. [2022-02-15 13:52:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:52:47,085 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:47,129 INFO L225 Difference]: With dead ends: 17112 [2022-02-15 13:52:47,130 INFO L226 Difference]: Without dead ends: 16991 [2022-02-15 13:52:47,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=2588, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:52:47,132 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 605 mSDsluCounter, 3091 mSDsCounter, 0 mSdLazyCounter, 3597 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:47,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [605 Valid, 1814 Invalid, 3658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3597 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:52:47,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16991 states. [2022-02-15 13:52:47,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16991 to 14940. [2022-02-15 13:52:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2022-02-15 13:52:47,651 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2022-02-15 13:52:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:47,651 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2022-02-15 13:52:47,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2022-02-15 13:52:47,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:47,680 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:47,680 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:47,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-02-15 13:52:47,680 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:47,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:47,680 INFO L85 PathProgramCache]: Analyzing trace with hash -267624889, now seen corresponding path program 257 times [2022-02-15 13:52:47,680 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:47,681 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908855322] [2022-02-15 13:52:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:47,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:47,925 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:47,925 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908855322] [2022-02-15 13:52:47,925 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908855322] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:47,925 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:47,926 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:47,926 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510108347] [2022-02-15 13:52:47,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:47,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:47,926 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:47,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:47,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:47,926 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:50,054 INFO L93 Difference]: Finished difference Result 17853 states and 64157 transitions. [2022-02-15 13:52:50,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-02-15 13:52:50,054 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:50,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:50,098 INFO L225 Difference]: With dead ends: 17853 [2022-02-15 13:52:50,098 INFO L226 Difference]: Without dead ends: 17758 [2022-02-15 13:52:50,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=374, Invalid=3786, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 13:52:50,099 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 682 mSDsluCounter, 3553 mSDsCounter, 0 mSdLazyCounter, 4359 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 4435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 4359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:50,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 2310 Invalid, 4435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 4359 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:52:50,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17758 states. [2022-02-15 13:52:50,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17758 to 14940. [2022-02-15 13:52:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:50,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2022-02-15 13:52:50,495 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2022-02-15 13:52:50,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:50,495 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2022-02-15 13:52:50,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:50,495 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2022-02-15 13:52:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:50,525 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:50,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:50,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-02-15 13:52:50,526 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 31266789, now seen corresponding path program 258 times [2022-02-15 13:52:50,526 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:50,526 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170177632] [2022-02-15 13:52:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:50,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:50,696 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:50,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170177632] [2022-02-15 13:52:50,696 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170177632] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:50,696 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:50,696 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:50,696 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679486799] [2022-02-15 13:52:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:50,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:50,696 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:50,697 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:51,841 INFO L93 Difference]: Finished difference Result 16935 states and 60999 transitions. [2022-02-15 13:52:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:52:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:51,882 INFO L225 Difference]: With dead ends: 16935 [2022-02-15 13:52:51,882 INFO L226 Difference]: Without dead ends: 16838 [2022-02-15 13:52:51,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=1696, Unknown=0, NotChecked=0, Total=1892 [2022-02-15 13:52:51,885 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 503 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 3081 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 3114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:51,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1556 Invalid, 3114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3081 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:52:51,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16838 states. [2022-02-15 13:52:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16838 to 14940. [2022-02-15 13:52:52,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6201887676551308) internal successors, (54082), 14939 states have internal predecessors, (54082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54082 transitions. [2022-02-15 13:52:52,176 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54082 transitions. Word has length 47 [2022-02-15 13:52:52,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:52,176 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54082 transitions. [2022-02-15 13:52:52,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:52,176 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54082 transitions. [2022-02-15 13:52:52,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:52,204 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:52,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:52,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-02-15 13:52:52,205 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:52,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:52,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1694153721, now seen corresponding path program 259 times [2022-02-15 13:52:52,205 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:52,205 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827389656] [2022-02-15 13:52:52,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:52,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:52,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:52,371 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:52,371 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827389656] [2022-02-15 13:52:52,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827389656] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:52,372 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:52,372 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:52,372 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122805182] [2022-02-15 13:52:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:52,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:52,372 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:52,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:52,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:52,372 INFO L87 Difference]: Start difference. First operand 14940 states and 54082 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:53,582 INFO L93 Difference]: Finished difference Result 16836 states and 60694 transitions. [2022-02-15 13:52:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:52:53,582 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:53,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:53,624 INFO L225 Difference]: With dead ends: 16836 [2022-02-15 13:52:53,624 INFO L226 Difference]: Without dead ends: 16733 [2022-02-15 13:52:53,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:52:53,625 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 495 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 3248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:53,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 1623 Invalid, 3248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:52:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16733 states. [2022-02-15 13:52:53,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16733 to 14936. [2022-02-15 13:52:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.6204887847338467) internal successors, (54072), 14935 states have internal predecessors, (54072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:53,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54072 transitions. [2022-02-15 13:52:53,915 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54072 transitions. Word has length 47 [2022-02-15 13:52:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:53,915 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54072 transitions. [2022-02-15 13:52:53,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54072 transitions. [2022-02-15 13:52:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:53,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:53,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:53,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-02-15 13:52:53,942 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 376457381, now seen corresponding path program 260 times [2022-02-15 13:52:53,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:53,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804639268] [2022-02-15 13:52:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:53,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:54,148 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:54,148 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804639268] [2022-02-15 13:52:54,149 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804639268] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:54,149 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:54,149 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:52:54,149 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20998501] [2022-02-15 13:52:54,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:54,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:52:54,149 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:52:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:52:54,149 INFO L87 Difference]: Start difference. First operand 14936 states and 54072 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:55,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:55,609 INFO L93 Difference]: Finished difference Result 16839 states and 60748 transitions. [2022-02-15 13:52:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:52:55,609 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:55,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:55,651 INFO L225 Difference]: With dead ends: 16839 [2022-02-15 13:52:55,651 INFO L226 Difference]: Without dead ends: 16702 [2022-02-15 13:52:55,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=2026, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:52:55,652 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 488 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2914 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:55,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1544 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2914 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:52:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16702 states. [2022-02-15 13:52:55,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16702 to 14954. [2022-02-15 13:52:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 3.619139971911991) internal successors, (54117), 14953 states have internal predecessors, (54117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 54117 transitions. [2022-02-15 13:52:56,019 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 54117 transitions. Word has length 47 [2022-02-15 13:52:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:56,020 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 54117 transitions. [2022-02-15 13:52:56,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 54117 transitions. [2022-02-15 13:52:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:56,051 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:56,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:56,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-02-15 13:52:56,052 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash -432483227, now seen corresponding path program 261 times [2022-02-15 13:52:56,052 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:56,052 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971699092] [2022-02-15 13:52:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:56,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:56,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:56,302 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:56,302 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971699092] [2022-02-15 13:52:56,302 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971699092] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:56,302 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:56,302 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:56,302 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496191480] [2022-02-15 13:52:56,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:56,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:56,302 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:56,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:56,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:56,303 INFO L87 Difference]: Start difference. First operand 14954 states and 54117 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:52:57,915 INFO L93 Difference]: Finished difference Result 16823 states and 60680 transitions. [2022-02-15 13:52:57,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:52:57,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:52:57,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:52:57,956 INFO L225 Difference]: With dead ends: 16823 [2022-02-15 13:52:57,956 INFO L226 Difference]: Without dead ends: 16678 [2022-02-15 13:52:57,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2022-02-15 13:52:57,957 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 554 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 3270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:52:57,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 1660 Invalid, 3270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:52:57,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16678 states. [2022-02-15 13:52:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16678 to 14954. [2022-02-15 13:52:58,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 3.618738714639203) internal successors, (54111), 14953 states have internal predecessors, (54111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 54111 transitions. [2022-02-15 13:52:58,239 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 54111 transitions. Word has length 47 [2022-02-15 13:52:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:52:58,239 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 54111 transitions. [2022-02-15 13:52:58,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:52:58,239 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 54111 transitions. [2022-02-15 13:52:58,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:52:58,266 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:52:58,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:52:58,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-02-15 13:52:58,267 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:52:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:52:58,267 INFO L85 PathProgramCache]: Analyzing trace with hash 467412551, now seen corresponding path program 262 times [2022-02-15 13:52:58,267 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:52:58,267 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550198529] [2022-02-15 13:52:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:52:58,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:52:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:52:58,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:52:58,432 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:52:58,432 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550198529] [2022-02-15 13:52:58,432 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550198529] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:52:58,432 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:52:58,432 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:52:58,432 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120264078] [2022-02-15 13:52:58,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:52:58,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:52:58,433 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:52:58,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:52:58,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:52:58,433 INFO L87 Difference]: Start difference. First operand 14954 states and 54111 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:01,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:01,135 INFO L93 Difference]: Finished difference Result 21637 states and 78515 transitions. [2022-02-15 13:53:01,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 13:53:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:01,190 INFO L225 Difference]: With dead ends: 21637 [2022-02-15 13:53:01,190 INFO L226 Difference]: Without dead ends: 21500 [2022-02-15 13:53:01,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2703 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=728, Invalid=7644, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 13:53:01,191 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 851 mSDsluCounter, 4424 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 5903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:01,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3131 Invalid, 5903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:53:01,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21500 states. [2022-02-15 13:53:01,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21500 to 14942. [2022-02-15 13:53:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14942 states, 14941 states have (on average 3.620038819356134) internal successors, (54087), 14941 states have internal predecessors, (54087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14942 states to 14942 states and 54087 transitions. [2022-02-15 13:53:01,519 INFO L78 Accepts]: Start accepts. Automaton has 14942 states and 54087 transitions. Word has length 47 [2022-02-15 13:53:01,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:01,519 INFO L470 AbstractCegarLoop]: Abstraction has 14942 states and 54087 transitions. [2022-02-15 13:53:01,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:01,520 INFO L276 IsEmpty]: Start isEmpty. Operand 14942 states and 54087 transitions. [2022-02-15 13:53:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:01,547 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:01,547 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:01,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-02-15 13:53:01,547 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -383239357, now seen corresponding path program 263 times [2022-02-15 13:53:01,547 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:01,547 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558817463] [2022-02-15 13:53:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:01,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:01,712 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:01,712 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558817463] [2022-02-15 13:53:01,712 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558817463] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:01,712 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:01,712 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:01,712 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110649784] [2022-02-15 13:53:01,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:01,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:01,713 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:01,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:01,713 INFO L87 Difference]: Start difference. First operand 14942 states and 54087 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:04,538 INFO L93 Difference]: Finished difference Result 22266 states and 81144 transitions. [2022-02-15 13:53:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-02-15 13:53:04,538 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:04,594 INFO L225 Difference]: With dead ends: 22266 [2022-02-15 13:53:04,594 INFO L226 Difference]: Without dead ends: 22159 [2022-02-15 13:53:04,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=702, Invalid=7854, Unknown=0, NotChecked=0, Total=8556 [2022-02-15 13:53:04,595 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 829 mSDsluCounter, 4979 mSDsCounter, 0 mSdLazyCounter, 6424 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 3537 SdHoareTripleChecker+Invalid, 6570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 6424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:04,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 3537 Invalid, 6570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 6424 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-02-15 13:53:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22159 states. [2022-02-15 13:53:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22159 to 14930. [2022-02-15 13:53:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14930 states, 14929 states have (on average 3.6197334047826377) internal successors, (54039), 14929 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14930 states to 14930 states and 54039 transitions. [2022-02-15 13:53:04,922 INFO L78 Accepts]: Start accepts. Automaton has 14930 states and 54039 transitions. Word has length 47 [2022-02-15 13:53:04,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:04,922 INFO L470 AbstractCegarLoop]: Abstraction has 14930 states and 54039 transitions. [2022-02-15 13:53:04,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:04,922 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states and 54039 transitions. [2022-02-15 13:53:04,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:04,951 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:04,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:04,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-02-15 13:53:04,951 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:04,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:04,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1297362089, now seen corresponding path program 264 times [2022-02-15 13:53:04,951 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:04,952 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659085305] [2022-02-15 13:53:04,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:04,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:05,116 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:05,116 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659085305] [2022-02-15 13:53:05,116 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659085305] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:05,116 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:05,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:05,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525184841] [2022-02-15 13:53:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:05,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:05,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:05,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:05,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:05,117 INFO L87 Difference]: Start difference. First operand 14930 states and 54039 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:06,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:06,531 INFO L93 Difference]: Finished difference Result 16979 states and 61149 transitions. [2022-02-15 13:53:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-02-15 13:53:06,532 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:06,574 INFO L225 Difference]: With dead ends: 16979 [2022-02-15 13:53:06,574 INFO L226 Difference]: Without dead ends: 16858 [2022-02-15 13:53:06,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=2690, Unknown=0, NotChecked=0, Total=2970 [2022-02-15 13:53:06,574 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 591 mSDsluCounter, 2797 mSDsCounter, 0 mSdLazyCounter, 3294 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 3358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 3294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:06,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [591 Valid, 1688 Invalid, 3358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 3294 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:06,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16858 states. [2022-02-15 13:53:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16858 to 14930. [2022-02-15 13:53:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14930 states, 14929 states have (on average 3.6197334047826377) internal successors, (54039), 14929 states have internal predecessors, (54039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:06,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14930 states to 14930 states and 54039 transitions. [2022-02-15 13:53:06,846 INFO L78 Accepts]: Start accepts. Automaton has 14930 states and 54039 transitions. Word has length 47 [2022-02-15 13:53:06,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:06,847 INFO L470 AbstractCegarLoop]: Abstraction has 14930 states and 54039 transitions. [2022-02-15 13:53:06,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:06,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14930 states and 54039 transitions. [2022-02-15 13:53:06,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:06,874 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:06,874 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:06,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-02-15 13:53:06,874 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1426183771, now seen corresponding path program 265 times [2022-02-15 13:53:06,874 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:06,874 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683558802] [2022-02-15 13:53:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:06,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:07,037 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:07,037 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683558802] [2022-02-15 13:53:07,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683558802] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:07,038 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:07,038 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:07,038 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066844216] [2022-02-15 13:53:07,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:07,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:07,038 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:07,038 INFO L87 Difference]: Start difference. First operand 14930 states and 54039 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:08,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:08,804 INFO L93 Difference]: Finished difference Result 17637 states and 63497 transitions. [2022-02-15 13:53:08,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 13:53:08,805 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:08,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:08,848 INFO L225 Difference]: With dead ends: 17637 [2022-02-15 13:53:08,848 INFO L226 Difference]: Without dead ends: 17393 [2022-02-15 13:53:08,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1099 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=366, Invalid=3794, Unknown=0, NotChecked=0, Total=4160 [2022-02-15 13:53:08,848 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 615 mSDsluCounter, 3739 mSDsCounter, 0 mSdLazyCounter, 4510 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 4589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 4510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:08,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 2429 Invalid, 4589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 4510 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:53:08,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17393 states. [2022-02-15 13:53:09,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17393 to 14912. [2022-02-15 13:53:09,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14912 states, 14911 states have (on average 3.620682717456911) internal successors, (53988), 14911 states have internal predecessors, (53988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14912 states to 14912 states and 53988 transitions. [2022-02-15 13:53:09,211 INFO L78 Accepts]: Start accepts. Automaton has 14912 states and 53988 transitions. Word has length 47 [2022-02-15 13:53:09,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:09,211 INFO L470 AbstractCegarLoop]: Abstraction has 14912 states and 53988 transitions. [2022-02-15 13:53:09,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 14912 states and 53988 transitions. [2022-02-15 13:53:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:09,239 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:09,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:09,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-02-15 13:53:09,239 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:09,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1127292093, now seen corresponding path program 266 times [2022-02-15 13:53:09,239 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:09,239 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335162847] [2022-02-15 13:53:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:09,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:09,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:09,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:09,443 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335162847] [2022-02-15 13:53:09,443 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335162847] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:09,443 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:09,443 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:53:09,443 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938882536] [2022-02-15 13:53:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:09,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:53:09,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:09,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:53:09,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:53:09,444 INFO L87 Difference]: Start difference. First operand 14912 states and 53988 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:10,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:10,852 INFO L93 Difference]: Finished difference Result 16790 states and 60541 transitions. [2022-02-15 13:53:10,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:53:10,852 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:10,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:10,893 INFO L225 Difference]: With dead ends: 16790 [2022-02-15 13:53:10,893 INFO L226 Difference]: Without dead ends: 16693 [2022-02-15 13:53:10,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=1865, Unknown=0, NotChecked=0, Total=2070 [2022-02-15 13:53:10,894 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 458 mSDsluCounter, 2665 mSDsCounter, 0 mSdLazyCounter, 3082 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 3082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:10,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 1606 Invalid, 3116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 3082 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:53:10,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16693 states. [2022-02-15 13:53:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16693 to 14912. [2022-02-15 13:53:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14912 states, 14911 states have (on average 3.620682717456911) internal successors, (53988), 14911 states have internal predecessors, (53988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14912 states to 14912 states and 53988 transitions. [2022-02-15 13:53:11,173 INFO L78 Accepts]: Start accepts. Automaton has 14912 states and 53988 transitions. Word has length 47 [2022-02-15 13:53:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:11,173 INFO L470 AbstractCegarLoop]: Abstraction has 14912 states and 53988 transitions. [2022-02-15 13:53:11,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 14912 states and 53988 transitions. [2022-02-15 13:53:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:11,200 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:11,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:11,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-02-15 13:53:11,200 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1442254693, now seen corresponding path program 267 times [2022-02-15 13:53:11,201 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:11,201 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768355712] [2022-02-15 13:53:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:11,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:11,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:11,412 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:11,412 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768355712] [2022-02-15 13:53:11,412 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768355712] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:11,412 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:11,412 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:11,412 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886855775] [2022-02-15 13:53:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:11,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:11,413 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:11,413 INFO L87 Difference]: Start difference. First operand 14912 states and 53988 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:13,045 INFO L93 Difference]: Finished difference Result 16691 states and 60236 transitions. [2022-02-15 13:53:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-02-15 13:53:13,045 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:13,089 INFO L225 Difference]: With dead ends: 16691 [2022-02-15 13:53:13,089 INFO L226 Difference]: Without dead ends: 16574 [2022-02-15 13:53:13,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=1954, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:53:13,089 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 461 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 3092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:13,089 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1601 Invalid, 3092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:53:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16574 states. [2022-02-15 13:53:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16574 to 14900. [2022-02-15 13:53:13,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14900 states, 14899 states have (on average 3.6210483925095645) internal successors, (53950), 14899 states have internal predecessors, (53950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14900 states to 14900 states and 53950 transitions. [2022-02-15 13:53:13,405 INFO L78 Accepts]: Start accepts. Automaton has 14900 states and 53950 transitions. Word has length 47 [2022-02-15 13:53:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:13,405 INFO L470 AbstractCegarLoop]: Abstraction has 14900 states and 53950 transitions. [2022-02-15 13:53:13,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:13,405 INFO L276 IsEmpty]: Start isEmpty. Operand 14900 states and 53950 transitions. [2022-02-15 13:53:13,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:13,436 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:13,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:13,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-02-15 13:53:13,437 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:13,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:13,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1270894023, now seen corresponding path program 268 times [2022-02-15 13:53:13,437 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:13,437 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902244116] [2022-02-15 13:53:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:13,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:13,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:13,656 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:13,656 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902244116] [2022-02-15 13:53:13,656 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902244116] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:13,657 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:13,657 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:13,657 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715227845] [2022-02-15 13:53:13,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:13,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:13,657 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:13,657 INFO L87 Difference]: Start difference. First operand 14900 states and 53950 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:15,405 INFO L93 Difference]: Finished difference Result 17175 states and 61913 transitions. [2022-02-15 13:53:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:53:15,405 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:15,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:15,453 INFO L225 Difference]: With dead ends: 17175 [2022-02-15 13:53:15,454 INFO L226 Difference]: Without dead ends: 17048 [2022-02-15 13:53:15,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=269, Invalid=2593, Unknown=0, NotChecked=0, Total=2862 [2022-02-15 13:53:15,454 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 621 mSDsluCounter, 2937 mSDsCounter, 0 mSdLazyCounter, 3465 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 3517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 3465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:15,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1725 Invalid, 3517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 3465 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:53:15,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2022-02-15 13:53:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 14920. [2022-02-15 13:53:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14920 states, 14919 states have (on average 3.6200817749178897) internal successors, (54008), 14919 states have internal predecessors, (54008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14920 states to 14920 states and 54008 transitions. [2022-02-15 13:53:15,867 INFO L78 Accepts]: Start accepts. Automaton has 14920 states and 54008 transitions. Word has length 47 [2022-02-15 13:53:15,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:15,867 INFO L470 AbstractCegarLoop]: Abstraction has 14920 states and 54008 transitions. [2022-02-15 13:53:15,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:15,867 INFO L276 IsEmpty]: Start isEmpty. Operand 14920 states and 54008 transitions. [2022-02-15 13:53:15,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:15,902 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:15,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:15,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-02-15 13:53:15,902 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:15,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:15,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1673324669, now seen corresponding path program 269 times [2022-02-15 13:53:15,902 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:15,902 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359392954] [2022-02-15 13:53:15,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:15,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:16,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:16,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359392954] [2022-02-15 13:53:16,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359392954] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:16,131 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:16,131 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:16,131 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420596840] [2022-02-15 13:53:16,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:16,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:16,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:16,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:16,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:16,132 INFO L87 Difference]: Start difference. First operand 14920 states and 54008 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:19,444 INFO L93 Difference]: Finished difference Result 19971 states and 72303 transitions. [2022-02-15 13:53:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-02-15 13:53:19,444 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:19,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:19,518 INFO L225 Difference]: With dead ends: 19971 [2022-02-15 13:53:19,518 INFO L226 Difference]: Without dead ends: 19882 [2022-02-15 13:53:19,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1896 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=576, Invalid=5744, Unknown=0, NotChecked=0, Total=6320 [2022-02-15 13:53:19,519 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 834 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 5107 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 5234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 5107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:19,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 2717 Invalid, 5234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 5107 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:53:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19882 states. [2022-02-15 13:53:19,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19882 to 14928. [2022-02-15 13:53:19,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14928 states, 14927 states have (on average 3.620017418101427) internal successors, (54036), 14927 states have internal predecessors, (54036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:19,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14928 states to 14928 states and 54036 transitions. [2022-02-15 13:53:19,980 INFO L78 Accepts]: Start accepts. Automaton has 14928 states and 54036 transitions. Word has length 47 [2022-02-15 13:53:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:19,981 INFO L470 AbstractCegarLoop]: Abstraction has 14928 states and 54036 transitions. [2022-02-15 13:53:19,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:19,981 INFO L276 IsEmpty]: Start isEmpty. Operand 14928 states and 54036 transitions. [2022-02-15 13:53:20,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:20,008 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:20,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:20,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-02-15 13:53:20,008 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:20,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash 822672761, now seen corresponding path program 270 times [2022-02-15 13:53:20,009 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:20,009 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957854934] [2022-02-15 13:53:20,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:20,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:20,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:20,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:20,272 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:20,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957854934] [2022-02-15 13:53:20,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957854934] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:20,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:20,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:20,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315923660] [2022-02-15 13:53:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:20,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:20,273 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:20,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:20,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:20,273 INFO L87 Difference]: Start difference. First operand 14928 states and 54036 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:23,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:23,449 INFO L93 Difference]: Finished difference Result 20913 states and 75964 transitions. [2022-02-15 13:53:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-02-15 13:53:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:23,503 INFO L225 Difference]: With dead ends: 20913 [2022-02-15 13:53:23,503 INFO L226 Difference]: Without dead ends: 20810 [2022-02-15 13:53:23,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2691 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=663, Invalid=7709, Unknown=0, NotChecked=0, Total=8372 [2022-02-15 13:53:23,504 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 851 mSDsluCounter, 4857 mSDsCounter, 0 mSdLazyCounter, 5960 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 6082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 5960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:23,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 3257 Invalid, 6082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 5960 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:53:23,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20810 states. [2022-02-15 13:53:23,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20810 to 14924. [2022-02-15 13:53:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14924 states, 14923 states have (on average 3.620853715740803) internal successors, (54034), 14923 states have internal predecessors, (54034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:23,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 54034 transitions. [2022-02-15 13:53:23,968 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 54034 transitions. Word has length 47 [2022-02-15 13:53:23,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:23,968 INFO L470 AbstractCegarLoop]: Abstraction has 14924 states and 54034 transitions. [2022-02-15 13:53:23,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:23,969 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 54034 transitions. [2022-02-15 13:53:23,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:23,997 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:23,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:23,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-02-15 13:53:23,997 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:23,998 INFO L85 PathProgramCache]: Analyzing trace with hash 271029335, now seen corresponding path program 271 times [2022-02-15 13:53:23,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:23,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984679292] [2022-02-15 13:53:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:23,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:24,163 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:24,163 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984679292] [2022-02-15 13:53:24,163 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984679292] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:24,163 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:24,163 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:24,163 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862911331] [2022-02-15 13:53:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:24,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:24,163 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:24,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:24,164 INFO L87 Difference]: Start difference. First operand 14924 states and 54034 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:25,339 INFO L93 Difference]: Finished difference Result 17047 states and 61393 transitions. [2022-02-15 13:53:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:53:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:25,380 INFO L225 Difference]: With dead ends: 17047 [2022-02-15 13:53:25,380 INFO L226 Difference]: Without dead ends: 16920 [2022-02-15 13:53:25,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1956, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:53:25,381 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 542 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:25,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1678 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16920 states. [2022-02-15 13:53:25,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16920 to 14948. [2022-02-15 13:53:25,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619589215227136) internal successors, (54102), 14947 states have internal predecessors, (54102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:25,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54102 transitions. [2022-02-15 13:53:25,665 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54102 transitions. Word has length 47 [2022-02-15 13:53:25,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:25,666 INFO L470 AbstractCegarLoop]: Abstraction has 14948 states and 54102 transitions. [2022-02-15 13:53:25,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:25,666 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54102 transitions. [2022-02-15 13:53:25,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:25,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:25,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:25,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-02-15 13:53:25,697 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2098400595, now seen corresponding path program 272 times [2022-02-15 13:53:25,698 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:25,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692998743] [2022-02-15 13:53:25,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:25,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:25,870 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:25,870 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692998743] [2022-02-15 13:53:25,870 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692998743] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:25,870 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:25,870 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:25,870 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769868121] [2022-02-15 13:53:25,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:25,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:25,870 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:25,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:25,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:25,870 INFO L87 Difference]: Start difference. First operand 14948 states and 54102 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:27,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:27,308 INFO L93 Difference]: Finished difference Result 17240 states and 61985 transitions. [2022-02-15 13:53:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:53:27,308 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:27,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:27,352 INFO L225 Difference]: With dead ends: 17240 [2022-02-15 13:53:27,352 INFO L226 Difference]: Without dead ends: 17143 [2022-02-15 13:53:27,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=2410, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:53:27,353 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 615 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 3549 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:27,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [615 Valid, 1827 Invalid, 3595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3549 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:53:27,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17143 states. [2022-02-15 13:53:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17143 to 14948. [2022-02-15 13:53:27,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 3.619589215227136) internal successors, (54102), 14947 states have internal predecessors, (54102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:27,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 54102 transitions. [2022-02-15 13:53:27,642 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 54102 transitions. Word has length 47 [2022-02-15 13:53:27,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:27,642 INFO L470 AbstractCegarLoop]: Abstraction has 14948 states and 54102 transitions. [2022-02-15 13:53:27,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:27,642 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 54102 transitions. [2022-02-15 13:53:27,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:27,669 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:27,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:27,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-02-15 13:53:27,670 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:27,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2101074421, now seen corresponding path program 273 times [2022-02-15 13:53:27,670 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:27,670 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255577013] [2022-02-15 13:53:27,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:27,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:27,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:27,834 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:27,834 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255577013] [2022-02-15 13:53:27,834 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255577013] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:27,834 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:27,834 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:27,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616243118] [2022-02-15 13:53:27,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:27,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:27,834 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:27,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:27,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:27,835 INFO L87 Difference]: Start difference. First operand 14948 states and 54102 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:28,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:28,997 INFO L93 Difference]: Finished difference Result 17017 states and 61290 transitions. [2022-02-15 13:53:28,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:53:28,997 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:28,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:29,041 INFO L225 Difference]: With dead ends: 17017 [2022-02-15 13:53:29,042 INFO L226 Difference]: Without dead ends: 16908 [2022-02-15 13:53:29,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:53:29,043 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 549 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:29,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1565 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:53:29,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16908 states. [2022-02-15 13:53:29,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16908 to 14936. [2022-02-15 13:53:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.620220957482424) internal successors, (54068), 14935 states have internal predecessors, (54068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54068 transitions. [2022-02-15 13:53:29,385 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54068 transitions. Word has length 47 [2022-02-15 13:53:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:29,385 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54068 transitions. [2022-02-15 13:53:29,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54068 transitions. [2022-02-15 13:53:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:29,413 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:29,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:29,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-02-15 13:53:29,413 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:29,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 792602749, now seen corresponding path program 274 times [2022-02-15 13:53:29,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:29,413 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060341367] [2022-02-15 13:53:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:29,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:29,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:29,585 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:29,585 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060341367] [2022-02-15 13:53:29,585 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060341367] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:29,585 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:29,585 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:29,585 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423333431] [2022-02-15 13:53:29,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:29,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:29,585 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:29,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:29,586 INFO L87 Difference]: Start difference. First operand 14936 states and 54068 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:31,004 INFO L93 Difference]: Finished difference Result 17160 states and 61757 transitions. [2022-02-15 13:53:31,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-02-15 13:53:31,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:31,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:31,046 INFO L225 Difference]: With dead ends: 17160 [2022-02-15 13:53:31,046 INFO L226 Difference]: Without dead ends: 17039 [2022-02-15 13:53:31,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=292, Invalid=2900, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 13:53:31,047 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 609 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 3608 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 3674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:31,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [609 Valid, 1791 Invalid, 3674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3608 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17039 states. [2022-02-15 13:53:31,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17039 to 14936. [2022-02-15 13:53:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14936 states, 14935 states have (on average 3.620220957482424) internal successors, (54068), 14935 states have internal predecessors, (54068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54068 transitions. [2022-02-15 13:53:31,353 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54068 transitions. Word has length 47 [2022-02-15 13:53:31,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:31,353 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54068 transitions. [2022-02-15 13:53:31,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:31,354 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54068 transitions. [2022-02-15 13:53:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:31,381 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:31,381 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:31,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-02-15 13:53:31,382 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1930943111, now seen corresponding path program 275 times [2022-02-15 13:53:31,382 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:31,382 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069903228] [2022-02-15 13:53:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:31,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:31,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:31,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069903228] [2022-02-15 13:53:31,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069903228] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:31,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:31,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:31,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841334305] [2022-02-15 13:53:31,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:31,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:31,595 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:31,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:31,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:31,595 INFO L87 Difference]: Start difference. First operand 14936 states and 54068 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:33,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:33,537 INFO L93 Difference]: Finished difference Result 18625 states and 66999 transitions. [2022-02-15 13:53:33,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 13:53:33,537 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:33,582 INFO L225 Difference]: With dead ends: 18625 [2022-02-15 13:53:33,582 INFO L226 Difference]: Without dead ends: 18530 [2022-02-15 13:53:33,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=404, Invalid=4288, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:53:33,583 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 722 mSDsluCounter, 4020 mSDsCounter, 0 mSdLazyCounter, 4929 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 5008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 4929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:33,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 2628 Invalid, 5008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 4929 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:53:33,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2022-02-15 13:53:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 14944. [2022-02-15 13:53:33,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14944 states, 14943 states have (on average 3.620156595061233) internal successors, (54096), 14943 states have internal predecessors, (54096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14944 states to 14944 states and 54096 transitions. [2022-02-15 13:53:33,887 INFO L78 Accepts]: Start accepts. Automaton has 14944 states and 54096 transitions. Word has length 47 [2022-02-15 13:53:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:33,887 INFO L470 AbstractCegarLoop]: Abstraction has 14944 states and 54096 transitions. [2022-02-15 13:53:33,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 14944 states and 54096 transitions. [2022-02-15 13:53:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:33,914 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:33,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:33,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-02-15 13:53:33,915 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:33,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1632051433, now seen corresponding path program 276 times [2022-02-15 13:53:33,915 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:33,915 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642147756] [2022-02-15 13:53:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:33,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:33,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:34,080 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:34,080 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642147756] [2022-02-15 13:53:34,080 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642147756] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:34,080 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:34,080 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:34,080 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836018524] [2022-02-15 13:53:34,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:34,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:34,081 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:34,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:34,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:34,081 INFO L87 Difference]: Start difference. First operand 14944 states and 54096 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:35,464 INFO L93 Difference]: Finished difference Result 17238 states and 61982 transitions. [2022-02-15 13:53:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:53:35,465 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:35,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:35,506 INFO L225 Difference]: With dead ends: 17238 [2022-02-15 13:53:35,507 INFO L226 Difference]: Without dead ends: 17141 [2022-02-15 13:53:35,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=260, Invalid=2496, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 13:53:35,507 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 628 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 3332 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 3332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:35,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1710 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 3332 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17141 states. [2022-02-15 13:53:35,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17141 to 14944. [2022-02-15 13:53:35,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14944 states, 14943 states have (on average 3.620156595061233) internal successors, (54096), 14943 states have internal predecessors, (54096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14944 states to 14944 states and 54096 transitions. [2022-02-15 13:53:35,788 INFO L78 Accepts]: Start accepts. Automaton has 14944 states and 54096 transitions. Word has length 47 [2022-02-15 13:53:35,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:35,789 INFO L470 AbstractCegarLoop]: Abstraction has 14944 states and 54096 transitions. [2022-02-15 13:53:35,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14944 states and 54096 transitions. [2022-02-15 13:53:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:35,816 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:35,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:35,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-02-15 13:53:35,816 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:35,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash 937495353, now seen corresponding path program 277 times [2022-02-15 13:53:35,817 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:35,817 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125971629] [2022-02-15 13:53:35,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:35,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:35,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:35,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125971629] [2022-02-15 13:53:35,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125971629] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:35,993 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:35,993 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:35,993 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655278243] [2022-02-15 13:53:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:35,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:35,995 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:35,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:35,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:35,995 INFO L87 Difference]: Start difference. First operand 14944 states and 54096 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:37,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:37,247 INFO L93 Difference]: Finished difference Result 17015 states and 61287 transitions. [2022-02-15 13:53:37,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-02-15 13:53:37,247 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:37,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:37,289 INFO L225 Difference]: With dead ends: 17015 [2022-02-15 13:53:37,289 INFO L226 Difference]: Without dead ends: 16912 [2022-02-15 13:53:37,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=2122, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:53:37,290 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 530 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 3313 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 3313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:37,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1630 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 3313 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2022-02-15 13:53:37,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 14940. [2022-02-15 13:53:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.6204565231943238) internal successors, (54086), 14939 states have internal predecessors, (54086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:37,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54086 transitions. [2022-02-15 13:53:37,690 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54086 transitions. Word has length 47 [2022-02-15 13:53:37,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:37,691 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54086 transitions. [2022-02-15 13:53:37,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:37,691 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54086 transitions. [2022-02-15 13:53:37,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:37,718 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:37,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:37,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-02-15 13:53:37,718 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:37,718 INFO L85 PathProgramCache]: Analyzing trace with hash -644573557, now seen corresponding path program 278 times [2022-02-15 13:53:37,718 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:37,719 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122925069] [2022-02-15 13:53:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:37,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:37,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:37,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122925069] [2022-02-15 13:53:37,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122925069] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:37,910 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:37,910 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:37,911 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131062418] [2022-02-15 13:53:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:37,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:37,911 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:37,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:37,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:37,911 INFO L87 Difference]: Start difference. First operand 14940 states and 54086 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:39,021 INFO L93 Difference]: Finished difference Result 16850 states and 60791 transitions. [2022-02-15 13:53:39,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:53:39,021 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:39,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:39,062 INFO L225 Difference]: With dead ends: 16850 [2022-02-15 13:53:39,063 INFO L226 Difference]: Without dead ends: 16723 [2022-02-15 13:53:39,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:53:39,063 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 484 mSDsluCounter, 2706 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 1554 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:39,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [484 Valid, 1554 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 3119 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:53:39,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16723 states. [2022-02-15 13:53:39,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16723 to 14976. [2022-02-15 13:53:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 14975 states have (on average 3.619365609348915) internal successors, (54200), 14975 states have internal predecessors, (54200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 54200 transitions. [2022-02-15 13:53:39,340 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 54200 transitions. Word has length 47 [2022-02-15 13:53:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:39,340 INFO L470 AbstractCegarLoop]: Abstraction has 14976 states and 54200 transitions. [2022-02-15 13:53:39,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 54200 transitions. [2022-02-15 13:53:39,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:39,368 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:39,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:39,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-02-15 13:53:39,368 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1182797703, now seen corresponding path program 279 times [2022-02-15 13:53:39,369 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:39,369 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527337994] [2022-02-15 13:53:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:39,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:39,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:39,528 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:39,528 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527337994] [2022-02-15 13:53:39,528 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527337994] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:39,529 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:39,529 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:39,529 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404234881] [2022-02-15 13:53:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:39,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:39,529 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:39,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:39,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:39,529 INFO L87 Difference]: Start difference. First operand 14976 states and 54200 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:41,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:41,343 INFO L93 Difference]: Finished difference Result 17053 states and 61418 transitions. [2022-02-15 13:53:41,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:53:41,343 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:41,385 INFO L225 Difference]: With dead ends: 17053 [2022-02-15 13:53:41,386 INFO L226 Difference]: Without dead ends: 16956 [2022-02-15 13:53:41,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:53:41,386 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 564 mSDsluCounter, 3141 mSDsCounter, 0 mSdLazyCounter, 3526 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 3569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:41,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 1811 Invalid, 3569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3526 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:53:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16956 states. [2022-02-15 13:53:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16956 to 14976. [2022-02-15 13:53:41,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 14975 states have (on average 3.619365609348915) internal successors, (54200), 14975 states have internal predecessors, (54200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:41,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 54200 transitions. [2022-02-15 13:53:41,660 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 54200 transitions. Word has length 47 [2022-02-15 13:53:41,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:41,660 INFO L470 AbstractCegarLoop]: Abstraction has 14976 states and 54200 transitions. [2022-02-15 13:53:41,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:41,668 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 54200 transitions. [2022-02-15 13:53:41,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:41,696 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:41,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:41,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-02-15 13:53:41,696 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:41,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1185471529, now seen corresponding path program 280 times [2022-02-15 13:53:41,696 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:41,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781234384] [2022-02-15 13:53:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:41,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:41,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:41,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:41,952 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:41,952 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781234384] [2022-02-15 13:53:41,953 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781234384] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:41,953 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:41,953 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:41,953 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276287551] [2022-02-15 13:53:41,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:41,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:41,953 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:41,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:41,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:41,953 INFO L87 Difference]: Start difference. First operand 14976 states and 54200 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:43,574 INFO L93 Difference]: Finished difference Result 16820 states and 60688 transitions. [2022-02-15 13:53:43,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:53:43,575 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:43,617 INFO L225 Difference]: With dead ends: 16820 [2022-02-15 13:53:43,617 INFO L226 Difference]: Without dead ends: 16711 [2022-02-15 13:53:43,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:53:43,618 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 489 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 3161 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 3197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:43,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1564 Invalid, 3197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3161 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:53:43,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16711 states. [2022-02-15 13:53:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16711 to 14964. [2022-02-15 13:53:43,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14964 states, 14963 states have (on average 3.6194613379669853) internal successors, (54158), 14963 states have internal predecessors, (54158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14964 states to 14964 states and 54158 transitions. [2022-02-15 13:53:44,028 INFO L78 Accepts]: Start accepts. Automaton has 14964 states and 54158 transitions. Word has length 47 [2022-02-15 13:53:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:44,028 INFO L470 AbstractCegarLoop]: Abstraction has 14964 states and 54158 transitions. [2022-02-15 13:53:44,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:44,028 INFO L276 IsEmpty]: Start isEmpty. Operand 14964 states and 54158 transitions. [2022-02-15 13:53:44,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:44,057 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:44,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:44,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-02-15 13:53:44,057 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1285157439, now seen corresponding path program 281 times [2022-02-15 13:53:44,058 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:44,058 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832319702] [2022-02-15 13:53:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:44,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:44,271 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:44,272 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832319702] [2022-02-15 13:53:44,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832319702] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:44,272 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:44,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:53:44,272 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619477290] [2022-02-15 13:53:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:44,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:53:44,272 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:53:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:53:44,272 INFO L87 Difference]: Start difference. First operand 14964 states and 54158 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:45,812 INFO L93 Difference]: Finished difference Result 16909 states and 61029 transitions. [2022-02-15 13:53:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:53:45,813 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:45,857 INFO L225 Difference]: With dead ends: 16909 [2022-02-15 13:53:45,857 INFO L226 Difference]: Without dead ends: 16764 [2022-02-15 13:53:45,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=2031, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:53:45,858 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 480 mSDsluCounter, 2720 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:45,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1603 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 3149 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:53:45,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16764 states. [2022-02-15 13:53:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16764 to 14976. [2022-02-15 13:53:46,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 14975 states have (on average 3.6185642737896493) internal successors, (54188), 14975 states have internal predecessors, (54188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 54188 transitions. [2022-02-15 13:53:46,268 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 54188 transitions. Word has length 47 [2022-02-15 13:53:46,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:46,269 INFO L470 AbstractCegarLoop]: Abstraction has 14976 states and 54188 transitions. [2022-02-15 13:53:46,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:46,269 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 54188 transitions. [2022-02-15 13:53:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:46,296 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:46,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:46,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-02-15 13:53:46,297 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:46,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2002687389, now seen corresponding path program 282 times [2022-02-15 13:53:46,297 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:46,297 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712141174] [2022-02-15 13:53:46,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:46,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:46,535 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:46,535 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712141174] [2022-02-15 13:53:46,535 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712141174] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:46,535 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:46,535 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:46,535 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744462948] [2022-02-15 13:53:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:46,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:46,535 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:46,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:46,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:46,535 INFO L87 Difference]: Start difference. First operand 14976 states and 54188 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:48,076 INFO L93 Difference]: Finished difference Result 16930 states and 61033 transitions. [2022-02-15 13:53:48,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:53:48,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:48,117 INFO L225 Difference]: With dead ends: 16930 [2022-02-15 13:53:48,118 INFO L226 Difference]: Without dead ends: 16833 [2022-02-15 13:53:48,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:53:48,118 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 530 mSDsluCounter, 2845 mSDsCounter, 0 mSdLazyCounter, 3236 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:48,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1669 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3236 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:53:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16833 states. [2022-02-15 13:53:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16833 to 14976. [2022-02-15 13:53:48,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14976 states, 14975 states have (on average 3.6185642737896493) internal successors, (54188), 14975 states have internal predecessors, (54188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:48,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14976 states to 14976 states and 54188 transitions. [2022-02-15 13:53:48,471 INFO L78 Accepts]: Start accepts. Automaton has 14976 states and 54188 transitions. Word has length 47 [2022-02-15 13:53:48,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:48,471 INFO L470 AbstractCegarLoop]: Abstraction has 14976 states and 54188 transitions. [2022-02-15 13:53:48,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:48,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14976 states and 54188 transitions. [2022-02-15 13:53:48,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:48,498 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:48,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:48,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-02-15 13:53:48,499 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:48,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:48,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2005361215, now seen corresponding path program 283 times [2022-02-15 13:53:48,499 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:48,499 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360878915] [2022-02-15 13:53:48,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:48,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:48,662 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:48,662 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360878915] [2022-02-15 13:53:48,662 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360878915] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:48,662 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:48,662 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:48,662 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915647753] [2022-02-15 13:53:48,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:48,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:48,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:48,663 INFO L87 Difference]: Start difference. First operand 14976 states and 54188 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:49,754 INFO L93 Difference]: Finished difference Result 16697 states and 60303 transitions. [2022-02-15 13:53:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:53:49,755 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:49,796 INFO L225 Difference]: With dead ends: 16697 [2022-02-15 13:53:49,796 INFO L226 Difference]: Without dead ends: 16564 [2022-02-15 13:53:49,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=1783, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:53:49,796 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 439 mSDsluCounter, 2569 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:49,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 1510 Invalid, 3070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3035 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:53:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16564 states. [2022-02-15 13:53:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16564 to 14940. [2022-02-15 13:53:50,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14940 states, 14939 states have (on average 3.619921012115938) internal successors, (54078), 14939 states have internal predecessors, (54078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:50,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14940 states to 14940 states and 54078 transitions. [2022-02-15 13:53:50,063 INFO L78 Accepts]: Start accepts. Automaton has 14940 states and 54078 transitions. Word has length 47 [2022-02-15 13:53:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:50,063 INFO L470 AbstractCegarLoop]: Abstraction has 14940 states and 54078 transitions. [2022-02-15 13:53:50,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 14940 states and 54078 transitions. [2022-02-15 13:53:50,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:50,091 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:50,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:50,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-02-15 13:53:50,091 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:50,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:50,091 INFO L85 PathProgramCache]: Analyzing trace with hash -2043862599, now seen corresponding path program 284 times [2022-02-15 13:53:50,091 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:50,091 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556035082] [2022-02-15 13:53:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:50,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:50,259 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:50,259 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556035082] [2022-02-15 13:53:50,260 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556035082] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:50,260 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:50,260 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:50,260 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555053245] [2022-02-15 13:53:50,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:50,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:50,260 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:50,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:50,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:50,260 INFO L87 Difference]: Start difference. First operand 14940 states and 54078 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:51,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:51,726 INFO L93 Difference]: Finished difference Result 17026 states and 61431 transitions. [2022-02-15 13:53:51,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 13:53:51,726 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:51,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:51,767 INFO L225 Difference]: With dead ends: 17026 [2022-02-15 13:53:51,768 INFO L226 Difference]: Without dead ends: 16841 [2022-02-15 13:53:51,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=302, Invalid=2890, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 13:53:51,768 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 592 mSDsluCounter, 2923 mSDsCounter, 0 mSdLazyCounter, 3380 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 3439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:51,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 1724 Invalid, 3439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 3380 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:51,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16841 states. [2022-02-15 13:53:51,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16841 to 14944. [2022-02-15 13:53:52,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14944 states, 14943 states have (on average 3.619621227330523) internal successors, (54088), 14943 states have internal predecessors, (54088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14944 states to 14944 states and 54088 transitions. [2022-02-15 13:53:52,048 INFO L78 Accepts]: Start accepts. Automaton has 14944 states and 54088 transitions. Word has length 47 [2022-02-15 13:53:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:52,048 INFO L470 AbstractCegarLoop]: Abstraction has 14944 states and 54088 transitions. [2022-02-15 13:53:52,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14944 states and 54088 transitions. [2022-02-15 13:53:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:52,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:52,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:52,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-02-15 13:53:52,076 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2133612955, now seen corresponding path program 285 times [2022-02-15 13:53:52,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:52,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815532530] [2022-02-15 13:53:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:52,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:52,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:52,245 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:52,246 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815532530] [2022-02-15 13:53:52,246 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815532530] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:52,246 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:52,246 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:52,246 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351477751] [2022-02-15 13:53:52,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:52,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:52,246 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:52,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:52,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:52,246 INFO L87 Difference]: Start difference. First operand 14944 states and 54088 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:53,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:53,692 INFO L93 Difference]: Finished difference Result 17118 states and 61634 transitions. [2022-02-15 13:53:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-02-15 13:53:53,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:53,734 INFO L225 Difference]: With dead ends: 17118 [2022-02-15 13:53:53,734 INFO L226 Difference]: Without dead ends: 16981 [2022-02-15 13:53:53,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 776 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=305, Invalid=2887, Unknown=0, NotChecked=0, Total=3192 [2022-02-15 13:53:53,734 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 604 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 3420 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 3491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 3420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:53,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 1702 Invalid, 3491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 3420 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:53:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16981 states. [2022-02-15 13:53:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16981 to 14944. [2022-02-15 13:53:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14944 states, 14943 states have (on average 3.619621227330523) internal successors, (54088), 14943 states have internal predecessors, (54088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14944 states to 14944 states and 54088 transitions. [2022-02-15 13:53:54,011 INFO L78 Accepts]: Start accepts. Automaton has 14944 states and 54088 transitions. Word has length 47 [2022-02-15 13:53:54,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:54,011 INFO L470 AbstractCegarLoop]: Abstraction has 14944 states and 54088 transitions. [2022-02-15 13:53:54,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:54,011 INFO L276 IsEmpty]: Start isEmpty. Operand 14944 states and 54088 transitions. [2022-02-15 13:53:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:54,039 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:54,039 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:54,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-02-15 13:53:54,039 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:54,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:54,039 INFO L85 PathProgramCache]: Analyzing trace with hash -589932905, now seen corresponding path program 286 times [2022-02-15 13:53:54,039 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:54,039 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966477749] [2022-02-15 13:53:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:54,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:54,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:54,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:54,213 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:54,213 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966477749] [2022-02-15 13:53:54,213 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966477749] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:54,213 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:54,213 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:54,213 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633021627] [2022-02-15 13:53:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:54,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:54,213 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:54,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:54,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:54,214 INFO L87 Difference]: Start difference. First operand 14944 states and 54088 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:56,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:56,325 INFO L93 Difference]: Finished difference Result 19165 states and 69091 transitions. [2022-02-15 13:53:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-02-15 13:53:56,325 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:56,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:56,371 INFO L225 Difference]: With dead ends: 19165 [2022-02-15 13:53:56,371 INFO L226 Difference]: Without dead ends: 19070 [2022-02-15 13:53:56,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=443, Invalid=4959, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 13:53:56,372 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 768 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 5131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:56,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 2727 Invalid, 5131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:53:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19070 states. [2022-02-15 13:53:56,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19070 to 14984. [2022-02-15 13:53:56,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14984 states, 14983 states have (on average 3.6187679369952614) internal successors, (54220), 14983 states have internal predecessors, (54220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:56,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14984 states to 14984 states and 54220 transitions. [2022-02-15 13:53:56,669 INFO L78 Accepts]: Start accepts. Automaton has 14984 states and 54220 transitions. Word has length 47 [2022-02-15 13:53:56,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:56,669 INFO L470 AbstractCegarLoop]: Abstraction has 14984 states and 54220 transitions. [2022-02-15 13:53:56,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 14984 states and 54220 transitions. [2022-02-15 13:53:56,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:56,697 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:56,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:56,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-02-15 13:53:56,697 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:56,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:56,697 INFO L85 PathProgramCache]: Analyzing trace with hash -291041227, now seen corresponding path program 287 times [2022-02-15 13:53:56,697 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:56,697 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244132365] [2022-02-15 13:53:56,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:56,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:56,860 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:56,860 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244132365] [2022-02-15 13:53:56,860 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244132365] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:56,860 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:56,860 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:56,860 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135668419] [2022-02-15 13:53:56,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:56,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:56,861 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:56,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:56,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:56,861 INFO L87 Difference]: Start difference. First operand 14984 states and 54220 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:58,128 INFO L93 Difference]: Finished difference Result 17129 states and 61672 transitions. [2022-02-15 13:53:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-02-15 13:53:58,128 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:58,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:58,169 INFO L225 Difference]: With dead ends: 17129 [2022-02-15 13:53:58,170 INFO L226 Difference]: Without dead ends: 17032 [2022-02-15 13:53:58,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=2488, Unknown=0, NotChecked=0, Total=2756 [2022-02-15 13:53:58,170 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 589 mSDsluCounter, 2813 mSDsCounter, 0 mSdLazyCounter, 3211 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 3266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 3211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:58,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1638 Invalid, 3266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 3211 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:53:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17032 states. [2022-02-15 13:53:58,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17032 to 14984. [2022-02-15 13:53:58,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14984 states, 14983 states have (on average 3.6187679369952614) internal successors, (54220), 14983 states have internal predecessors, (54220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:58,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14984 states to 14984 states and 54220 transitions. [2022-02-15 13:53:58,505 INFO L78 Accepts]: Start accepts. Automaton has 14984 states and 54220 transitions. Word has length 47 [2022-02-15 13:53:58,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:53:58,505 INFO L470 AbstractCegarLoop]: Abstraction has 14984 states and 54220 transitions. [2022-02-15 13:53:58,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:58,505 INFO L276 IsEmpty]: Start isEmpty. Operand 14984 states and 54220 transitions. [2022-02-15 13:53:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:53:58,533 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:53:58,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:53:58,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-02-15 13:53:58,533 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:53:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:53:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2016461737, now seen corresponding path program 288 times [2022-02-15 13:53:58,533 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:53:58,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053553913] [2022-02-15 13:53:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:53:58,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:53:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:53:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:53:58,693 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:53:58,693 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053553913] [2022-02-15 13:53:58,693 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053553913] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:53:58,693 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:53:58,693 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:53:58,693 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180849517] [2022-02-15 13:53:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:53:58,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:53:58,693 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:53:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:53:58,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:53:58,694 INFO L87 Difference]: Start difference. First operand 14984 states and 54220 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:53:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:53:59,856 INFO L93 Difference]: Finished difference Result 16896 states and 60942 transitions. [2022-02-15 13:53:59,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:53:59,856 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:53:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:53:59,900 INFO L225 Difference]: With dead ends: 16896 [2022-02-15 13:53:59,900 INFO L226 Difference]: Without dead ends: 16797 [2022-02-15 13:53:59,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=228, Invalid=2028, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:53:59,900 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 489 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 3088 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 3088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:53:59,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1515 Invalid, 3133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 3088 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:53:59,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16797 states. [2022-02-15 13:54:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16797 to 14984. [2022-02-15 13:54:00,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14984 states, 14983 states have (on average 3.6186344523793634) internal successors, (54218), 14983 states have internal predecessors, (54218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:00,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14984 states to 14984 states and 54218 transitions. [2022-02-15 13:54:00,250 INFO L78 Accepts]: Start accepts. Automaton has 14984 states and 54218 transitions. Word has length 47 [2022-02-15 13:54:00,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:00,250 INFO L470 AbstractCegarLoop]: Abstraction has 14984 states and 54218 transitions. [2022-02-15 13:54:00,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:00,251 INFO L276 IsEmpty]: Start isEmpty. Operand 14984 states and 54218 transitions. [2022-02-15 13:54:00,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:00,278 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:00,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:00,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-02-15 13:54:00,278 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:00,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:00,279 INFO L85 PathProgramCache]: Analyzing trace with hash -940717173, now seen corresponding path program 289 times [2022-02-15 13:54:00,279 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:00,279 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088736501] [2022-02-15 13:54:00,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:00,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:00,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:00,443 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:00,444 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088736501] [2022-02-15 13:54:00,444 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088736501] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:00,444 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:00,444 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:54:00,444 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128234630] [2022-02-15 13:54:00,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:00,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:54:00,444 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:00,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:54:00,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:54:00,444 INFO L87 Difference]: Start difference. First operand 14984 states and 54218 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:01,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:01,589 INFO L93 Difference]: Finished difference Result 16935 states and 61110 transitions. [2022-02-15 13:54:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:54:01,589 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:01,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:01,632 INFO L225 Difference]: With dead ends: 16935 [2022-02-15 13:54:01,632 INFO L226 Difference]: Without dead ends: 16790 [2022-02-15 13:54:01,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=234, Invalid=2022, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:54:01,633 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 499 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:01,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 1472 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2887 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:54:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16790 states. [2022-02-15 13:54:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16790 to 14996. [2022-02-15 13:54:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14996 states, 14995 states have (on average 3.617739246415472) internal successors, (54248), 14995 states have internal predecessors, (54248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14996 states to 14996 states and 54248 transitions. [2022-02-15 13:54:01,914 INFO L78 Accepts]: Start accepts. Automaton has 14996 states and 54248 transitions. Word has length 47 [2022-02-15 13:54:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 14996 states and 54248 transitions. [2022-02-15 13:54:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 14996 states and 54248 transitions. [2022-02-15 13:54:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:01,942 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:01,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:01,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-02-15 13:54:01,942 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:01,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1410797417, now seen corresponding path program 290 times [2022-02-15 13:54:01,943 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:01,943 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791155583] [2022-02-15 13:54:01,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:01,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:02,174 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:02,175 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791155583] [2022-02-15 13:54:02,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791155583] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:02,175 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:02,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:02,175 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963624775] [2022-02-15 13:54:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:02,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:02,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:02,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:02,175 INFO L87 Difference]: Start difference. First operand 14996 states and 54248 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:03,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:03,586 INFO L93 Difference]: Finished difference Result 16956 states and 61114 transitions. [2022-02-15 13:54:03,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:54:03,587 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:03,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:03,632 INFO L225 Difference]: With dead ends: 16956 [2022-02-15 13:54:03,632 INFO L226 Difference]: Without dead ends: 16859 [2022-02-15 13:54:03,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:54:03,633 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 530 mSDsluCounter, 2736 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 3180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:03,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1624 Invalid, 3180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:54:03,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16859 states. [2022-02-15 13:54:03,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16859 to 14996. [2022-02-15 13:54:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14996 states, 14995 states have (on average 3.617739246415472) internal successors, (54248), 14995 states have internal predecessors, (54248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14996 states to 14996 states and 54248 transitions. [2022-02-15 13:54:03,940 INFO L78 Accepts]: Start accepts. Automaton has 14996 states and 54248 transitions. Word has length 47 [2022-02-15 13:54:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:03,940 INFO L470 AbstractCegarLoop]: Abstraction has 14996 states and 54248 transitions. [2022-02-15 13:54:03,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:03,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14996 states and 54248 transitions. [2022-02-15 13:54:03,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:03,970 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:03,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:03,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-02-15 13:54:03,970 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -314623093, now seen corresponding path program 291 times [2022-02-15 13:54:03,970 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:03,970 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107935326] [2022-02-15 13:54:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:03,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:04,183 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:04,183 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107935326] [2022-02-15 13:54:04,183 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107935326] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:04,183 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:04,183 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:04,183 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950391698] [2022-02-15 13:54:04,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:04,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:04,183 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:04,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:04,184 INFO L87 Difference]: Start difference. First operand 14996 states and 54248 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:05,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:05,495 INFO L93 Difference]: Finished difference Result 16723 states and 60384 transitions. [2022-02-15 13:54:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-02-15 13:54:05,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:05,537 INFO L225 Difference]: With dead ends: 16723 [2022-02-15 13:54:05,537 INFO L226 Difference]: Without dead ends: 16602 [2022-02-15 13:54:05,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1777, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:54:05,538 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 429 mSDsluCounter, 2456 mSDsCounter, 0 mSdLazyCounter, 2930 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:05,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [429 Valid, 1463 Invalid, 2965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2930 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:54:05,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16602 states. [2022-02-15 13:54:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16602 to 14972. [2022-02-15 13:54:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14972 states, 14971 states have (on average 3.6193975018368847) internal successors, (54186), 14971 states have internal predecessors, (54186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:05,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14972 states to 14972 states and 54186 transitions. [2022-02-15 13:54:05,874 INFO L78 Accepts]: Start accepts. Automaton has 14972 states and 54186 transitions. Word has length 47 [2022-02-15 13:54:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:05,874 INFO L470 AbstractCegarLoop]: Abstraction has 14972 states and 54186 transitions. [2022-02-15 13:54:05,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 14972 states and 54186 transitions. [2022-02-15 13:54:05,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:05,904 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:05,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:05,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-02-15 13:54:05,904 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:05,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash -268407187, now seen corresponding path program 292 times [2022-02-15 13:54:05,904 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:05,904 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466044555] [2022-02-15 13:54:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:05,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:06,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:06,088 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466044555] [2022-02-15 13:54:06,088 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466044555] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:06,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:06,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:54:06,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627132240] [2022-02-15 13:54:06,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:06,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:54:06,089 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:54:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:54:06,089 INFO L87 Difference]: Start difference. First operand 14972 states and 54186 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:07,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:07,317 INFO L93 Difference]: Finished difference Result 16717 states and 60361 transitions. [2022-02-15 13:54:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:54:07,317 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:07,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:07,358 INFO L225 Difference]: With dead ends: 16717 [2022-02-15 13:54:07,358 INFO L226 Difference]: Without dead ends: 16580 [2022-02-15 13:54:07,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:54:07,359 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 445 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 2918 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 2957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 2918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:07,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 1530 Invalid, 2957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 2918 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:54:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16580 states. [2022-02-15 13:54:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16580 to 15028. [2022-02-15 13:54:07,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15028 states, 15027 states have (on average 3.61828708325015) internal successors, (54372), 15027 states have internal predecessors, (54372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:07,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15028 states to 15028 states and 54372 transitions. [2022-02-15 13:54:07,632 INFO L78 Accepts]: Start accepts. Automaton has 15028 states and 54372 transitions. Word has length 47 [2022-02-15 13:54:07,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:07,632 INFO L470 AbstractCegarLoop]: Abstraction has 15028 states and 54372 transitions. [2022-02-15 13:54:07,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:07,632 INFO L276 IsEmpty]: Start isEmpty. Operand 15028 states and 54372 transitions. [2022-02-15 13:54:07,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:07,660 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:07,660 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:07,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-02-15 13:54:07,660 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:07,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:07,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1077347795, now seen corresponding path program 293 times [2022-02-15 13:54:07,660 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:07,660 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274824974] [2022-02-15 13:54:07,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:07,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:07,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:07,877 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:07,877 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274824974] [2022-02-15 13:54:07,877 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274824974] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:07,877 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:07,877 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:07,877 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281930800] [2022-02-15 13:54:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:07,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:07,878 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:07,878 INFO L87 Difference]: Start difference. First operand 15028 states and 54372 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:09,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:09,600 INFO L93 Difference]: Finished difference Result 16701 states and 60305 transitions. [2022-02-15 13:54:09,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:54:09,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:09,641 INFO L225 Difference]: With dead ends: 16701 [2022-02-15 13:54:09,641 INFO L226 Difference]: Without dead ends: 16556 [2022-02-15 13:54:09,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=2394, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:54:09,642 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 501 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 3214 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 3263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 3214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:09,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [501 Valid, 1636 Invalid, 3263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 3214 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:54:09,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16556 states. [2022-02-15 13:54:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16556 to 15092. [2022-02-15 13:54:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 3.6156649658736995) internal successors, (54564), 15091 states have internal predecessors, (54564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 54564 transitions. [2022-02-15 13:54:09,913 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 54564 transitions. Word has length 47 [2022-02-15 13:54:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:09,913 INFO L470 AbstractCegarLoop]: Abstraction has 15092 states and 54564 transitions. [2022-02-15 13:54:09,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 54564 transitions. [2022-02-15 13:54:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:09,939 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:09,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:09,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-02-15 13:54:09,940 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1351003155, now seen corresponding path program 294 times [2022-02-15 13:54:09,940 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:09,940 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719114179] [2022-02-15 13:54:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:09,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:10,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:10,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719114179] [2022-02-15 13:54:10,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719114179] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:10,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:10,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:10,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823773806] [2022-02-15 13:54:10,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:10,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:10,108 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:10,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:10,108 INFO L87 Difference]: Start difference. First operand 15092 states and 54564 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:11,411 INFO L93 Difference]: Finished difference Result 16749 states and 60481 transitions. [2022-02-15 13:54:11,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:54:11,411 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:11,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:11,452 INFO L225 Difference]: With dead ends: 16749 [2022-02-15 13:54:11,453 INFO L226 Difference]: Without dead ends: 16500 [2022-02-15 13:54:11,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=260, Invalid=2392, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:54:11,453 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 489 mSDsluCounter, 2947 mSDsCounter, 0 mSdLazyCounter, 3454 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:11,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [489 Valid, 1777 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3454 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:54:11,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16500 states. [2022-02-15 13:54:11,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16500 to 15028. [2022-02-15 13:54:11,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15028 states, 15027 states have (on average 3.6172223331336926) internal successors, (54356), 15027 states have internal predecessors, (54356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:11,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15028 states to 15028 states and 54356 transitions. [2022-02-15 13:54:11,728 INFO L78 Accepts]: Start accepts. Automaton has 15028 states and 54356 transitions. Word has length 47 [2022-02-15 13:54:11,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:11,728 INFO L470 AbstractCegarLoop]: Abstraction has 15028 states and 54356 transitions. [2022-02-15 13:54:11,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15028 states and 54356 transitions. [2022-02-15 13:54:11,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:11,756 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:11,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:11,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-02-15 13:54:11,756 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 384316107, now seen corresponding path program 295 times [2022-02-15 13:54:11,756 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:11,756 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490847618] [2022-02-15 13:54:11,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:11,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:11,938 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:11,938 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490847618] [2022-02-15 13:54:11,938 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490847618] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:11,938 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:11,938 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:54:11,938 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091597952] [2022-02-15 13:54:11,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:11,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:54:11,938 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:11,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:54:11,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:54:11,939 INFO L87 Difference]: Start difference. First operand 15028 states and 54356 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:13,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:13,145 INFO L93 Difference]: Finished difference Result 16803 states and 60618 transitions. [2022-02-15 13:54:13,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-02-15 13:54:13,145 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:13,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:13,191 INFO L225 Difference]: With dead ends: 16803 [2022-02-15 13:54:13,191 INFO L226 Difference]: Without dead ends: 16666 [2022-02-15 13:54:13,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=2112, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:54:13,192 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 470 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:13,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [470 Valid, 1511 Invalid, 2865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-02-15 13:54:13,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16666 states. [2022-02-15 13:54:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16666 to 15062. [2022-02-15 13:54:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15062 states, 15061 states have (on average 3.6145674258017397) internal successors, (54439), 15061 states have internal predecessors, (54439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:13,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15062 states to 15062 states and 54439 transitions. [2022-02-15 13:54:13,504 INFO L78 Accepts]: Start accepts. Automaton has 15062 states and 54439 transitions. Word has length 47 [2022-02-15 13:54:13,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:13,504 INFO L470 AbstractCegarLoop]: Abstraction has 15062 states and 54439 transitions. [2022-02-15 13:54:13,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:13,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15062 states and 54439 transitions. [2022-02-15 13:54:13,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:13,535 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:13,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:13,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-02-15 13:54:13,535 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:13,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash -424624501, now seen corresponding path program 296 times [2022-02-15 13:54:13,535 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:13,535 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840250830] [2022-02-15 13:54:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:13,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:13,794 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:13,794 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840250830] [2022-02-15 13:54:13,794 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840250830] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:13,794 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:13,794 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:13,794 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170811848] [2022-02-15 13:54:13,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:13,794 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:13,795 INFO L87 Difference]: Start difference. First operand 15062 states and 54439 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:15,525 INFO L93 Difference]: Finished difference Result 16787 states and 60550 transitions. [2022-02-15 13:54:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-02-15 13:54:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:15,569 INFO L225 Difference]: With dead ends: 16787 [2022-02-15 13:54:15,569 INFO L226 Difference]: Without dead ends: 16642 [2022-02-15 13:54:15,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=2395, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:54:15,569 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 523 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 3260 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:15,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1699 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:54:15,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16642 states. [2022-02-15 13:54:15,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16642 to 15062. [2022-02-15 13:54:15,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15062 states, 15061 states have (on average 3.6141690458800877) internal successors, (54433), 15061 states have internal predecessors, (54433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:15,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15062 states to 15062 states and 54433 transitions. [2022-02-15 13:54:15,964 INFO L78 Accepts]: Start accepts. Automaton has 15062 states and 54433 transitions. Word has length 47 [2022-02-15 13:54:15,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:15,964 INFO L470 AbstractCegarLoop]: Abstraction has 15062 states and 54433 transitions. [2022-02-15 13:54:15,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 15062 states and 54433 transitions. [2022-02-15 13:54:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:15,992 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:15,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:15,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-02-15 13:54:15,992 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:15,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash 475271277, now seen corresponding path program 297 times [2022-02-15 13:54:15,993 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:15,993 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324856828] [2022-02-15 13:54:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:15,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:16,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:16,240 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:16,240 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324856828] [2022-02-15 13:54:16,240 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324856828] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:16,240 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:16,240 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:16,240 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367964560] [2022-02-15 13:54:16,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:16,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:16,241 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:16,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:16,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:16,241 INFO L87 Difference]: Start difference. First operand 15062 states and 54433 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:19,837 INFO L93 Difference]: Finished difference Result 21469 states and 77439 transitions. [2022-02-15 13:54:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-02-15 13:54:19,837 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:19,891 INFO L225 Difference]: With dead ends: 21469 [2022-02-15 13:54:19,891 INFO L226 Difference]: Without dead ends: 21332 [2022-02-15 13:54:19,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2935 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=756, Invalid=8174, Unknown=0, NotChecked=0, Total=8930 [2022-02-15 13:54:19,893 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 953 mSDsluCounter, 4373 mSDsCounter, 0 mSdLazyCounter, 5961 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 3117 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 5961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:19,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 3117 Invalid, 6133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 5961 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-02-15 13:54:19,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21332 states. [2022-02-15 13:54:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21332 to 15106. [2022-02-15 13:54:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15106 states, 15105 states have (on average 3.614366103939093) internal successors, (54595), 15105 states have internal predecessors, (54595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15106 states to 15106 states and 54595 transitions. [2022-02-15 13:54:20,457 INFO L78 Accepts]: Start accepts. Automaton has 15106 states and 54595 transitions. Word has length 47 [2022-02-15 13:54:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:20,457 INFO L470 AbstractCegarLoop]: Abstraction has 15106 states and 54595 transitions. [2022-02-15 13:54:20,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15106 states and 54595 transitions. [2022-02-15 13:54:20,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:20,485 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:20,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:20,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-02-15 13:54:20,485 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:20,485 INFO L85 PathProgramCache]: Analyzing trace with hash -375380631, now seen corresponding path program 298 times [2022-02-15 13:54:20,485 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:20,485 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574606244] [2022-02-15 13:54:20,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:20,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:20,697 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:20,697 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574606244] [2022-02-15 13:54:20,697 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574606244] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:20,697 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:20,697 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:20,697 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523196746] [2022-02-15 13:54:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:20,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:20,697 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:20,698 INFO L87 Difference]: Start difference. First operand 15106 states and 54595 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:24,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:24,009 INFO L93 Difference]: Finished difference Result 21974 states and 79575 transitions. [2022-02-15 13:54:24,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-02-15 13:54:24,010 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:24,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:24,071 INFO L225 Difference]: With dead ends: 21974 [2022-02-15 13:54:24,072 INFO L226 Difference]: Without dead ends: 21867 [2022-02-15 13:54:24,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3096 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=740, Invalid=8572, Unknown=0, NotChecked=0, Total=9312 [2022-02-15 13:54:24,073 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 956 mSDsluCounter, 4756 mSDsCounter, 0 mSdLazyCounter, 6365 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 3408 SdHoareTripleChecker+Invalid, 6527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 6365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:24,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 3408 Invalid, 6527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 6365 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:54:24,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21867 states. [2022-02-15 13:54:24,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21867 to 15074. [2022-02-15 13:54:24,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15074 states, 15073 states have (on average 3.6144762157500168) internal successors, (54481), 15073 states have internal predecessors, (54481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:24,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15074 states to 15074 states and 54481 transitions. [2022-02-15 13:54:24,565 INFO L78 Accepts]: Start accepts. Automaton has 15074 states and 54481 transitions. Word has length 47 [2022-02-15 13:54:24,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:24,565 INFO L470 AbstractCegarLoop]: Abstraction has 15074 states and 54481 transitions. [2022-02-15 13:54:24,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:24,565 INFO L276 IsEmpty]: Start isEmpty. Operand 15074 states and 54481 transitions. [2022-02-15 13:54:24,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:24,595 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:24,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:24,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-02-15 13:54:24,595 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1305220815, now seen corresponding path program 299 times [2022-02-15 13:54:24,595 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:24,596 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315099673] [2022-02-15 13:54:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:24,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:24,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:24,807 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:24,807 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315099673] [2022-02-15 13:54:24,807 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315099673] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:24,807 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:24,807 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:24,807 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27339127] [2022-02-15 13:54:24,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:24,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:24,808 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:24,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:24,808 INFO L87 Difference]: Start difference. First operand 15074 states and 54481 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:26,495 INFO L93 Difference]: Finished difference Result 17001 states and 61208 transitions. [2022-02-15 13:54:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:54:26,495 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:26,542 INFO L225 Difference]: With dead ends: 17001 [2022-02-15 13:54:26,542 INFO L226 Difference]: Without dead ends: 16880 [2022-02-15 13:54:26,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=289, Invalid=2791, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:54:26,543 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 564 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 3192 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 3262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:26,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 1627 Invalid, 3262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3192 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:54:26,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16880 states. [2022-02-15 13:54:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16880 to 15074. [2022-02-15 13:54:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15074 states, 15073 states have (on average 3.6144762157500168) internal successors, (54481), 15073 states have internal predecessors, (54481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15074 states to 15074 states and 54481 transitions. [2022-02-15 13:54:26,870 INFO L78 Accepts]: Start accepts. Automaton has 15074 states and 54481 transitions. Word has length 47 [2022-02-15 13:54:26,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:26,870 INFO L470 AbstractCegarLoop]: Abstraction has 15074 states and 54481 transitions. [2022-02-15 13:54:26,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:26,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15074 states and 54481 transitions. [2022-02-15 13:54:26,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:26,900 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:26,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:26,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-02-15 13:54:26,900 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1418325045, now seen corresponding path program 300 times [2022-02-15 13:54:26,900 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:26,901 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643771464] [2022-02-15 13:54:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:26,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:26,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:27,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:27,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643771464] [2022-02-15 13:54:27,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643771464] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:27,117 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:27,117 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:27,117 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598159094] [2022-02-15 13:54:27,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:27,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:27,117 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:27,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:27,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:27,118 INFO L87 Difference]: Start difference. First operand 15074 states and 54481 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:29,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:29,513 INFO L93 Difference]: Finished difference Result 17903 states and 64469 transitions. [2022-02-15 13:54:29,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-02-15 13:54:29,513 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:29,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:29,558 INFO L225 Difference]: With dead ends: 17903 [2022-02-15 13:54:29,558 INFO L226 Difference]: Without dead ends: 17659 [2022-02-15 13:54:29,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1197 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=379, Invalid=4043, Unknown=0, NotChecked=0, Total=4422 [2022-02-15 13:54:29,559 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 639 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 4724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:29,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 2422 Invalid, 4724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 4642 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-02-15 13:54:29,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17659 states. [2022-02-15 13:54:29,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17659 to 15148. [2022-02-15 13:54:29,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15148 states, 15147 states have (on average 3.612464514425299) internal successors, (54718), 15147 states have internal predecessors, (54718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:29,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 54718 transitions. [2022-02-15 13:54:29,855 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 54718 transitions. Word has length 47 [2022-02-15 13:54:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:29,855 INFO L470 AbstractCegarLoop]: Abstraction has 15148 states and 54718 transitions. [2022-02-15 13:54:29,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 54718 transitions. [2022-02-15 13:54:29,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:29,883 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:29,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:29,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-02-15 13:54:29,883 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:29,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:29,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1119433367, now seen corresponding path program 301 times [2022-02-15 13:54:29,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:29,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303652640] [2022-02-15 13:54:29,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:29,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:29,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:30,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:30,088 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:30,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303652640] [2022-02-15 13:54:30,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303652640] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:30,089 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:30,089 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:30,089 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37337765] [2022-02-15 13:54:30,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:30,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:30,095 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:30,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:30,096 INFO L87 Difference]: Start difference. First operand 15148 states and 54718 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:31,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:31,814 INFO L93 Difference]: Finished difference Result 17034 states and 61293 transitions. [2022-02-15 13:54:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:54:31,815 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:31,857 INFO L225 Difference]: With dead ends: 17034 [2022-02-15 13:54:31,858 INFO L226 Difference]: Without dead ends: 16937 [2022-02-15 13:54:31,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=233, Invalid=2217, Unknown=0, NotChecked=0, Total=2450 [2022-02-15 13:54:31,858 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 478 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 3234 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:31,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1705 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-02-15 13:54:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16937 states. [2022-02-15 13:54:32,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16937 to 15148. [2022-02-15 13:54:32,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15148 states, 15147 states have (on average 3.612464514425299) internal successors, (54718), 15147 states have internal predecessors, (54718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:32,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 54718 transitions. [2022-02-15 13:54:32,233 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 54718 transitions. Word has length 47 [2022-02-15 13:54:32,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:32,233 INFO L470 AbstractCegarLoop]: Abstraction has 15148 states and 54718 transitions. [2022-02-15 13:54:32,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 54718 transitions. [2022-02-15 13:54:32,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:32,262 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:32,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:32,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-02-15 13:54:32,263 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:32,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1450113419, now seen corresponding path program 302 times [2022-02-15 13:54:32,263 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:32,263 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049550816] [2022-02-15 13:54:32,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:32,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:32,482 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:32,482 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049550816] [2022-02-15 13:54:32,482 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049550816] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:32,482 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:32,482 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:32,482 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777990451] [2022-02-15 13:54:32,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:32,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:32,482 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:32,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:32,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:32,483 INFO L87 Difference]: Start difference. First operand 15148 states and 54718 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:33,955 INFO L93 Difference]: Finished difference Result 16805 states and 60583 transitions. [2022-02-15 13:54:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-02-15 13:54:33,955 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:33,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:34,001 INFO L225 Difference]: With dead ends: 16805 [2022-02-15 13:54:34,001 INFO L226 Difference]: Without dead ends: 16700 [2022-02-15 13:54:34,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=2040, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:54:34,002 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 437 mSDsluCounter, 2524 mSDsCounter, 0 mSdLazyCounter, 2966 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 3007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:34,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1540 Invalid, 3007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2966 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:54:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2022-02-15 13:54:34,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 15148. [2022-02-15 13:54:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15148 states, 15147 states have (on average 3.612068396382122) internal successors, (54712), 15147 states have internal predecessors, (54712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15148 states to 15148 states and 54712 transitions. [2022-02-15 13:54:34,317 INFO L78 Accepts]: Start accepts. Automaton has 15148 states and 54712 transitions. Word has length 47 [2022-02-15 13:54:34,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:34,317 INFO L470 AbstractCegarLoop]: Abstraction has 15148 states and 54712 transitions. [2022-02-15 13:54:34,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 15148 states and 54712 transitions. [2022-02-15 13:54:34,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:34,348 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:34,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:34,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-02-15 13:54:34,348 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 695517723, now seen corresponding path program 303 times [2022-02-15 13:54:34,349 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:34,349 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073333883] [2022-02-15 13:54:34,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:34,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:34,595 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:34,595 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073333883] [2022-02-15 13:54:34,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073333883] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:34,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:34,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:34,595 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751252813] [2022-02-15 13:54:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:34,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:34,596 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:34,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:34,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:34,596 INFO L87 Difference]: Start difference. First operand 15148 states and 54712 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:36,388 INFO L93 Difference]: Finished difference Result 17132 states and 61708 transitions. [2022-02-15 13:54:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-02-15 13:54:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:36,429 INFO L225 Difference]: With dead ends: 17132 [2022-02-15 13:54:36,429 INFO L226 Difference]: Without dead ends: 16947 [2022-02-15 13:54:36,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=2785, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:54:36,430 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 571 mSDsluCounter, 2851 mSDsCounter, 0 mSdLazyCounter, 3316 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 3316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:36,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 1714 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 3316 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:54:36,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16947 states. [2022-02-15 13:54:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16947 to 15152. [2022-02-15 13:54:36,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15152 states, 15151 states have (on average 3.6117748003432117) internal successors, (54722), 15151 states have internal predecessors, (54722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15152 states to 15152 states and 54722 transitions. [2022-02-15 13:54:36,715 INFO L78 Accepts]: Start accepts. Automaton has 15152 states and 54722 transitions. Word has length 47 [2022-02-15 13:54:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:36,716 INFO L470 AbstractCegarLoop]: Abstraction has 15152 states and 54722 transitions. [2022-02-15 13:54:36,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:36,716 INFO L276 IsEmpty]: Start isEmpty. Operand 15152 states and 54722 transitions. [2022-02-15 13:54:36,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:36,744 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:36,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:36,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-02-15 13:54:36,744 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:36,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:36,744 INFO L85 PathProgramCache]: Analyzing trace with hash 578025981, now seen corresponding path program 304 times [2022-02-15 13:54:36,744 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:36,744 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137539886] [2022-02-15 13:54:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:36,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:36,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:36,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137539886] [2022-02-15 13:54:36,906 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137539886] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:36,906 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:36,906 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:36,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321807711] [2022-02-15 13:54:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:36,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:36,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:36,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:36,907 INFO L87 Difference]: Start difference. First operand 15152 states and 54722 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:38,499 INFO L93 Difference]: Finished difference Result 17224 states and 61911 transitions. [2022-02-15 13:54:38,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-02-15 13:54:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:38,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:38,541 INFO L225 Difference]: With dead ends: 17224 [2022-02-15 13:54:38,541 INFO L226 Difference]: Without dead ends: 17087 [2022-02-15 13:54:38,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=296, Invalid=2784, Unknown=0, NotChecked=0, Total=3080 [2022-02-15 13:54:38,542 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 578 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 3268 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:38,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1662 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3268 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:54:38,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17087 states. [2022-02-15 13:54:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17087 to 15152. [2022-02-15 13:54:38,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15152 states, 15151 states have (on average 3.6117748003432117) internal successors, (54722), 15151 states have internal predecessors, (54722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:38,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15152 states to 15152 states and 54722 transitions. [2022-02-15 13:54:38,882 INFO L78 Accepts]: Start accepts. Automaton has 15152 states and 54722 transitions. Word has length 47 [2022-02-15 13:54:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:38,882 INFO L470 AbstractCegarLoop]: Abstraction has 15152 states and 54722 transitions. [2022-02-15 13:54:38,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:38,882 INFO L276 IsEmpty]: Start isEmpty. Operand 15152 states and 54722 transitions. [2022-02-15 13:54:38,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:38,910 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:38,910 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:38,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-02-15 13:54:38,910 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2145519879, now seen corresponding path program 305 times [2022-02-15 13:54:38,911 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:38,911 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131791510] [2022-02-15 13:54:38,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:38,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:38,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:39,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:39,126 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:39,126 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131791510] [2022-02-15 13:54:39,127 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131791510] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:39,127 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:39,127 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:39,127 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530190541] [2022-02-15 13:54:39,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:39,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:39,127 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:39,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:39,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:39,128 INFO L87 Difference]: Start difference. First operand 15152 states and 54722 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:41,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:41,980 INFO L93 Difference]: Finished difference Result 19500 states and 70079 transitions. [2022-02-15 13:54:41,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-02-15 13:54:41,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:41,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:42,029 INFO L225 Difference]: With dead ends: 19500 [2022-02-15 13:54:42,029 INFO L226 Difference]: Without dead ends: 19260 [2022-02-15 13:54:42,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1564 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=449, Invalid=4953, Unknown=0, NotChecked=0, Total=5402 [2022-02-15 13:54:42,030 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 781 mSDsluCounter, 4190 mSDsCounter, 0 mSdLazyCounter, 5045 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 5151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 5045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:42,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [781 Valid, 2812 Invalid, 5151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 5045 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-02-15 13:54:42,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19260 states. [2022-02-15 13:54:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19260 to 15120. [2022-02-15 13:54:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15120 states, 15119 states have (on average 3.613863350750711) internal successors, (54638), 15119 states have internal predecessors, (54638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:42,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 54638 transitions. [2022-02-15 13:54:42,454 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 54638 transitions. Word has length 47 [2022-02-15 13:54:42,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:42,454 INFO L470 AbstractCegarLoop]: Abstraction has 15120 states and 54638 transitions. [2022-02-15 13:54:42,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 54638 transitions. [2022-02-15 13:54:42,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:42,482 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:42,482 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:42,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-02-15 13:54:42,482 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1846628201, now seen corresponding path program 306 times [2022-02-15 13:54:42,483 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:42,483 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295067707] [2022-02-15 13:54:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:42,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:42,732 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:42,732 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295067707] [2022-02-15 13:54:42,732 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295067707] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:42,732 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:42,732 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:42,732 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853508397] [2022-02-15 13:54:42,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:42,733 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:42,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:42,733 INFO L87 Difference]: Start difference. First operand 15120 states and 54638 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:44,551 INFO L93 Difference]: Finished difference Result 17161 states and 61720 transitions. [2022-02-15 13:54:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-02-15 13:54:44,551 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:44,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:44,595 INFO L225 Difference]: With dead ends: 17161 [2022-02-15 13:54:44,595 INFO L226 Difference]: Without dead ends: 17064 [2022-02-15 13:54:44,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=256, Invalid=2396, Unknown=0, NotChecked=0, Total=2652 [2022-02-15 13:54:44,596 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 544 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 3224 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 3268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:44,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 1666 Invalid, 3268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3224 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-02-15 13:54:44,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17064 states. [2022-02-15 13:54:44,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17064 to 15120. [2022-02-15 13:54:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15120 states, 15119 states have (on average 3.613863350750711) internal successors, (54638), 15119 states have internal predecessors, (54638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 54638 transitions. [2022-02-15 13:54:44,881 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 54638 transitions. Word has length 47 [2022-02-15 13:54:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:44,881 INFO L470 AbstractCegarLoop]: Abstraction has 15120 states and 54638 transitions. [2022-02-15 13:54:44,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:44,882 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 54638 transitions. [2022-02-15 13:54:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:44,909 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:44,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:44,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-02-15 13:54:44,909 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:44,909 INFO L85 PathProgramCache]: Analyzing trace with hash 722918585, now seen corresponding path program 307 times [2022-02-15 13:54:44,909 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:44,909 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797232754] [2022-02-15 13:54:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:44,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:45,131 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:45,131 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797232754] [2022-02-15 13:54:45,131 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797232754] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:45,132 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:45,132 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:45,132 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302613303] [2022-02-15 13:54:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:45,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:45,132 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:45,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:45,132 INFO L87 Difference]: Start difference. First operand 15120 states and 54638 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:46,643 INFO L93 Difference]: Finished difference Result 16930 states and 61003 transitions. [2022-02-15 13:54:46,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:54:46,643 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:46,690 INFO L225 Difference]: With dead ends: 16930 [2022-02-15 13:54:46,690 INFO L226 Difference]: Without dead ends: 16831 [2022-02-15 13:54:46,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=1947, Unknown=0, NotChecked=0, Total=2162 [2022-02-15 13:54:46,691 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 452 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 3164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:46,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1564 Invalid, 3164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:54:46,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16831 states. [2022-02-15 13:54:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16831 to 15120. [2022-02-15 13:54:46,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15120 states, 15119 states have (on average 3.613731066869502) internal successors, (54636), 15119 states have internal predecessors, (54636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:47,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15120 states to 15120 states and 54636 transitions. [2022-02-15 13:54:47,015 INFO L78 Accepts]: Start accepts. Automaton has 15120 states and 54636 transitions. Word has length 47 [2022-02-15 13:54:47,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:47,016 INFO L470 AbstractCegarLoop]: Abstraction has 15120 states and 54636 transitions. [2022-02-15 13:54:47,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:47,016 INFO L276 IsEmpty]: Start isEmpty. Operand 15120 states and 54636 transitions. [2022-02-15 13:54:47,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:47,045 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:47,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:47,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-02-15 13:54:47,045 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:47,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1798663149, now seen corresponding path program 308 times [2022-02-15 13:54:47,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:47,045 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431346969] [2022-02-15 13:54:47,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:47,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:47,252 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:47,252 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431346969] [2022-02-15 13:54:47,252 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431346969] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:47,252 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:47,253 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-02-15 13:54:47,253 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240940793] [2022-02-15 13:54:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:47,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-02-15 13:54:47,253 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-02-15 13:54:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2022-02-15 13:54:47,253 INFO L87 Difference]: Start difference. First operand 15120 states and 54636 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:48,667 INFO L93 Difference]: Finished difference Result 16967 states and 61158 transitions. [2022-02-15 13:54:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-02-15 13:54:48,667 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:48,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:48,713 INFO L225 Difference]: With dead ends: 16967 [2022-02-15 13:54:48,713 INFO L226 Difference]: Without dead ends: 16822 [2022-02-15 13:54:48,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=232, Invalid=2024, Unknown=0, NotChecked=0, Total=2256 [2022-02-15 13:54:48,713 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 459 mSDsluCounter, 2424 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 2932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:48,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [459 Valid, 1500 Invalid, 2932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:54:48,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16822 states. [2022-02-15 13:54:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16822 to 15132. [2022-02-15 13:54:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15132 states, 15131 states have (on average 3.6128477959156697) internal successors, (54666), 15131 states have internal predecessors, (54666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15132 states to 15132 states and 54666 transitions. [2022-02-15 13:54:49,087 INFO L78 Accepts]: Start accepts. Automaton has 15132 states and 54666 transitions. Word has length 47 [2022-02-15 13:54:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:49,087 INFO L470 AbstractCegarLoop]: Abstraction has 15132 states and 54666 transitions. [2022-02-15 13:54:49,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:49,087 INFO L276 IsEmpty]: Start isEmpty. Operand 15132 states and 54666 transitions. [2022-02-15 13:54:49,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:49,118 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:49,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:49,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-02-15 13:54:49,118 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:49,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash -144789557, now seen corresponding path program 309 times [2022-02-15 13:54:49,119 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:49,119 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291554820] [2022-02-15 13:54:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:49,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:49,333 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:49,333 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291554820] [2022-02-15 13:54:49,333 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291554820] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:49,333 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:49,333 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:49,333 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099237899] [2022-02-15 13:54:49,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:49,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:49,334 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:49,334 INFO L87 Difference]: Start difference. First operand 15132 states and 54666 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:50,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:50,624 INFO L93 Difference]: Finished difference Result 16988 states and 61162 transitions. [2022-02-15 13:54:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-02-15 13:54:50,624 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:50,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:50,666 INFO L225 Difference]: With dead ends: 16988 [2022-02-15 13:54:50,666 INFO L226 Difference]: Without dead ends: 16891 [2022-02-15 13:54:50,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=227, Invalid=2125, Unknown=0, NotChecked=0, Total=2352 [2022-02-15 13:54:50,667 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 487 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 3148 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 3148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:50,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 1658 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 3148 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-02-15 13:54:50,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16891 states. [2022-02-15 13:54:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16891 to 15132. [2022-02-15 13:54:50,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15132 states, 15131 states have (on average 3.6128477959156697) internal successors, (54666), 15131 states have internal predecessors, (54666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:50,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15132 states to 15132 states and 54666 transitions. [2022-02-15 13:54:50,952 INFO L78 Accepts]: Start accepts. Automaton has 15132 states and 54666 transitions. Word has length 47 [2022-02-15 13:54:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:50,953 INFO L470 AbstractCegarLoop]: Abstraction has 15132 states and 54666 transitions. [2022-02-15 13:54:50,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 15132 states and 54666 transitions. [2022-02-15 13:54:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:50,981 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:50,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:50,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-02-15 13:54:50,981 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:50,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:50,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1870210067, now seen corresponding path program 310 times [2022-02-15 13:54:50,981 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:50,981 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491573045] [2022-02-15 13:54:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:50,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:51,153 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:51,153 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491573045] [2022-02-15 13:54:51,153 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491573045] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:51,153 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:51,153 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:51,154 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332530432] [2022-02-15 13:54:51,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:51,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:51,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:51,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:51,154 INFO L87 Difference]: Start difference. First operand 15132 states and 54666 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:52,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:52,557 INFO L93 Difference]: Finished difference Result 16757 states and 60445 transitions. [2022-02-15 13:54:52,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-02-15 13:54:52,558 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:52,609 INFO L225 Difference]: With dead ends: 16757 [2022-02-15 13:54:52,610 INFO L226 Difference]: Without dead ends: 16596 [2022-02-15 13:54:52,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=1782, Unknown=0, NotChecked=0, Total=1980 [2022-02-15 13:54:52,610 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 405 mSDsluCounter, 2374 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:52,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 1444 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-02-15 13:54:52,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16596 states. [2022-02-15 13:54:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16596 to 15068. [2022-02-15 13:54:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15068 states, 15067 states have (on average 3.6166456494325345) internal successors, (54492), 15067 states have internal predecessors, (54492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15068 states to 15068 states and 54492 transitions. [2022-02-15 13:54:52,938 INFO L78 Accepts]: Start accepts. Automaton has 15068 states and 54492 transitions. Word has length 47 [2022-02-15 13:54:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:52,938 INFO L470 AbstractCegarLoop]: Abstraction has 15068 states and 54492 transitions. [2022-02-15 13:54:52,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 15068 states and 54492 transitions. [2022-02-15 13:54:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:52,968 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:52,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:52,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-02-15 13:54:52,968 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:52,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:52,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1791433735, now seen corresponding path program 311 times [2022-02-15 13:54:52,969 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:52,969 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798451914] [2022-02-15 13:54:52,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:52,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:53,229 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:53,229 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798451914] [2022-02-15 13:54:53,229 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798451914] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:53,229 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:53,229 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:53,229 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407989227] [2022-02-15 13:54:53,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:53,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:53,229 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:53,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:53,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:53,230 INFO L87 Difference]: Start difference. First operand 15068 states and 54492 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:55,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:55,630 INFO L93 Difference]: Finished difference Result 18857 states and 68076 transitions. [2022-02-15 13:54:55,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-02-15 13:54:55,630 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:55,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:55,676 INFO L225 Difference]: With dead ends: 18857 [2022-02-15 13:54:55,676 INFO L226 Difference]: Without dead ends: 18730 [2022-02-15 13:54:55,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1279 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=420, Invalid=4272, Unknown=0, NotChecked=0, Total=4692 [2022-02-15 13:54:55,677 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 722 mSDsluCounter, 3945 mSDsCounter, 0 mSdLazyCounter, 4775 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 4892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 4775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:55,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 2484 Invalid, 4892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 4775 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-02-15 13:54:55,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2022-02-15 13:54:55,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 15092. [2022-02-15 13:54:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 3.6153999072294747) internal successors, (54560), 15091 states have internal predecessors, (54560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:56,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 54560 transitions. [2022-02-15 13:54:56,047 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 54560 transitions. Word has length 47 [2022-02-15 13:54:56,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:56,047 INFO L470 AbstractCegarLoop]: Abstraction has 15092 states and 54560 transitions. [2022-02-15 13:54:56,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:56,048 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 54560 transitions. [2022-02-15 13:54:56,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:56,076 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:56,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:56,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-02-15 13:54:56,076 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:56,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1132336155, now seen corresponding path program 312 times [2022-02-15 13:54:56,077 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:56,077 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359064887] [2022-02-15 13:54:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:56,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:56,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:56,293 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:56,293 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359064887] [2022-02-15 13:54:56,293 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359064887] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:56,293 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:56,293 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:56,294 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364400920] [2022-02-15 13:54:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:56,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:56,294 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:56,294 INFO L87 Difference]: Start difference. First operand 15092 states and 54560 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:54:58,418 INFO L93 Difference]: Finished difference Result 18578 states and 67068 transitions. [2022-02-15 13:54:58,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-02-15 13:54:58,419 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:54:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:54:58,464 INFO L225 Difference]: With dead ends: 18578 [2022-02-15 13:54:58,465 INFO L226 Difference]: Without dead ends: 18478 [2022-02-15 13:54:58,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=374, Invalid=3532, Unknown=0, NotChecked=0, Total=3906 [2022-02-15 13:54:58,465 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 737 mSDsluCounter, 3521 mSDsCounter, 0 mSdLazyCounter, 4089 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 4089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:54:58,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [737 Valid, 2248 Invalid, 4190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 4089 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:54:58,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18478 states. [2022-02-15 13:54:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18478 to 15092. [2022-02-15 13:54:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 3.6153999072294747) internal successors, (54560), 15091 states have internal predecessors, (54560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 54560 transitions. [2022-02-15 13:54:58,854 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 54560 transitions. Word has length 47 [2022-02-15 13:54:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:54:58,854 INFO L470 AbstractCegarLoop]: Abstraction has 15092 states and 54560 transitions. [2022-02-15 13:54:58,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:54:58,854 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 54560 transitions. [2022-02-15 13:54:58,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:54:58,882 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:54:58,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:54:58,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-02-15 13:54:58,882 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:54:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:54:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -302731335, now seen corresponding path program 313 times [2022-02-15 13:54:58,883 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:54:58,883 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593973764] [2022-02-15 13:54:58,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:54:58,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:54:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:54:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:54:59,106 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:54:59,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593973764] [2022-02-15 13:54:59,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593973764] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:54:59,107 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:54:59,107 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:54:59,107 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736356365] [2022-02-15 13:54:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:54:59,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:54:59,107 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:54:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:54:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:54:59,107 INFO L87 Difference]: Start difference. First operand 15092 states and 54560 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:55:01,447 INFO L93 Difference]: Finished difference Result 19319 states and 69863 transitions. [2022-02-15 13:55:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 13:55:01,447 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:55:01,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:55:01,498 INFO L225 Difference]: With dead ends: 19319 [2022-02-15 13:55:01,498 INFO L226 Difference]: Without dead ends: 19201 [2022-02-15 13:55:01,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=438, Invalid=4392, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 13:55:01,499 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 746 mSDsluCounter, 4006 mSDsCounter, 0 mSdLazyCounter, 4733 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 2585 SdHoareTripleChecker+Invalid, 4845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 4733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-02-15 13:55:01,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [746 Valid, 2585 Invalid, 4845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 4733 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-02-15 13:55:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19201 states. [2022-02-15 13:55:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19201 to 15092. [2022-02-15 13:55:01,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 3.6151348485852495) internal successors, (54556), 15091 states have internal predecessors, (54556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 54556 transitions. [2022-02-15 13:55:01,990 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 54556 transitions. Word has length 47 [2022-02-15 13:55:01,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:55:01,990 INFO L470 AbstractCegarLoop]: Abstraction has 15092 states and 54556 transitions. [2022-02-15 13:55:01,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 54556 transitions. [2022-02-15 13:55:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:55:02,020 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:55:02,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:55:02,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-02-15 13:55:02,021 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:55:02,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:55:02,021 INFO L85 PathProgramCache]: Analyzing trace with hash 255135007, now seen corresponding path program 314 times [2022-02-15 13:55:02,021 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:55:02,021 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451644272] [2022-02-15 13:55:02,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:55:02,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:55:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:55:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:55:02,274 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:55:02,274 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451644272] [2022-02-15 13:55:02,274 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451644272] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:55:02,274 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:55:02,274 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:55:02,274 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684270996] [2022-02-15 13:55:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:55:02,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:55:02,275 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:55:02,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:55:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:55:02,275 INFO L87 Difference]: Start difference. First operand 15092 states and 54556 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:04,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 13:55:04,604 INFO L93 Difference]: Finished difference Result 19714 states and 71152 transitions. [2022-02-15 13:55:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-02-15 13:55:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-02-15 13:55:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 13:55:04,661 INFO L225 Difference]: With dead ends: 19714 [2022-02-15 13:55:04,661 INFO L226 Difference]: Without dead ends: 19609 [2022-02-15 13:55:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=447, Invalid=4383, Unknown=0, NotChecked=0, Total=4830 [2022-02-15 13:55:04,662 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 770 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 4439 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 4561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:55:04,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2540 Invalid, 4561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4439 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:55:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19609 states. [2022-02-15 13:55:04,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19609 to 15092. [2022-02-15 13:55:04,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15092 states, 15091 states have (on average 3.6151348485852495) internal successors, (54556), 15091 states have internal predecessors, (54556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15092 states to 15092 states and 54556 transitions. [2022-02-15 13:55:05,194 INFO L78 Accepts]: Start accepts. Automaton has 15092 states and 54556 transitions. Word has length 47 [2022-02-15 13:55:05,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 13:55:05,194 INFO L470 AbstractCegarLoop]: Abstraction has 15092 states and 54556 transitions. [2022-02-15 13:55:05,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-15 13:55:05,194 INFO L276 IsEmpty]: Start isEmpty. Operand 15092 states and 54556 transitions. [2022-02-15 13:55:05,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-02-15 13:55:05,225 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 13:55:05,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 13:55:05,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-02-15 13:55:05,226 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2022-02-15 13:55:05,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 13:55:05,226 INFO L85 PathProgramCache]: Analyzing trace with hash -266797793, now seen corresponding path program 315 times [2022-02-15 13:55:05,226 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-15 13:55:05,226 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815180016] [2022-02-15 13:55:05,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 13:55:05,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 13:55:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 13:55:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 13:55:05,455 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-15 13:55:05,455 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815180016] [2022-02-15 13:55:05,455 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815180016] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 13:55:05,455 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 13:55:05,455 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-02-15 13:55:05,455 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733186861] [2022-02-15 13:55:05,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 13:55:05,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-02-15 13:55:05,456 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-15 13:55:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-02-15 13:55:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2022-02-15 13:55:05,456 INFO L87 Difference]: Start difference. First operand 15092 states and 54556 transitions. Second operand has 18 states, 18 states have (on average 2.611111111111111) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-02-15 13:55:07,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-02-15 13:55:07,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=421, Invalid=3611, Unknown=0, NotChecked=0, Total=4032 [2022-02-15 13:55:07,755 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 543 mSDsluCounter, 2721 mSDsCounter, 0 mSdLazyCounter, 3576 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 3576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-02-15 13:55:07,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1974 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 3576 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-02-15 13:55:07,756 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 11 remaining) [2022-02-15 13:55:07,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-02-15 13:55:07,756 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. [2022-02-15 13:55:07,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0INUSE_VIOLATION (9 of 11 remaining) [2022-02-15 13:55:07,757 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1INUSE_VIOLATION (8 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (7 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8INUSE_VIOLATION (6 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err7INUSE_VIOLATION (5 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err9INUSE_VIOLATION (4 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err3INUSE_VIOLATION (3 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err4INUSE_VIOLATION (2 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err5INUSE_VIOLATION (1 of 11 remaining) [2022-02-15 13:55:07,758 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err6INUSE_VIOLATION (0 of 11 remaining) [2022-02-15 13:55:07,760 INFO L732 BasicCegarLoop]: Path program histogram: [315] [2022-02-15 13:55:07,761 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-15 13:55:07,761 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 13:55:07,764 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:55:07 BasicIcfg [2022-02-15 13:55:07,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 13:55:07,764 INFO L158 Benchmark]: Toolchain (without parser) took 846794.85ms. Allocated memory was 189.8MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 154.6MB in the beginning and 723.3MB in the end (delta: -568.8MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-15 13:55:07,764 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 189.8MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 13:55:07,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.95ms. Allocated memory is still 189.8MB. Free memory was 154.4MB in the beginning and 152.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-15 13:55:07,764 INFO L158 Benchmark]: Boogie Preprocessor took 10.01ms. Allocated memory is still 189.8MB. Free memory was 152.9MB in the beginning and 152.0MB in the end (delta: 891.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 13:55:07,764 INFO L158 Benchmark]: RCFGBuilder took 252.94ms. Allocated memory is still 189.8MB. Free memory was 151.8MB in the beginning and 142.2MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-15 13:55:07,764 INFO L158 Benchmark]: TraceAbstraction took 846495.21ms. Allocated memory was 189.8MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 141.8MB in the beginning and 723.3MB in the end (delta: -581.5MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. [2022-02-15 13:55:07,765 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 0.13ms. Allocated memory is still 189.8MB. Free memory is still 155.6MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 32.95ms. Allocated memory is still 189.8MB. Free memory was 154.4MB in the beginning and 152.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 10.01ms. Allocated memory is still 189.8MB. Free memory was 152.9MB in the beginning and 152.0MB in the end (delta: 891.4kB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 252.94ms. Allocated memory is still 189.8MB. Free memory was 151.8MB in the beginning and 142.2MB in the end (delta: 9.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 846495.21ms. Allocated memory was 189.8MB in the beginning and 2.1GB in the end (delta: 1.9GB). Free memory was 141.8MB in the beginning and 723.3MB in the end (delta: -581.5MB). Peak memory consumption was 1.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (15092states) and FLOYD_HOARE automaton (currently 59 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 64 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 112 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 846.4s, OverallIterations: 315, TraceHistogramMax: 1, PathProgramHistogramMax: 315, EmptinessCheckTime: 5.0s, AutomataDifference: 709.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 206362 SdHoareTripleChecker+Valid, 385.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206362 mSDsluCounter, 727483 SdHoareTripleChecker+Invalid, 325.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1127293 mSDsCounter, 31699 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1338558 IncrementalHoareTripleChecker+Invalid, 1370257 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31699 mSolverCounterUnsat, 66488 mSDtfsCounter, 1338558 mSolverCounterSat, 2.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22367 GetRequests, 350 SyntacticMatches, 693 SemanticMatches, 21323 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615955 ImplicationChecksByTransitivity, 318.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15152occurred in iteration=303, InterpolantAutomatonStates: 19891, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 61.6s AutomataMinimizationTime, 314 MinimizatonAttempts, 1061945 StatesRemovedByMinimization, 312 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 68.3s InterpolantComputationTime, 14805 NumberOfCodeBlocks, 14805 NumberOfCodeBlocksAsserted, 315 NumberOfCheckSat, 14490 ConstructedInterpolants, 0 QuantifiedInterpolants, 186811 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 315 InterpolantComputations, 315 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown