/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 0.2.1-87fd7473a0bda1db0ad7f77f2116346063730f21-87fd747 [2021-08-21 12:29:29,437 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-21 12:29:29,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-21 12:29:29,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-21 12:29:29,514 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 [2021-08-21 12:29:29,535 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-21 12:29:29,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-21 12:29:29,535 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-21 12:29:29,535 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-21 12:29:29,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-21 12:29:29,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-21 12:29:29,538 INFO L138 SettingsManager]: * Use SBE=true [2021-08-21 12:29:29,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-21 12:29:29,538 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-21 12:29:29,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-21 12:29:29,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-21 12:29:29,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 12:29:29,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-21 12:29:29,540 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-21 12:29:29,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-21 12:29:29,541 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-21 12:29:29,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-21 12:29:29,541 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-21 12:29:29,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-21 12:29:29,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-21 12:29:29,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-21 12:29:29,818 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-21 12:29:29,824 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-21 12:29:29,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl [2021-08-21 12:29:29,825 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/barrier.wvr.bpl' [2021-08-21 12:29:29,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-21 12:29:29,973 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-21 12:29:29,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-21 12:29:29,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-21 12:29:29,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-21 12:29:29,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:29,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:29,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-21 12:29:29,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-21 12:29:29,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-21 12:29:29,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-21 12:29:30,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,005 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-21 12:29:30,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-21 12:29:30,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-21 12:29:30,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-21 12:29:30,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/1) ... [2021-08-21 12:29:30,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-21 12:29:30,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-21 12:29:30,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-21 12:29:30,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-21 12:29:30,119 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-21 12:29:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-21 12:29:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-21 12:29:30,120 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-21 12:29:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-21 12:29:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-21 12:29:30,120 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-21 12:29:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-21 12:29:30,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-21 12:29:30,120 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-21 12:29:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-21 12:29:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-21 12:29:30,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-21 12:29:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-21 12:29:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-21 12:29:30,122 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-08-21 12:29:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-08-21 12:29:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-08-21 12:29:30,123 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration [2021-08-21 12:29:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-08-21 12:29:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-08-21 12:29:30,125 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-21 12:29:30,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-21 12:29:30,346 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-21 12:29:30,347 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 12:29:30 BoogieIcfgContainer [2021-08-21 12:29:30,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-21 12:29:30,349 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-21 12:29:30,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-21 12:29:30,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-21 12:29:30,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 21.08 12:29:29" (1/2) ... [2021-08-21 12:29:30,373 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a665e6 and model type barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 12:29:30, skipping insertion in model container [2021-08-21 12:29:30,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 12:29:30" (2/2) ... [2021-08-21 12:29:30,375 INFO L111 eAbstractionObserver]: Analyzing ICFG barrier.wvr.bpl [2021-08-21 12:29:30,378 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-21 12:29:30,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-21 12:29:30,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-21 12:29:30,379 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-21 12:29:30,534 INFO L148 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2021-08-21 12:29:30,572 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-21 12:29:30,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-21 12:29:30,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-08-21 12:29:30,604 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 65 transitions, 202 flow [2021-08-21 12:29:30,908 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) [2021-08-21 12:29:30,937 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) [2021-08-21 12:29:30,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:30,984 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:30,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:30,985 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:30,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1582648075, now seen corresponding path program 1 times [2021-08-21 12:29:30,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:30,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026272782] [2021-08-21 12:29:30,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:30,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:31,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:31,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:31,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026272782] [2021-08-21 12:29:31,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026272782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:31,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 12:29:31,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430399132] [2021-08-21 12:29:31,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 12:29:31,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 12:29:31,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 12:29:31,221 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) [2021-08-21 12:29:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:31,317 INFO L93 Difference]: Finished difference Result 5614 states and 20074 transitions. [2021-08-21 12:29:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 12:29:31,319 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 [2021-08-21 12:29:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:31,374 INFO L225 Difference]: With dead ends: 5614 [2021-08-21 12:29:31,375 INFO L226 Difference]: Without dead ends: 5614 [2021-08-21 12:29:31,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 12:29:31,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2021-08-21 12:29:31,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5614. [2021-08-21 12:29:31,620 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) [2021-08-21 12:29:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5614 states to 5614 states and 20074 transitions. [2021-08-21 12:29:31,643 INFO L78 Accepts]: Start accepts. Automaton has 5614 states and 20074 transitions. Word has length 47 [2021-08-21 12:29:31,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:31,643 INFO L470 AbstractCegarLoop]: Abstraction has 5614 states and 20074 transitions. [2021-08-21 12:29:31,644 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) [2021-08-21 12:29:31,644 INFO L276 IsEmpty]: Start isEmpty. Operand 5614 states and 20074 transitions. [2021-08-21 12:29:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:31,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:31,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:31,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-21 12:29:31,658 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2098813663, now seen corresponding path program 2 times [2021-08-21 12:29:31,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:31,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717245857] [2021-08-21 12:29:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:31,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:31,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:31,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717245857] [2021-08-21 12:29:31,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717245857] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:31,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:31,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-21 12:29:31,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668274580] [2021-08-21 12:29:31,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-21 12:29:31,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:31,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-21 12:29:31,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 12:29:31,722 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) [2021-08-21 12:29:31,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:31,819 INFO L93 Difference]: Finished difference Result 4822 states and 17110 transitions. [2021-08-21 12:29:31,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-21 12:29:31,820 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 [2021-08-21 12:29:31,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:31,841 INFO L225 Difference]: With dead ends: 4822 [2021-08-21 12:29:31,841 INFO L226 Difference]: Without dead ends: 4822 [2021-08-21 12:29:31,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-21 12:29:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4822 states. [2021-08-21 12:29:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4822 to 4822. [2021-08-21 12:29:31,933 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) [2021-08-21 12:29:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4822 states to 4822 states and 17110 transitions. [2021-08-21 12:29:31,952 INFO L78 Accepts]: Start accepts. Automaton has 4822 states and 17110 transitions. Word has length 47 [2021-08-21 12:29:31,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:31,953 INFO L470 AbstractCegarLoop]: Abstraction has 4822 states and 17110 transitions. [2021-08-21 12:29:31,953 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) [2021-08-21 12:29:31,953 INFO L276 IsEmpty]: Start isEmpty. Operand 4822 states and 17110 transitions. [2021-08-21 12:29:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:31,965 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:31,966 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:31,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-21 12:29:31,966 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:31,967 INFO L82 PathProgramCache]: Analyzing trace with hash 949523355, now seen corresponding path program 3 times [2021-08-21 12:29:31,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:31,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707672772] [2021-08-21 12:29:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:31,967 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:32,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:32,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707672772] [2021-08-21 12:29:32,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707672772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:32,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:32,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:32,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683176428] [2021-08-21 12:29:32,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:32,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:32,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:32,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:32,679 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) [2021-08-21 12:29:33,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:33,820 INFO L93 Difference]: Finished difference Result 6172 states and 21633 transitions. [2021-08-21 12:29:33,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:29:33,821 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 [2021-08-21 12:29:33,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:33,848 INFO L225 Difference]: With dead ends: 6172 [2021-08-21 12:29:33,848 INFO L226 Difference]: Without dead ends: 6045 [2021-08-21 12:29:33,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 703.1ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:29:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6045 states. [2021-08-21 12:29:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6045 to 5006. [2021-08-21 12:29:33,976 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) [2021-08-21 12:29:33,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 17710 transitions. [2021-08-21 12:29:33,992 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 17710 transitions. Word has length 47 [2021-08-21 12:29:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:33,992 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 17710 transitions. [2021-08-21 12:29:33,992 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) [2021-08-21 12:29:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 17710 transitions. [2021-08-21 12:29:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:34,004 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:34,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:34,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-21 12:29:34,005 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:34,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:34,005 INFO L82 PathProgramCache]: Analyzing trace with hash -401225249, now seen corresponding path program 4 times [2021-08-21 12:29:34,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:34,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733823725] [2021-08-21 12:29:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:34,006 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:34,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:34,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733823725] [2021-08-21 12:29:34,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733823725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:34,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:34,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:34,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856444265] [2021-08-21 12:29:34,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:34,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:34,359 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) [2021-08-21 12:29:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:36,491 INFO L93 Difference]: Finished difference Result 8462 states and 29832 transitions. [2021-08-21 12:29:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 12:29:36,491 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 [2021-08-21 12:29:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:36,517 INFO L225 Difference]: With dead ends: 8462 [2021-08-21 12:29:36,517 INFO L226 Difference]: Without dead ends: 8373 [2021-08-21 12:29:36,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 1115.7ms TimeCoverageRelationStatistics Valid=246, Invalid=1916, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:29:36,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8373 states. [2021-08-21 12:29:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8373 to 5198. [2021-08-21 12:29:36,635 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) [2021-08-21 12:29:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 18342 transitions. [2021-08-21 12:29:36,654 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 18342 transitions. Word has length 47 [2021-08-21 12:29:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:36,654 INFO L470 AbstractCegarLoop]: Abstraction has 5198 states and 18342 transitions. [2021-08-21 12:29:36,654 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) [2021-08-21 12:29:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 18342 transitions. [2021-08-21 12:29:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:36,671 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:36,671 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:36,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-21 12:29:36,672 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:36,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1251877157, now seen corresponding path program 5 times [2021-08-21 12:29:36,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:36,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200988814] [2021-08-21 12:29:36,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:36,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:37,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:37,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200988814] [2021-08-21 12:29:37,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200988814] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:37,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:37,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:37,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779001358] [2021-08-21 12:29:37,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:37,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:37,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:37,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:37,129 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) [2021-08-21 12:29:39,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:39,522 INFO L93 Difference]: Finished difference Result 8595 states and 30668 transitions. [2021-08-21 12:29:39,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-08-21 12:29:39,522 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 [2021-08-21 12:29:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:39,551 INFO L225 Difference]: With dead ends: 8595 [2021-08-21 12:29:39,552 INFO L226 Difference]: Without dead ends: 8492 [2021-08-21 12:29:39,553 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 1290.7ms TimeCoverageRelationStatistics Valid=311, Invalid=2769, Unknown=0, NotChecked=0, Total=3080 [2021-08-21 12:29:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8492 states. [2021-08-21 12:29:39,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8492 to 5186. [2021-08-21 12:29:39,699 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) [2021-08-21 12:29:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 18306 transitions. [2021-08-21 12:29:39,716 INFO L78 Accepts]: Start accepts. Automaton has 5186 states and 18306 transitions. Word has length 47 [2021-08-21 12:29:39,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:39,716 INFO L470 AbstractCegarLoop]: Abstraction has 5186 states and 18306 transitions. [2021-08-21 12:29:39,716 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) [2021-08-21 12:29:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5186 states and 18306 transitions. [2021-08-21 12:29:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:39,730 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:39,730 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:39,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-21 12:29:39,731 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash 923930395, now seen corresponding path program 6 times [2021-08-21 12:29:39,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:39,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412901090] [2021-08-21 12:29:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:39,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:40,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:40,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:40,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412901090] [2021-08-21 12:29:40,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412901090] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:40,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:40,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:29:40,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397066802] [2021-08-21 12:29:40,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:29:40,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:40,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:29:40,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:29:40,091 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) [2021-08-21 12:29:41,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:41,988 INFO L93 Difference]: Finished difference Result 7581 states and 26484 transitions. [2021-08-21 12:29:41,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-08-21 12:29:41,988 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 [2021-08-21 12:29:41,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:42,008 INFO L225 Difference]: With dead ends: 7581 [2021-08-21 12:29:42,008 INFO L226 Difference]: Without dead ends: 7444 [2021-08-21 12:29:42,009 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 511 ImplicationChecksByTransitivity, 1038.2ms TimeCoverageRelationStatistics Valid=249, Invalid=2007, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 12:29:42,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2021-08-21 12:29:42,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 5366. [2021-08-21 12:29:42,101 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) [2021-08-21 12:29:42,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18886 transitions. [2021-08-21 12:29:42,114 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18886 transitions. Word has length 47 [2021-08-21 12:29:42,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:42,114 INFO L470 AbstractCegarLoop]: Abstraction has 5366 states and 18886 transitions. [2021-08-21 12:29:42,114 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) [2021-08-21 12:29:42,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18886 transitions. [2021-08-21 12:29:42,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:42,124 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:42,124 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:42,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-21 12:29:42,124 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:42,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1054944067, now seen corresponding path program 7 times [2021-08-21 12:29:42,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:42,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507952101] [2021-08-21 12:29:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:42,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:42,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:42,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:42,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507952101] [2021-08-21 12:29:42,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507952101] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:42,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:42,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:42,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881934995] [2021-08-21 12:29:42,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:42,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:42,486 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) [2021-08-21 12:29:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:44,873 INFO L93 Difference]: Finished difference Result 8646 states and 30471 transitions. [2021-08-21 12:29:44,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 12:29:44,873 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 [2021-08-21 12:29:44,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:44,895 INFO L225 Difference]: With dead ends: 8646 [2021-08-21 12:29:44,895 INFO L226 Difference]: Without dead ends: 8557 [2021-08-21 12:29:44,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1275.6ms TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 12:29:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8557 states. [2021-08-21 12:29:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8557 to 5370. [2021-08-21 12:29:44,997 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) [2021-08-21 12:29:45,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 18894 transitions. [2021-08-21 12:29:45,011 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 18894 transitions. Word has length 47 [2021-08-21 12:29:45,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:45,011 INFO L470 AbstractCegarLoop]: Abstraction has 5370 states and 18894 transitions. [2021-08-21 12:29:45,012 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) [2021-08-21 12:29:45,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 18894 transitions. [2021-08-21 12:29:45,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:45,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:45,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:45,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-21 12:29:45,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:45,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1905595975, now seen corresponding path program 8 times [2021-08-21 12:29:45,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:45,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549077793] [2021-08-21 12:29:45,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:45,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:45,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:45,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549077793] [2021-08-21 12:29:45,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549077793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:45,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:45,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:45,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137772548] [2021-08-21 12:29:45,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:45,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:45,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:45,367 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) [2021-08-21 12:29:47,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:47,966 INFO L93 Difference]: Finished difference Result 9233 states and 32861 transitions. [2021-08-21 12:29:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 12:29:47,996 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 [2021-08-21 12:29:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:48,020 INFO L225 Difference]: With dead ends: 9233 [2021-08-21 12:29:48,020 INFO L226 Difference]: Without dead ends: 9102 [2021-08-21 12:29:48,021 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 832 ImplicationChecksByTransitivity, 1407.0ms TimeCoverageRelationStatistics Valid=330, Invalid=2976, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 12:29:48,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9102 states. [2021-08-21 12:29:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9102 to 5330. [2021-08-21 12:29:48,132 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) [2021-08-21 12:29:48,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5330 states to 5330 states and 18762 transitions. [2021-08-21 12:29:48,145 INFO L78 Accepts]: Start accepts. Automaton has 5330 states and 18762 transitions. Word has length 47 [2021-08-21 12:29:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:48,145 INFO L470 AbstractCegarLoop]: Abstraction has 5330 states and 18762 transitions. [2021-08-21 12:29:48,145 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) [2021-08-21 12:29:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5330 states and 18762 transitions. [2021-08-21 12:29:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:48,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:48,156 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:48,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-21 12:29:48,156 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:48,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:48,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1744544869, now seen corresponding path program 9 times [2021-08-21 12:29:48,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:48,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53729279] [2021-08-21 12:29:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:48,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:48,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:48,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:48,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53729279] [2021-08-21 12:29:48,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53729279] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:48,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:48,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:29:48,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839072368] [2021-08-21 12:29:48,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:29:48,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:48,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:29:48,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:29:48,497 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) [2021-08-21 12:29:49,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:49,815 INFO L93 Difference]: Finished difference Result 6689 states and 23271 transitions. [2021-08-21 12:29:49,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:29:49,815 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 [2021-08-21 12:29:49,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:49,830 INFO L225 Difference]: With dead ends: 6689 [2021-08-21 12:29:49,830 INFO L226 Difference]: Without dead ends: 6562 [2021-08-21 12:29:49,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 763.6ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:29:49,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2021-08-21 12:29:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5342. [2021-08-21 12:29:49,921 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) [2021-08-21 12:29:49,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 18792 transitions. [2021-08-21 12:29:49,934 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 18792 transitions. Word has length 47 [2021-08-21 12:29:49,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:49,934 INFO L470 AbstractCegarLoop]: Abstraction has 5342 states and 18792 transitions. [2021-08-21 12:29:49,934 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) [2021-08-21 12:29:49,934 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 18792 transitions. [2021-08-21 12:29:49,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:49,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:49,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:49,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-21 12:29:49,944 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:49,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:49,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1199673823, now seen corresponding path program 10 times [2021-08-21 12:29:49,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:49,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17739911] [2021-08-21 12:29:49,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:49,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:50,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:50,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17739911] [2021-08-21 12:29:50,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17739911] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:50,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:50,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:29:50,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312848436] [2021-08-21 12:29:50,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:29:50,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:29:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:29:50,318 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) [2021-08-21 12:29:52,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:52,687 INFO L93 Difference]: Finished difference Result 8910 states and 31376 transitions. [2021-08-21 12:29:52,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 12:29:52,688 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 [2021-08-21 12:29:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:52,707 INFO L225 Difference]: With dead ends: 8910 [2021-08-21 12:29:52,708 INFO L226 Difference]: Without dead ends: 8821 [2021-08-21 12:29:52,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 1287.9ms TimeCoverageRelationStatistics Valid=285, Invalid=2367, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 12:29:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8821 states. [2021-08-21 12:29:52,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8821 to 5358. [2021-08-21 12:29:52,809 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) [2021-08-21 12:29:52,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18838 transitions. [2021-08-21 12:29:52,822 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18838 transitions. Word has length 47 [2021-08-21 12:29:52,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:52,822 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 18838 transitions. [2021-08-21 12:29:52,822 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) [2021-08-21 12:29:52,823 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18838 transitions. [2021-08-21 12:29:52,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:52,833 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:52,833 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:52,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-21 12:29:52,833 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:52,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:52,834 INFO L82 PathProgramCache]: Analyzing trace with hash 349021915, now seen corresponding path program 11 times [2021-08-21 12:29:52,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:52,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864483778] [2021-08-21 12:29:52,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:52,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:53,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:53,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864483778] [2021-08-21 12:29:53,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864483778] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:53,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:53,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:29:53,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630430579] [2021-08-21 12:29:53,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:29:53,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:53,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:29:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:29:53,205 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) [2021-08-21 12:29:56,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:56,048 INFO L93 Difference]: Finished difference Result 8807 states and 31346 transitions. [2021-08-21 12:29:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-08-21 12:29:56,048 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 [2021-08-21 12:29:56,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:56,071 INFO L225 Difference]: With dead ends: 8807 [2021-08-21 12:29:56,071 INFO L226 Difference]: Without dead ends: 8704 [2021-08-21 12:29:56,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 1708.4ms TimeCoverageRelationStatistics Valid=405, Invalid=3755, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 12:29:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2021-08-21 12:29:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 5338. [2021-08-21 12:29:56,182 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) [2021-08-21 12:29:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18786 transitions. [2021-08-21 12:29:56,194 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18786 transitions. Word has length 47 [2021-08-21 12:29:56,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:56,195 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 18786 transitions. [2021-08-21 12:29:56,195 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) [2021-08-21 12:29:56,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18786 transitions. [2021-08-21 12:29:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:56,206 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:56,206 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:56,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-21 12:29:56,207 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:56,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:56,207 INFO L82 PathProgramCache]: Analyzing trace with hash -202621511, now seen corresponding path program 12 times [2021-08-21 12:29:56,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:56,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163656386] [2021-08-21 12:29:56,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:56,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:56,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:56,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163656386] [2021-08-21 12:29:56,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163656386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:56,572 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:56,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:29:56,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982654418] [2021-08-21 12:29:56,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:29:56,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:56,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:29:56,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:29:56,573 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) [2021-08-21 12:29:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:57,813 INFO L93 Difference]: Finished difference Result 6388 states and 22235 transitions. [2021-08-21 12:29:57,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:29:57,813 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 [2021-08-21 12:29:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:57,826 INFO L225 Difference]: With dead ends: 6388 [2021-08-21 12:29:57,826 INFO L226 Difference]: Without dead ends: 6261 [2021-08-21 12:29:57,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 705.1ms TimeCoverageRelationStatistics Valid=152, Invalid=1408, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:29:57,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-08-21 12:29:57,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5350. [2021-08-21 12:29:57,969 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) [2021-08-21 12:29:57,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5350 states to 5350 states and 18816 transitions. [2021-08-21 12:29:57,981 INFO L78 Accepts]: Start accepts. Automaton has 5350 states and 18816 transitions. Word has length 47 [2021-08-21 12:29:57,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:57,981 INFO L470 AbstractCegarLoop]: Abstraction has 5350 states and 18816 transitions. [2021-08-21 12:29:57,983 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) [2021-08-21 12:29:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5350 states and 18816 transitions. [2021-08-21 12:29:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:57,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:57,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:57,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-21 12:29:57,993 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:57,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:57,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1624749749, now seen corresponding path program 13 times [2021-08-21 12:29:57,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:57,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894861277] [2021-08-21 12:29:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:57,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:29:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:29:58,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:29:58,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894861277] [2021-08-21 12:29:58,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894861277] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:29:58,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:29:58,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:29:58,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688184337] [2021-08-21 12:29:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:29:58,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:29:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:29:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:29:58,333 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) [2021-08-21 12:29:59,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:29:59,553 INFO L93 Difference]: Finished difference Result 6457 states and 22437 transitions. [2021-08-21 12:29:59,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:29:59,554 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 [2021-08-21 12:29:59,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:29:59,568 INFO L225 Difference]: With dead ends: 6457 [2021-08-21 12:29:59,568 INFO L226 Difference]: Without dead ends: 6360 [2021-08-21 12:29:59,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 671.1ms TimeCoverageRelationStatistics Valid=147, Invalid=1335, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:29:59,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6360 states. [2021-08-21 12:29:59,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6360 to 5356. [2021-08-21 12:29:59,652 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) [2021-08-21 12:29:59,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5356 states to 5356 states and 18831 transitions. [2021-08-21 12:29:59,663 INFO L78 Accepts]: Start accepts. Automaton has 5356 states and 18831 transitions. Word has length 47 [2021-08-21 12:29:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:29:59,664 INFO L470 AbstractCegarLoop]: Abstraction has 5356 states and 18831 transitions. [2021-08-21 12:29:59,664 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) [2021-08-21 12:29:59,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5356 states and 18831 transitions. [2021-08-21 12:29:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:29:59,672 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:29:59,672 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:29:59,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-21 12:29:59,673 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:29:59,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:29:59,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1627423575, now seen corresponding path program 14 times [2021-08-21 12:29:59,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:29:59,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032748576] [2021-08-21 12:29:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:29:59,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:29:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:00,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:00,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:00,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032748576] [2021-08-21 12:30:00,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032748576] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:00,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:00,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:00,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662396952] [2021-08-21 12:30:00,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:00,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:00,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:00,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:00,012 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) [2021-08-21 12:30:01,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:01,382 INFO L93 Difference]: Finished difference Result 6358 states and 22132 transitions. [2021-08-21 12:30:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:30:01,383 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 [2021-08-21 12:30:01,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:01,400 INFO L225 Difference]: With dead ends: 6358 [2021-08-21 12:30:01,400 INFO L226 Difference]: Without dead ends: 6249 [2021-08-21 12:30:01,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 732.2ms TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:30:01,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6249 states. [2021-08-21 12:30:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6249 to 5338. [2021-08-21 12:30:01,485 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) [2021-08-21 12:30:01,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 18782 transitions. [2021-08-21 12:30:01,498 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 18782 transitions. Word has length 47 [2021-08-21 12:30:01,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:01,499 INFO L470 AbstractCegarLoop]: Abstraction has 5338 states and 18782 transitions. [2021-08-21 12:30:01,499 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) [2021-08-21 12:30:01,499 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 18782 transitions. [2021-08-21 12:30:01,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:01,508 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:01,508 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:01,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-21 12:30:01,508 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash 318951903, now seen corresponding path program 15 times [2021-08-21 12:30:01,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:01,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512351934] [2021-08-21 12:30:01,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:01,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:01,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:01,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512351934] [2021-08-21 12:30:01,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512351934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:01,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:01,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:01,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383746571] [2021-08-21 12:30:01,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:01,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:01,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:01,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:01,886 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) [2021-08-21 12:30:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:03,578 INFO L93 Difference]: Finished difference Result 6590 states and 22853 transitions. [2021-08-21 12:30:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:30:03,579 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 [2021-08-21 12:30:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:03,598 INFO L225 Difference]: With dead ends: 6590 [2021-08-21 12:30:03,598 INFO L226 Difference]: Without dead ends: 6469 [2021-08-21 12:30:03,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 992.1ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:30:03,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2021-08-21 12:30:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 5344. [2021-08-21 12:30:03,689 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) [2021-08-21 12:30:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 18795 transitions. [2021-08-21 12:30:03,703 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 18795 transitions. Word has length 47 [2021-08-21 12:30:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:03,703 INFO L470 AbstractCegarLoop]: Abstraction has 5344 states and 18795 transitions. [2021-08-21 12:30:03,703 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) [2021-08-21 12:30:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 18795 transitions. [2021-08-21 12:30:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:03,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:03,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:03,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-21 12:30:03,714 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:03,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:03,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1890373339, now seen corresponding path program 16 times [2021-08-21 12:30:03,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:03,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785329087] [2021-08-21 12:30:03,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:03,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:04,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:04,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785329087] [2021-08-21 12:30:04,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785329087] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:04,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:04,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:04,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213845065] [2021-08-21 12:30:04,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:04,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:04,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:04,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:04,167 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) [2021-08-21 12:30:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:06,090 INFO L93 Difference]: Finished difference Result 7051 states and 24466 transitions. [2021-08-21 12:30:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 12:30:06,090 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 [2021-08-21 12:30:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:06,106 INFO L225 Difference]: With dead ends: 7051 [2021-08-21 12:30:06,106 INFO L226 Difference]: Without dead ends: 6956 [2021-08-21 12:30:06,107 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 548 ImplicationChecksByTransitivity, 1106.2ms TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2021-08-21 12:30:06,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6956 states. [2021-08-21 12:30:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6956 to 5346. [2021-08-21 12:30:06,201 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) [2021-08-21 12:30:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 18800 transitions. [2021-08-21 12:30:06,217 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 18800 transitions. Word has length 47 [2021-08-21 12:30:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:06,217 INFO L470 AbstractCegarLoop]: Abstraction has 5346 states and 18800 transitions. [2021-08-21 12:30:06,217 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) [2021-08-21 12:30:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 18800 transitions. [2021-08-21 12:30:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:06,230 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:06,230 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:06,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-21 12:30:06,230 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:06,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:06,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2105702279, now seen corresponding path program 17 times [2021-08-21 12:30:06,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:06,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830331570] [2021-08-21 12:30:06,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:06,231 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:06,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:06,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830331570] [2021-08-21 12:30:06,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830331570] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:06,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:06,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:30:06,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941157198] [2021-08-21 12:30:06,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:30:06,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:30:06,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:30:06,665 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) [2021-08-21 12:30:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:08,023 INFO L93 Difference]: Finished difference Result 6453 states and 22421 transitions. [2021-08-21 12:30:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:30:08,024 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 [2021-08-21 12:30:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:08,038 INFO L225 Difference]: With dead ends: 6453 [2021-08-21 12:30:08,038 INFO L226 Difference]: Without dead ends: 6356 [2021-08-21 12:30:08,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 777.9ms TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:30:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6356 states. [2021-08-21 12:30:08,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6356 to 5352. [2021-08-21 12:30:08,133 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) [2021-08-21 12:30:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5352 states to 5352 states and 18815 transitions. [2021-08-21 12:30:08,146 INFO L78 Accepts]: Start accepts. Automaton has 5352 states and 18815 transitions. Word has length 47 [2021-08-21 12:30:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:08,146 INFO L470 AbstractCegarLoop]: Abstraction has 5352 states and 18815 transitions. [2021-08-21 12:30:08,146 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) [2021-08-21 12:30:08,146 INFO L276 IsEmpty]: Start isEmpty. Operand 5352 states and 18815 transitions. [2021-08-21 12:30:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:08,155 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:08,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:08,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-21 12:30:08,165 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:08,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:08,166 INFO L82 PathProgramCache]: Analyzing trace with hash 463844507, now seen corresponding path program 18 times [2021-08-21 12:30:08,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:08,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432134644] [2021-08-21 12:30:08,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:08,166 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:08,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:08,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432134644] [2021-08-21 12:30:08,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432134644] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:08,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:08,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:08,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908566352] [2021-08-21 12:30:08,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:08,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:08,608 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) [2021-08-21 12:30:09,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:09,779 INFO L93 Difference]: Finished difference Result 6354 states and 22116 transitions. [2021-08-21 12:30:09,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:30:09,779 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 [2021-08-21 12:30:09,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:09,794 INFO L225 Difference]: With dead ends: 6354 [2021-08-21 12:30:09,795 INFO L226 Difference]: Without dead ends: 6251 [2021-08-21 12:30:09,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 710.4ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:30:09,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2021-08-21 12:30:09,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 5340. [2021-08-21 12:30:09,874 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) [2021-08-21 12:30:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 18787 transitions. [2021-08-21 12:30:09,886 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 18787 transitions. Word has length 47 [2021-08-21 12:30:09,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:09,886 INFO L470 AbstractCegarLoop]: Abstraction has 5340 states and 18787 transitions. [2021-08-21 12:30:09,886 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) [2021-08-21 12:30:09,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 18787 transitions. [2021-08-21 12:30:09,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:09,895 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:09,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:09,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-21 12:30:09,895 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:09,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:09,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1760511687, now seen corresponding path program 19 times [2021-08-21 12:30:09,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:09,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524789483] [2021-08-21 12:30:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:09,895 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:10,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:10,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524789483] [2021-08-21 12:30:10,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524789483] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:10,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:10,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:30:10,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201906186] [2021-08-21 12:30:10,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:30:10,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:30:10,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:30:10,231 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) [2021-08-21 12:30:11,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:11,550 INFO L93 Difference]: Finished difference Result 6323 states and 22051 transitions. [2021-08-21 12:30:11,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:30:11,551 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 [2021-08-21 12:30:11,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:11,565 INFO L225 Difference]: With dead ends: 6323 [2021-08-21 12:30:11,566 INFO L226 Difference]: Without dead ends: 6186 [2021-08-21 12:30:11,566 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 733.5ms TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:30:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6186 states. [2021-08-21 12:30:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6186 to 5382. [2021-08-21 12:30:11,647 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) [2021-08-21 12:30:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18892 transitions. [2021-08-21 12:30:11,661 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18892 transitions. Word has length 47 [2021-08-21 12:30:11,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:11,661 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18892 transitions. [2021-08-21 12:30:11,661 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) [2021-08-21 12:30:11,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18892 transitions. [2021-08-21 12:30:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:11,670 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:11,670 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:11,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-21 12:30:11,670 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:11,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1725515001, now seen corresponding path program 20 times [2021-08-21 12:30:11,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:11,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540613815] [2021-08-21 12:30:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:11,671 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:12,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:12,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540613815] [2021-08-21 12:30:12,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540613815] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:12,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:12,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:12,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356562346] [2021-08-21 12:30:12,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:12,034 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:12,034 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) [2021-08-21 12:30:13,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:13,533 INFO L93 Difference]: Finished difference Result 6307 states and 21983 transitions. [2021-08-21 12:30:13,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:30:13,533 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 [2021-08-21 12:30:13,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:13,549 INFO L225 Difference]: With dead ends: 6307 [2021-08-21 12:30:13,549 INFO L226 Difference]: Without dead ends: 6162 [2021-08-21 12:30:13,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 848.0ms TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:30:13,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6162 states. [2021-08-21 12:30:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6162 to 5358. [2021-08-21 12:30:13,642 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) [2021-08-21 12:30:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5358 states to 5358 states and 18826 transitions. [2021-08-21 12:30:13,656 INFO L78 Accepts]: Start accepts. Automaton has 5358 states and 18826 transitions. Word has length 47 [2021-08-21 12:30:13,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:13,656 INFO L470 AbstractCegarLoop]: Abstraction has 5358 states and 18826 transitions. [2021-08-21 12:30:13,656 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) [2021-08-21 12:30:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5358 states and 18826 transitions. [2021-08-21 12:30:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:13,666 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:13,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:13,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-21 12:30:13,667 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:13,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1669556517, now seen corresponding path program 21 times [2021-08-21 12:30:13,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:13,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232872246] [2021-08-21 12:30:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:13,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:14,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:14,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:14,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232872246] [2021-08-21 12:30:14,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232872246] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:14,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:14,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:14,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532975327] [2021-08-21 12:30:14,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:14,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:14,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:14,025 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) [2021-08-21 12:30:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:17,184 INFO L93 Difference]: Finished difference Result 9468 states and 33376 transitions. [2021-08-21 12:30:17,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 12:30:17,184 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 [2021-08-21 12:30:17,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:17,205 INFO L225 Difference]: With dead ends: 9468 [2021-08-21 12:30:17,205 INFO L226 Difference]: Without dead ends: 9331 [2021-08-21 12:30:17,206 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1738.9ms TimeCoverageRelationStatistics Valid=402, Invalid=3504, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 12:30:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2021-08-21 12:30:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 5392. [2021-08-21 12:30:17,303 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) [2021-08-21 12:30:17,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18915 transitions. [2021-08-21 12:30:17,314 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18915 transitions. Word has length 47 [2021-08-21 12:30:17,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:17,315 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18915 transitions. [2021-08-21 12:30:17,315 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) [2021-08-21 12:30:17,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18915 transitions. [2021-08-21 12:30:17,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:17,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:17,325 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:17,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-21 12:30:17,325 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:17,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1774758871, now seen corresponding path program 22 times [2021-08-21 12:30:17,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:17,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757522164] [2021-08-21 12:30:17,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:17,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:17,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:17,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757522164] [2021-08-21 12:30:17,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757522164] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:17,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:17,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:17,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427756314] [2021-08-21 12:30:17,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:17,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:17,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:17,707 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) [2021-08-21 12:30:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:21,186 INFO L93 Difference]: Finished difference Result 10103 states and 35934 transitions. [2021-08-21 12:30:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-21 12:30:21,187 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 [2021-08-21 12:30:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:21,211 INFO L225 Difference]: With dead ends: 10103 [2021-08-21 12:30:21,212 INFO L226 Difference]: Without dead ends: 9996 [2021-08-21 12:30:21,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 1886.3ms TimeCoverageRelationStatistics Valid=433, Invalid=4259, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 12:30:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2021-08-21 12:30:21,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 5376. [2021-08-21 12:30:21,322 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) [2021-08-21 12:30:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 18871 transitions. [2021-08-21 12:30:21,333 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 18871 transitions. Word has length 47 [2021-08-21 12:30:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:21,333 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 18871 transitions. [2021-08-21 12:30:21,333 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) [2021-08-21 12:30:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 18871 transitions. [2021-08-21 12:30:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:21,379 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:21,379 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:21,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-21 12:30:21,380 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash -839606979, now seen corresponding path program 23 times [2021-08-21 12:30:21,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:21,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198643613] [2021-08-21 12:30:21,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:21,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:21,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:21,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198643613] [2021-08-21 12:30:21,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198643613] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:21,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:21,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:21,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453349331] [2021-08-21 12:30:21,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:21,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:21,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:21,736 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) [2021-08-21 12:30:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:23,374 INFO L93 Difference]: Finished difference Result 6505 states and 22569 transitions. [2021-08-21 12:30:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:30:23,375 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 [2021-08-21 12:30:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:23,390 INFO L225 Difference]: With dead ends: 6505 [2021-08-21 12:30:23,390 INFO L226 Difference]: Without dead ends: 6384 [2021-08-21 12:30:23,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 988.3ms TimeCoverageRelationStatistics Valid=207, Invalid=1955, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:30:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-08-21 12:30:23,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5382. [2021-08-21 12:30:23,471 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) [2021-08-21 12:30:23,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18884 transitions. [2021-08-21 12:30:23,483 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18884 transitions. Word has length 47 [2021-08-21 12:30:23,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:23,484 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18884 transitions. [2021-08-21 12:30:23,484 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) [2021-08-21 12:30:23,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18884 transitions. [2021-08-21 12:30:23,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:23,493 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:23,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:23,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-21 12:30:23,493 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:23,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:23,494 INFO L82 PathProgramCache]: Analyzing trace with hash 731814457, now seen corresponding path program 24 times [2021-08-21 12:30:23,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:23,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538895922] [2021-08-21 12:30:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:23,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:23,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:23,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538895922] [2021-08-21 12:30:23,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538895922] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:23,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:23,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:23,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646953714] [2021-08-21 12:30:23,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:23,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:23,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:23,854 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) [2021-08-21 12:30:25,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:25,900 INFO L93 Difference]: Finished difference Result 6877 states and 23923 transitions. [2021-08-21 12:30:25,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 12:30:25,901 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 [2021-08-21 12:30:25,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:25,918 INFO L225 Difference]: With dead ends: 6877 [2021-08-21 12:30:25,918 INFO L226 Difference]: Without dead ends: 6633 [2021-08-21 12:30:25,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1151.3ms TimeCoverageRelationStatistics Valid=249, Invalid=2403, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 12:30:25,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-08-21 12:30:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5378. [2021-08-21 12:30:26,002 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) [2021-08-21 12:30:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18874 transitions. [2021-08-21 12:30:26,016 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18874 transitions. Word has length 47 [2021-08-21 12:30:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:26,016 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 18874 transitions. [2021-08-21 12:30:26,016 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) [2021-08-21 12:30:26,016 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18874 transitions. [2021-08-21 12:30:26,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:26,025 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:26,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:26,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-21 12:30:26,025 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:26,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:26,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1030706135, now seen corresponding path program 25 times [2021-08-21 12:30:26,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:26,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287777038] [2021-08-21 12:30:26,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:26,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:26,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:26,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287777038] [2021-08-21 12:30:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287777038] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:26,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:30:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828458365] [2021-08-21 12:30:26,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:30:26,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:26,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:30:26,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:30:26,383 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) [2021-08-21 12:30:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:27,707 INFO L93 Difference]: Finished difference Result 6370 states and 22134 transitions. [2021-08-21 12:30:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:30:27,708 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 [2021-08-21 12:30:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:27,724 INFO L225 Difference]: With dead ends: 6370 [2021-08-21 12:30:27,724 INFO L226 Difference]: Without dead ends: 6273 [2021-08-21 12:30:27,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 786.0ms TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:30:27,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6273 states. [2021-08-21 12:30:27,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6273 to 5392. [2021-08-21 12:30:27,804 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) [2021-08-21 12:30:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18901 transitions. [2021-08-21 12:30:27,818 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18901 transitions. Word has length 47 [2021-08-21 12:30:27,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:27,818 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18901 transitions. [2021-08-21 12:30:27,818 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) [2021-08-21 12:30:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18901 transitions. [2021-08-21 12:30:27,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:27,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:27,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:27,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-21 12:30:27,828 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:27,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:27,828 INFO L82 PathProgramCache]: Analyzing trace with hash -694714375, now seen corresponding path program 26 times [2021-08-21 12:30:27,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:27,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295254635] [2021-08-21 12:30:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:27,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:28,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:28,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:28,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295254635] [2021-08-21 12:30:28,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295254635] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:28,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:28,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:28,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838186597] [2021-08-21 12:30:28,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:28,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:28,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:28,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:28,231 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) [2021-08-21 12:30:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:29,591 INFO L93 Difference]: Finished difference Result 6271 states and 21829 transitions. [2021-08-21 12:30:29,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:30:29,592 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 [2021-08-21 12:30:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:29,606 INFO L225 Difference]: With dead ends: 6271 [2021-08-21 12:30:29,606 INFO L226 Difference]: Without dead ends: 6154 [2021-08-21 12:30:29,607 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 793.7ms TimeCoverageRelationStatistics Valid=164, Invalid=1558, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:30:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2021-08-21 12:30:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 5366. [2021-08-21 12:30:29,689 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) [2021-08-21 12:30:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5366 states to 5366 states and 18836 transitions. [2021-08-21 12:30:29,701 INFO L78 Accepts]: Start accepts. Automaton has 5366 states and 18836 transitions. Word has length 47 [2021-08-21 12:30:29,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:29,701 INFO L470 AbstractCegarLoop]: Abstraction has 5366 states and 18836 transitions. [2021-08-21 12:30:29,701 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) [2021-08-21 12:30:29,701 INFO L276 IsEmpty]: Start isEmpty. Operand 5366 states and 18836 transitions. [2021-08-21 12:30:29,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:29,710 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:29,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:29,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-21 12:30:29,710 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:29,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:29,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1165544903, now seen corresponding path program 27 times [2021-08-21 12:30:29,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:29,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925775186] [2021-08-21 12:30:29,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:29,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:30,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:30,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925775186] [2021-08-21 12:30:30,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925775186] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:30,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:30,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:30,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969132577] [2021-08-21 12:30:30,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:30,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:30,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:30,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:30,061 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) [2021-08-21 12:30:31,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:31,457 INFO L93 Difference]: Finished difference Result 6663 states and 23172 transitions. [2021-08-21 12:30:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:30:31,457 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 [2021-08-21 12:30:31,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:31,473 INFO L225 Difference]: With dead ends: 6663 [2021-08-21 12:30:31,473 INFO L226 Difference]: Without dead ends: 6536 [2021-08-21 12:30:31,474 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 829.9ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:30:31,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6536 states. [2021-08-21 12:30:31,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6536 to 5386. [2021-08-21 12:30:31,610 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) [2021-08-21 12:30:31,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18894 transitions. [2021-08-21 12:30:31,624 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18894 transitions. Word has length 47 [2021-08-21 12:30:31,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:31,624 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18894 transitions. [2021-08-21 12:30:31,624 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) [2021-08-21 12:30:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18894 transitions. [2021-08-21 12:30:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:31,634 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:31,634 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:31,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-21 12:30:31,634 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:31,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:31,635 INFO L82 PathProgramCache]: Analyzing trace with hash 1778673789, now seen corresponding path program 28 times [2021-08-21 12:30:31,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:31,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488945073] [2021-08-21 12:30:31,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:31,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:31,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:31,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:31,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488945073] [2021-08-21 12:30:31,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488945073] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:31,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:31,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:31,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892752173] [2021-08-21 12:30:31,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:31,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:31,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:31,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:31,974 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) [2021-08-21 12:30:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:34,199 INFO L93 Difference]: Finished difference Result 8560 states and 30207 transitions. [2021-08-21 12:30:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-08-21 12:30:34,199 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 [2021-08-21 12:30:34,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:34,219 INFO L225 Difference]: With dead ends: 8560 [2021-08-21 12:30:34,219 INFO L226 Difference]: Without dead ends: 8471 [2021-08-21 12:30:34,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1247.9ms TimeCoverageRelationStatistics Valid=281, Invalid=2475, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 12:30:34,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8471 states. [2021-08-21 12:30:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8471 to 5410. [2021-08-21 12:30:34,318 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) [2021-08-21 12:30:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5410 states to 5410 states and 18968 transitions. [2021-08-21 12:30:34,334 INFO L78 Accepts]: Start accepts. Automaton has 5410 states and 18968 transitions. Word has length 47 [2021-08-21 12:30:34,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:34,334 INFO L470 AbstractCegarLoop]: Abstraction has 5410 states and 18968 transitions. [2021-08-21 12:30:34,334 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) [2021-08-21 12:30:34,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5410 states and 18968 transitions. [2021-08-21 12:30:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:34,343 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:34,343 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:34,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-21 12:30:34,343 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:34,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:34,343 INFO L82 PathProgramCache]: Analyzing trace with hash 928021881, now seen corresponding path program 29 times [2021-08-21 12:30:34,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:34,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499729429] [2021-08-21 12:30:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:34,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:34,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:34,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499729429] [2021-08-21 12:30:34,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499729429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:34,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:34,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:34,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664536323] [2021-08-21 12:30:34,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:34,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:34,729 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) [2021-08-21 12:30:37,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:37,563 INFO L93 Difference]: Finished difference Result 9269 states and 32989 transitions. [2021-08-21 12:30:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 12:30:37,563 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 [2021-08-21 12:30:37,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:37,600 INFO L225 Difference]: With dead ends: 9269 [2021-08-21 12:30:37,600 INFO L226 Difference]: Without dead ends: 9166 [2021-08-21 12:30:37,601 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 1640.5ms TimeCoverageRelationStatistics Valid=357, Invalid=3549, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 12:30:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9166 states. [2021-08-21 12:30:37,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9166 to 5390. [2021-08-21 12:30:37,707 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) [2021-08-21 12:30:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18916 transitions. [2021-08-21 12:30:37,722 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18916 transitions. Word has length 47 [2021-08-21 12:30:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:37,723 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18916 transitions. [2021-08-21 12:30:37,723 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) [2021-08-21 12:30:37,723 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18916 transitions. [2021-08-21 12:30:37,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:37,732 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:37,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:37,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-21 12:30:37,733 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:37,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:37,733 INFO L82 PathProgramCache]: Analyzing trace with hash 376378455, now seen corresponding path program 30 times [2021-08-21 12:30:37,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:37,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429372504] [2021-08-21 12:30:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:37,733 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:38,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:38,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429372504] [2021-08-21 12:30:38,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429372504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:38,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:38,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:38,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363897528] [2021-08-21 12:30:38,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:38,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:38,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:38,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:38,092 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) [2021-08-21 12:30:39,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:39,470 INFO L93 Difference]: Finished difference Result 6541 states and 22685 transitions. [2021-08-21 12:30:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:30:39,471 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 [2021-08-21 12:30:39,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:39,490 INFO L225 Difference]: With dead ends: 6541 [2021-08-21 12:30:39,490 INFO L226 Difference]: Without dead ends: 6414 [2021-08-21 12:30:39,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 814.3ms TimeCoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:30:39,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2021-08-21 12:30:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 5402. [2021-08-21 12:30:39,569 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) [2021-08-21 12:30:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18946 transitions. [2021-08-21 12:30:39,582 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18946 transitions. Word has length 47 [2021-08-21 12:30:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:39,582 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 18946 transitions. [2021-08-21 12:30:39,582 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) [2021-08-21 12:30:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18946 transitions. [2021-08-21 12:30:39,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:39,590 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:39,590 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:39,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-21 12:30:39,590 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:39,591 INFO L82 PathProgramCache]: Analyzing trace with hash -2091217581, now seen corresponding path program 31 times [2021-08-21 12:30:39,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:39,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766056321] [2021-08-21 12:30:39,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:39,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:39,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:39,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766056321] [2021-08-21 12:30:39,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766056321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:39,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:39,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:39,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870955855] [2021-08-21 12:30:39,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:39,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:39,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:39,943 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) [2021-08-21 12:30:41,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:41,417 INFO L93 Difference]: Finished difference Result 6630 states and 22927 transitions. [2021-08-21 12:30:41,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:30:41,418 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 [2021-08-21 12:30:41,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:41,437 INFO L225 Difference]: With dead ends: 6630 [2021-08-21 12:30:41,437 INFO L226 Difference]: Without dead ends: 6533 [2021-08-21 12:30:41,438 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 903.4ms TimeCoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:30:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6533 states. [2021-08-21 12:30:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6533 to 5408. [2021-08-21 12:30:41,596 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) [2021-08-21 12:30:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18961 transitions. [2021-08-21 12:30:41,623 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18961 transitions. Word has length 47 [2021-08-21 12:30:41,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:41,623 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 18961 transitions. [2021-08-21 12:30:41,623 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) [2021-08-21 12:30:41,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18961 transitions. [2021-08-21 12:30:41,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:41,649 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:41,649 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:41,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-21 12:30:41,649 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:41,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:41,649 INFO L82 PathProgramCache]: Analyzing trace with hash -2088543755, now seen corresponding path program 32 times [2021-08-21 12:30:41,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:41,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789711566] [2021-08-21 12:30:41,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:41,650 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:41,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:42,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:42,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789711566] [2021-08-21 12:30:42,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789711566] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:42,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:42,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:42,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516054907] [2021-08-21 12:30:42,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:42,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:42,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:42,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:42,006 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) [2021-08-21 12:30:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:43,317 INFO L93 Difference]: Finished difference Result 6511 states and 22582 transitions. [2021-08-21 12:30:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:30:43,318 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 [2021-08-21 12:30:43,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:43,336 INFO L225 Difference]: With dead ends: 6511 [2021-08-21 12:30:43,336 INFO L226 Difference]: Without dead ends: 6402 [2021-08-21 12:30:43,336 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 777.6ms TimeCoverageRelationStatistics Valid=171, Invalid=1635, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:30:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-08-21 12:30:43,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 5390. [2021-08-21 12:30:43,426 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) [2021-08-21 12:30:43,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18912 transitions. [2021-08-21 12:30:43,440 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18912 transitions. Word has length 47 [2021-08-21 12:30:43,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:43,441 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18912 transitions. [2021-08-21 12:30:43,441 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) [2021-08-21 12:30:43,441 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18912 transitions. [2021-08-21 12:30:43,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:43,451 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:43,451 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:43,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-21 12:30:43,451 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:43,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:43,451 INFO L82 PathProgramCache]: Analyzing trace with hash 897951869, now seen corresponding path program 33 times [2021-08-21 12:30:43,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:43,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086250771] [2021-08-21 12:30:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:43,452 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:43,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:43,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086250771] [2021-08-21 12:30:43,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086250771] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:43,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:43,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:43,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954299348] [2021-08-21 12:30:43,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:43,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:43,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:43,794 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) [2021-08-21 12:30:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:45,465 INFO L93 Difference]: Finished difference Result 6620 states and 22930 transitions. [2021-08-21 12:30:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 12:30:45,465 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 [2021-08-21 12:30:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:45,480 INFO L225 Difference]: With dead ends: 6620 [2021-08-21 12:30:45,481 INFO L226 Difference]: Without dead ends: 6499 [2021-08-21 12:30:45,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 963.2ms TimeCoverageRelationStatistics Valid=215, Invalid=2137, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 12:30:45,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6499 states. [2021-08-21 12:30:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6499 to 5396. [2021-08-21 12:30:45,573 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) [2021-08-21 12:30:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5396 states to 5396 states and 18925 transitions. [2021-08-21 12:30:45,587 INFO L78 Accepts]: Start accepts. Automaton has 5396 states and 18925 transitions. Word has length 47 [2021-08-21 12:30:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:45,587 INFO L470 AbstractCegarLoop]: Abstraction has 5396 states and 18925 transitions. [2021-08-21 12:30:45,587 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) [2021-08-21 12:30:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5396 states and 18925 transitions. [2021-08-21 12:30:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:45,596 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:45,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:45,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-21 12:30:45,596 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:45,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:45,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1825593991, now seen corresponding path program 34 times [2021-08-21 12:30:45,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:45,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593351096] [2021-08-21 12:30:45,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:45,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:45,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:45,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:45,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593351096] [2021-08-21 12:30:45,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593351096] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:45,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:45,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:45,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750172596] [2021-08-21 12:30:45,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:45,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:45,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:45,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:45,957 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) [2021-08-21 12:30:48,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:48,037 INFO L93 Difference]: Finished difference Result 7773 states and 27053 transitions. [2021-08-21 12:30:48,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 12:30:48,037 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 [2021-08-21 12:30:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:48,055 INFO L225 Difference]: With dead ends: 7773 [2021-08-21 12:30:48,055 INFO L226 Difference]: Without dead ends: 7678 [2021-08-21 12:30:48,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 1169.0ms TimeCoverageRelationStatistics Valid=260, Invalid=2602, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 12:30:48,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2021-08-21 12:30:48,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5386. [2021-08-21 12:30:48,225 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) [2021-08-21 12:30:48,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18898 transitions. [2021-08-21 12:30:48,236 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18898 transitions. Word has length 47 [2021-08-21 12:30:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:48,236 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18898 transitions. [2021-08-21 12:30:48,236 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) [2021-08-21 12:30:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18898 transitions. [2021-08-21 12:30:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:48,246 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:48,246 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:48,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-21 12:30:48,246 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:48,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1526702313, now seen corresponding path program 35 times [2021-08-21 12:30:48,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:48,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535789065] [2021-08-21 12:30:48,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:48,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:48,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:48,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:48,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535789065] [2021-08-21 12:30:48,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535789065] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:48,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:48,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:48,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879465060] [2021-08-21 12:30:48,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:48,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:48,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:48,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:48,591 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) [2021-08-21 12:30:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:50,127 INFO L93 Difference]: Finished difference Result 6616 states and 22882 transitions. [2021-08-21 12:30:50,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:30:50,128 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 [2021-08-21 12:30:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:50,145 INFO L225 Difference]: With dead ends: 6616 [2021-08-21 12:30:50,145 INFO L226 Difference]: Without dead ends: 6519 [2021-08-21 12:30:50,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 962.7ms TimeCoverageRelationStatistics Valid=205, Invalid=1957, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:30:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6519 states. [2021-08-21 12:30:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6519 to 5394. [2021-08-21 12:30:50,242 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) [2021-08-21 12:30:50,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18916 transitions. [2021-08-21 12:30:50,258 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18916 transitions. Word has length 47 [2021-08-21 12:30:50,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:50,258 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 18916 transitions. [2021-08-21 12:30:50,258 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) [2021-08-21 12:30:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18916 transitions. [2021-08-21 12:30:50,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:50,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:50,267 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:50,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-21 12:30:50,267 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:50,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1042844473, now seen corresponding path program 36 times [2021-08-21 12:30:50,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:50,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715819083] [2021-08-21 12:30:50,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:50,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:50,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:50,629 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:50,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715819083] [2021-08-21 12:30:50,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715819083] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:50,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:50,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:50,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96589016] [2021-08-21 12:30:50,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:50,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:50,630 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) [2021-08-21 12:30:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:52,097 INFO L93 Difference]: Finished difference Result 6497 states and 22537 transitions. [2021-08-21 12:30:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 12:30:52,097 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 [2021-08-21 12:30:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:52,111 INFO L225 Difference]: With dead ends: 6497 [2021-08-21 12:30:52,112 INFO L226 Difference]: Without dead ends: 6394 [2021-08-21 12:30:52,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 828.6ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:30:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6394 states. [2021-08-21 12:30:52,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6394 to 5382. [2021-08-21 12:30:52,200 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) [2021-08-21 12:30:52,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18888 transitions. [2021-08-21 12:30:52,213 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18888 transitions. Word has length 47 [2021-08-21 12:30:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:52,213 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18888 transitions. [2021-08-21 12:30:52,213 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) [2021-08-21 12:30:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18888 transitions. [2021-08-21 12:30:52,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:52,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:52,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:52,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-21 12:30:52,224 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:52,224 INFO L82 PathProgramCache]: Analyzing trace with hash -539224437, now seen corresponding path program 37 times [2021-08-21 12:30:52,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:52,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742907891] [2021-08-21 12:30:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:52,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:52,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:52,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742907891] [2021-08-21 12:30:52,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742907891] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:52,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:52,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:52,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276922803] [2021-08-21 12:30:52,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:52,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:52,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:52,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:52,576 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) [2021-08-21 12:30:53,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:53,814 INFO L93 Difference]: Finished difference Result 6332 states and 22041 transitions. [2021-08-21 12:30:53,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:30:53,814 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 [2021-08-21 12:30:53,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:53,829 INFO L225 Difference]: With dead ends: 6332 [2021-08-21 12:30:53,829 INFO L226 Difference]: Without dead ends: 6205 [2021-08-21 12:30:53,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 709.3ms TimeCoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:30:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6205 states. [2021-08-21 12:30:53,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6205 to 5418. [2021-08-21 12:30:53,909 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) [2021-08-21 12:30:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 19002 transitions. [2021-08-21 12:30:53,922 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 19002 transitions. Word has length 47 [2021-08-21 12:30:53,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:53,922 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 19002 transitions. [2021-08-21 12:30:53,922 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) [2021-08-21 12:30:53,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 19002 transitions. [2021-08-21 12:30:53,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:53,930 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:53,930 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:53,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-21 12:30:53,931 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:53,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:53,931 INFO L82 PathProgramCache]: Analyzing trace with hash 1288146823, now seen corresponding path program 38 times [2021-08-21 12:30:53,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:53,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676308317] [2021-08-21 12:30:53,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:53,931 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:54,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:54,289 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676308317] [2021-08-21 12:30:54,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676308317] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:54,289 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:54,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:54,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423566719] [2021-08-21 12:30:54,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:54,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:54,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:54,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:54,290 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) [2021-08-21 12:30:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:55,711 INFO L93 Difference]: Finished difference Result 6451 states and 22378 transitions. [2021-08-21 12:30:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:30:55,711 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 [2021-08-21 12:30:55,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:55,725 INFO L225 Difference]: With dead ends: 6451 [2021-08-21 12:30:55,725 INFO L226 Difference]: Without dead ends: 6354 [2021-08-21 12:30:55,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 859.2ms TimeCoverageRelationStatistics Valid=168, Invalid=1638, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:30:55,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6354 states. [2021-08-21 12:30:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6354 to 5424. [2021-08-21 12:30:55,798 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) [2021-08-21 12:30:55,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19017 transitions. [2021-08-21 12:30:55,810 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19017 transitions. Word has length 47 [2021-08-21 12:30:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:55,810 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 19017 transitions. [2021-08-21 12:30:55,810 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) [2021-08-21 12:30:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19017 transitions. [2021-08-21 12:30:55,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:55,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:55,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:55,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-21 12:30:55,818 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:55,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1290820649, now seen corresponding path program 39 times [2021-08-21 12:30:55,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:55,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795805515] [2021-08-21 12:30:55,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:55,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:56,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:56,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:56,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795805515] [2021-08-21 12:30:56,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795805515] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:56,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:56,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001231409] [2021-08-21 12:30:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:56,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:56,168 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) [2021-08-21 12:30:57,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:57,408 INFO L93 Difference]: Finished difference Result 6302 states and 21938 transitions. [2021-08-21 12:30:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:30:57,409 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 [2021-08-21 12:30:57,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:57,423 INFO L225 Difference]: With dead ends: 6302 [2021-08-21 12:30:57,423 INFO L226 Difference]: Without dead ends: 6193 [2021-08-21 12:30:57,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 712.8ms TimeCoverageRelationStatistics Valid=153, Invalid=1407, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:30:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6193 states. [2021-08-21 12:30:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6193 to 5406. [2021-08-21 12:30:57,502 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) [2021-08-21 12:30:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 18960 transitions. [2021-08-21 12:30:57,517 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 18960 transitions. Word has length 47 [2021-08-21 12:30:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:57,518 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 18960 transitions. [2021-08-21 12:30:57,518 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) [2021-08-21 12:30:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 18960 transitions. [2021-08-21 12:30:57,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:57,529 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:57,529 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:57,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-21 12:30:57,530 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:57,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:57,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1390506559, now seen corresponding path program 40 times [2021-08-21 12:30:57,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:57,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159131445] [2021-08-21 12:30:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:57,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:57,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:57,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159131445] [2021-08-21 12:30:57,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159131445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:57,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:57,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:30:57,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369355023] [2021-08-21 12:30:57,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:30:57,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:57,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:30:57,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:30:57,910 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) [2021-08-21 12:30:59,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:30:59,141 INFO L93 Difference]: Finished difference Result 6337 states and 22094 transitions. [2021-08-21 12:30:59,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:30:59,141 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 [2021-08-21 12:30:59,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:30:59,154 INFO L225 Difference]: With dead ends: 6337 [2021-08-21 12:30:59,154 INFO L226 Difference]: Without dead ends: 6192 [2021-08-21 12:30:59,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 733.6ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:30:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-08-21 12:30:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5418. [2021-08-21 12:30:59,224 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) [2021-08-21 12:30:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5418 states to 5418 states and 18990 transitions. [2021-08-21 12:30:59,236 INFO L78 Accepts]: Start accepts. Automaton has 5418 states and 18990 transitions. Word has length 47 [2021-08-21 12:30:59,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:30:59,236 INFO L470 AbstractCegarLoop]: Abstraction has 5418 states and 18990 transitions. [2021-08-21 12:30:59,237 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) [2021-08-21 12:30:59,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5418 states and 18990 transitions. [2021-08-21 12:30:59,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:30:59,245 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:30:59,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:30:59,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-21 12:30:59,245 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:30:59,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:30:59,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2108036509, now seen corresponding path program 41 times [2021-08-21 12:30:59,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:30:59,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347919937] [2021-08-21 12:30:59,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:30:59,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:30:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:30:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:30:59,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:30:59,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347919937] [2021-08-21 12:30:59,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347919937] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:30:59,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:30:59,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:30:59,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525546569] [2021-08-21 12:30:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:30:59,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:30:59,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:30:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:30:59,586 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) [2021-08-21 12:31:00,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:00,886 INFO L93 Difference]: Finished difference Result 6358 states and 22098 transitions. [2021-08-21 12:31:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:31:00,886 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 [2021-08-21 12:31:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:00,949 INFO L225 Difference]: With dead ends: 6358 [2021-08-21 12:31:00,949 INFO L226 Difference]: Without dead ends: 6261 [2021-08-21 12:31:00,952 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 750.0ms TimeCoverageRelationStatistics Valid=172, Invalid=1634, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:31:00,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6261 states. [2021-08-21 12:31:01,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6261 to 5424. [2021-08-21 12:31:01,036 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) [2021-08-21 12:31:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 19005 transitions. [2021-08-21 12:31:01,050 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 19005 transitions. Word has length 47 [2021-08-21 12:31:01,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:01,050 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 19005 transitions. [2021-08-21 12:31:01,051 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) [2021-08-21 12:31:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 19005 transitions. [2021-08-21 12:31:01,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:01,060 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:01,060 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:01,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-21 12:31:01,060 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:01,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2110710335, now seen corresponding path program 42 times [2021-08-21 12:31:01,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:01,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595587572] [2021-08-21 12:31:01,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:01,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:01,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:01,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:01,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595587572] [2021-08-21 12:31:01,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595587572] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:01,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:01,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:01,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479556959] [2021-08-21 12:31:01,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:01,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:01,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:01,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:01,439 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) [2021-08-21 12:31:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:02,652 INFO L93 Difference]: Finished difference Result 6179 states and 21553 transitions. [2021-08-21 12:31:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:31:02,652 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 [2021-08-21 12:31:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:02,666 INFO L225 Difference]: With dead ends: 6179 [2021-08-21 12:31:02,666 INFO L226 Difference]: Without dead ends: 6046 [2021-08-21 12:31:02,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 708.1ms TimeCoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:31:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6046 states. [2021-08-21 12:31:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6046 to 5382. [2021-08-21 12:31:02,738 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) [2021-08-21 12:31:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 18880 transitions. [2021-08-21 12:31:02,749 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 18880 transitions. Word has length 47 [2021-08-21 12:31:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:02,749 INFO L470 AbstractCegarLoop]: Abstraction has 5382 states and 18880 transitions. [2021-08-21 12:31:02,749 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) [2021-08-21 12:31:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 18880 transitions. [2021-08-21 12:31:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:02,758 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:02,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:02,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-21 12:31:02,758 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:02,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:02,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1938513479, now seen corresponding path program 43 times [2021-08-21 12:31:02,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:02,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826372109] [2021-08-21 12:31:02,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:02,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:03,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:03,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826372109] [2021-08-21 12:31:03,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826372109] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:03,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:03,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:03,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980753402] [2021-08-21 12:31:03,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:03,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:03,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:03,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:03,090 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) [2021-08-21 12:31:04,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:04,598 INFO L93 Difference]: Finished difference Result 6474 states and 22562 transitions. [2021-08-21 12:31:04,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 12:31:04,598 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 [2021-08-21 12:31:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:04,611 INFO L225 Difference]: With dead ends: 6474 [2021-08-21 12:31:04,611 INFO L226 Difference]: Without dead ends: 6289 [2021-08-21 12:31:04,612 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 498 ImplicationChecksByTransitivity, 896.6ms TimeCoverageRelationStatistics Valid=220, Invalid=2132, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 12:31:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6289 states. [2021-08-21 12:31:04,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6289 to 5386. [2021-08-21 12:31:04,683 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) [2021-08-21 12:31:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5386 states to 5386 states and 18890 transitions. [2021-08-21 12:31:04,694 INFO L78 Accepts]: Start accepts. Automaton has 5386 states and 18890 transitions. Word has length 47 [2021-08-21 12:31:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:04,694 INFO L470 AbstractCegarLoop]: Abstraction has 5386 states and 18890 transitions. [2021-08-21 12:31:04,695 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) [2021-08-21 12:31:04,695 INFO L276 IsEmpty]: Start isEmpty. Operand 5386 states and 18890 transitions. [2021-08-21 12:31:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:04,703 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:04,703 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:04,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-08-21 12:31:04,703 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:04,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2056005221, now seen corresponding path program 44 times [2021-08-21 12:31:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:04,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047310772] [2021-08-21 12:31:04,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:04,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:05,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:05,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:05,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047310772] [2021-08-21 12:31:05,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047310772] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:05,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:05,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:05,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256827734] [2021-08-21 12:31:05,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:05,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:05,086 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) [2021-08-21 12:31:06,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:06,638 INFO L93 Difference]: Finished difference Result 6566 states and 22765 transitions. [2021-08-21 12:31:06,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 12:31:06,639 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 [2021-08-21 12:31:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:06,656 INFO L225 Difference]: With dead ends: 6566 [2021-08-21 12:31:06,656 INFO L226 Difference]: Without dead ends: 6429 [2021-08-21 12:31:06,656 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 975.9ms TimeCoverageRelationStatistics Valid=225, Invalid=2127, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 12:31:06,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6429 states. [2021-08-21 12:31:06,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6429 to 5392. [2021-08-21 12:31:06,749 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) [2021-08-21 12:31:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5392 states to 5392 states and 18903 transitions. [2021-08-21 12:31:06,763 INFO L78 Accepts]: Start accepts. Automaton has 5392 states and 18903 transitions. Word has length 47 [2021-08-21 12:31:06,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:06,763 INFO L470 AbstractCegarLoop]: Abstraction has 5392 states and 18903 transitions. [2021-08-21 12:31:06,763 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) [2021-08-21 12:31:06,764 INFO L276 IsEmpty]: Start isEmpty. Operand 5392 states and 18903 transitions. [2021-08-21 12:31:06,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:06,773 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:06,773 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:06,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-08-21 12:31:06,773 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:06,774 INFO L82 PathProgramCache]: Analyzing trace with hash -484583785, now seen corresponding path program 45 times [2021-08-21 12:31:06,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:06,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451371210] [2021-08-21 12:31:06,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:06,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:07,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:07,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451371210] [2021-08-21 12:31:07,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451371210] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:07,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:07,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:07,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976804221] [2021-08-21 12:31:07,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:07,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:07,145 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) [2021-08-21 12:31:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:09,609 INFO L93 Difference]: Finished difference Result 8647 states and 30313 transitions. [2021-08-21 12:31:09,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 12:31:09,610 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 [2021-08-21 12:31:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:09,630 INFO L225 Difference]: With dead ends: 8647 [2021-08-21 12:31:09,630 INFO L226 Difference]: Without dead ends: 8552 [2021-08-21 12:31:09,631 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 1256.9ms TimeCoverageRelationStatistics Valid=334, Invalid=3572, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 12:31:09,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2021-08-21 12:31:09,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 5390. [2021-08-21 12:31:09,730 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) [2021-08-21 12:31:09,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18904 transitions. [2021-08-21 12:31:09,744 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18904 transitions. Word has length 47 [2021-08-21 12:31:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:09,745 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18904 transitions. [2021-08-21 12:31:09,745 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) [2021-08-21 12:31:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18904 transitions. [2021-08-21 12:31:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:09,754 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:09,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:09,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-08-21 12:31:09,755 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:09,755 INFO L82 PathProgramCache]: Analyzing trace with hash -185692107, now seen corresponding path program 46 times [2021-08-21 12:31:09,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:09,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520088250] [2021-08-21 12:31:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:09,755 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:10,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:10,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520088250] [2021-08-21 12:31:10,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520088250] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:10,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:10,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:10,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121400845] [2021-08-21 12:31:10,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:10,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:10,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:10,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:10,097 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) [2021-08-21 12:31:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:11,436 INFO L93 Difference]: Finished difference Result 6515 states and 22598 transitions. [2021-08-21 12:31:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:31:11,437 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 [2021-08-21 12:31:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:11,451 INFO L225 Difference]: With dead ends: 6515 [2021-08-21 12:31:11,451 INFO L226 Difference]: Without dead ends: 6418 [2021-08-21 12:31:11,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 873.7ms TimeCoverageRelationStatistics Valid=209, Invalid=1953, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:31:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2021-08-21 12:31:11,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 5398. [2021-08-21 12:31:11,524 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) [2021-08-21 12:31:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 18922 transitions. [2021-08-21 12:31:11,535 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 18922 transitions. Word has length 47 [2021-08-21 12:31:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:11,535 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 18922 transitions. [2021-08-21 12:31:11,536 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) [2021-08-21 12:31:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 18922 transitions. [2021-08-21 12:31:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:11,543 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:11,544 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:11,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-08-21 12:31:11,544 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:11,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:11,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1911112617, now seen corresponding path program 47 times [2021-08-21 12:31:11,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:11,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800650935] [2021-08-21 12:31:11,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:11,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:11,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:11,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800650935] [2021-08-21 12:31:11,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800650935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:11,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:11,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:11,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583703375] [2021-08-21 12:31:11,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:11,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:11,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:11,881 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) [2021-08-21 12:31:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:13,140 INFO L93 Difference]: Finished difference Result 6336 states and 22053 transitions. [2021-08-21 12:31:13,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:31:13,140 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 [2021-08-21 12:31:13,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:13,154 INFO L225 Difference]: With dead ends: 6336 [2021-08-21 12:31:13,154 INFO L226 Difference]: Without dead ends: 6237 [2021-08-21 12:31:13,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 773.3ms TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:31:13,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2021-08-21 12:31:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 5390. [2021-08-21 12:31:13,299 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) [2021-08-21 12:31:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 18902 transitions. [2021-08-21 12:31:13,310 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 18902 transitions. Word has length 47 [2021-08-21 12:31:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:13,310 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 18902 transitions. [2021-08-21 12:31:13,310 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) [2021-08-21 12:31:13,311 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 18902 transitions. [2021-08-21 12:31:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:13,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:13,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:13,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-08-21 12:31:13,318 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:13,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:13,319 INFO L82 PathProgramCache]: Analyzing trace with hash -835368053, now seen corresponding path program 48 times [2021-08-21 12:31:13,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:13,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735147725] [2021-08-21 12:31:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:13,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:13,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:13,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735147725] [2021-08-21 12:31:13,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735147725] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:13,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:13,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:31:13,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232307243] [2021-08-21 12:31:13,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:31:13,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:13,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:31:13,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:31:13,653 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) [2021-08-21 12:31:14,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:14,909 INFO L93 Difference]: Finished difference Result 6321 states and 22036 transitions. [2021-08-21 12:31:14,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:31:14,909 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 [2021-08-21 12:31:14,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:14,923 INFO L225 Difference]: With dead ends: 6321 [2021-08-21 12:31:14,924 INFO L226 Difference]: Without dead ends: 6176 [2021-08-21 12:31:14,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 751.4ms TimeCoverageRelationStatistics Valid=166, Invalid=1474, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:31:14,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6176 states. [2021-08-21 12:31:14,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6176 to 5402. [2021-08-21 12:31:15,000 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) [2021-08-21 12:31:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5402 states to 5402 states and 18932 transitions. [2021-08-21 12:31:15,014 INFO L78 Accepts]: Start accepts. Automaton has 5402 states and 18932 transitions. Word has length 47 [2021-08-21 12:31:15,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:15,014 INFO L470 AbstractCegarLoop]: Abstraction has 5402 states and 18932 transitions. [2021-08-21 12:31:15,014 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) [2021-08-21 12:31:15,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5402 states and 18932 transitions. [2021-08-21 12:31:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:15,024 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:15,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:15,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-08-21 12:31:15,024 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:15,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1516146537, now seen corresponding path program 49 times [2021-08-21 12:31:15,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:15,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351403372] [2021-08-21 12:31:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:15,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:15,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:15,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351403372] [2021-08-21 12:31:15,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351403372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:15,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:15,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:15,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764846863] [2021-08-21 12:31:15,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:15,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:15,358 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) [2021-08-21 12:31:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:16,749 INFO L93 Difference]: Finished difference Result 6342 states and 22040 transitions. [2021-08-21 12:31:16,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:31:16,750 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 [2021-08-21 12:31:16,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:16,762 INFO L225 Difference]: With dead ends: 6342 [2021-08-21 12:31:16,762 INFO L226 Difference]: Without dead ends: 6245 [2021-08-21 12:31:16,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 846.1ms TimeCoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:31:16,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2021-08-21 12:31:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5408. [2021-08-21 12:31:16,831 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) [2021-08-21 12:31:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5408 states to 5408 states and 18947 transitions. [2021-08-21 12:31:16,846 INFO L78 Accepts]: Start accepts. Automaton has 5408 states and 18947 transitions. Word has length 47 [2021-08-21 12:31:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:16,847 INFO L470 AbstractCegarLoop]: Abstraction has 5408 states and 18947 transitions. [2021-08-21 12:31:16,847 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) [2021-08-21 12:31:16,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5408 states and 18947 transitions. [2021-08-21 12:31:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:16,856 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:16,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:16,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-08-21 12:31:16,856 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:16,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:16,857 INFO L82 PathProgramCache]: Analyzing trace with hash -209273973, now seen corresponding path program 50 times [2021-08-21 12:31:16,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:16,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536371896] [2021-08-21 12:31:16,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:16,857 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:17,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:17,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:17,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536371896] [2021-08-21 12:31:17,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536371896] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:17,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:17,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:17,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902169365] [2021-08-21 12:31:17,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:17,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:17,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:17,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:17,201 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) [2021-08-21 12:31:18,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:18,372 INFO L93 Difference]: Finished difference Result 6163 states and 21495 transitions. [2021-08-21 12:31:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:31:18,373 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 [2021-08-21 12:31:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:18,386 INFO L225 Difference]: With dead ends: 6163 [2021-08-21 12:31:18,386 INFO L226 Difference]: Without dead ends: 6042 [2021-08-21 12:31:18,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 691.1ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:31:18,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6042 states. [2021-08-21 12:31:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6042 to 5378. [2021-08-21 12:31:18,455 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) [2021-08-21 12:31:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 18870 transitions. [2021-08-21 12:31:18,467 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 18870 transitions. Word has length 47 [2021-08-21 12:31:18,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:18,467 INFO L470 AbstractCegarLoop]: Abstraction has 5378 states and 18870 transitions. [2021-08-21 12:31:18,467 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) [2021-08-21 12:31:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 18870 transitions. [2021-08-21 12:31:18,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:18,476 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:18,476 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:18,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-08-21 12:31:18,476 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash -163058067, now seen corresponding path program 51 times [2021-08-21 12:31:18,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:18,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270878559] [2021-08-21 12:31:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:18,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:18,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:18,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270878559] [2021-08-21 12:31:18,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270878559] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:18,770 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:18,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:31:18,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553000663] [2021-08-21 12:31:18,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:31:18,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:18,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:31:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:31:18,771 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) [2021-08-21 12:31:19,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:19,948 INFO L93 Difference]: Finished difference Result 6353 states and 22148 transitions. [2021-08-21 12:31:19,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:31:19,948 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 [2021-08-21 12:31:19,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:19,963 INFO L225 Difference]: With dead ends: 6353 [2021-08-21 12:31:19,963 INFO L226 Difference]: Without dead ends: 6216 [2021-08-21 12:31:19,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 640.4ms TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:31:19,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6216 states. [2021-08-21 12:31:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6216 to 5458. [2021-08-21 12:31:20,047 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) [2021-08-21 12:31:20,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19140 transitions. [2021-08-21 12:31:20,062 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19140 transitions. Word has length 47 [2021-08-21 12:31:20,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:20,063 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 19140 transitions. [2021-08-21 12:31:20,063 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) [2021-08-21 12:31:20,063 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19140 transitions. [2021-08-21 12:31:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:20,073 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:20,073 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:20,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-08-21 12:31:20,073 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:20,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:20,073 INFO L82 PathProgramCache]: Analyzing trace with hash -971998675, now seen corresponding path program 52 times [2021-08-21 12:31:20,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:20,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434387906] [2021-08-21 12:31:20,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:20,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:20,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:20,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:20,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434387906] [2021-08-21 12:31:20,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434387906] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:20,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:31:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007467081] [2021-08-21 12:31:20,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:31:20,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:31:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:31:20,390 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) [2021-08-21 12:31:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:21,676 INFO L93 Difference]: Finished difference Result 6337 states and 22092 transitions. [2021-08-21 12:31:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:31:21,676 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 [2021-08-21 12:31:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:21,691 INFO L225 Difference]: With dead ends: 6337 [2021-08-21 12:31:21,691 INFO L226 Difference]: Without dead ends: 6192 [2021-08-21 12:31:21,691 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 732.8ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:31:21,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6192 states. [2021-08-21 12:31:21,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6192 to 5458. [2021-08-21 12:31:21,774 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) [2021-08-21 12:31:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 19116 transitions. [2021-08-21 12:31:21,790 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 19116 transitions. Word has length 47 [2021-08-21 12:31:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:21,790 INFO L470 AbstractCegarLoop]: Abstraction has 5458 states and 19116 transitions. [2021-08-21 12:31:21,790 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) [2021-08-21 12:31:21,790 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 19116 transitions. [2021-08-21 12:31:21,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:21,799 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:21,799 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:21,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-08-21 12:31:21,799 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:21,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:21,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1245654035, now seen corresponding path program 53 times [2021-08-21 12:31:21,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:21,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005509777] [2021-08-21 12:31:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:21,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:22,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:22,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005509777] [2021-08-21 12:31:22,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005509777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:22,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:22,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:31:22,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627478414] [2021-08-21 12:31:22,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:31:22,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:22,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:31:22,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:31:22,117 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) [2021-08-21 12:31:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:23,388 INFO L93 Difference]: Finished difference Result 6385 states and 22268 transitions. [2021-08-21 12:31:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:31:23,388 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 [2021-08-21 12:31:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:23,402 INFO L225 Difference]: With dead ends: 6385 [2021-08-21 12:31:23,402 INFO L226 Difference]: Without dead ends: 6136 [2021-08-21 12:31:23,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 769.6ms TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:31:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-08-21 12:31:23,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5394. [2021-08-21 12:31:23,476 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) [2021-08-21 12:31:23,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5394 states to 5394 states and 18908 transitions. [2021-08-21 12:31:23,487 INFO L78 Accepts]: Start accepts. Automaton has 5394 states and 18908 transitions. Word has length 47 [2021-08-21 12:31:23,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:23,487 INFO L470 AbstractCegarLoop]: Abstraction has 5394 states and 18908 transitions. [2021-08-21 12:31:23,488 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) [2021-08-21 12:31:23,488 INFO L276 IsEmpty]: Start isEmpty. Operand 5394 states and 18908 transitions. [2021-08-21 12:31:23,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:23,495 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:23,496 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:23,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-08-21 12:31:23,496 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash 489665227, now seen corresponding path program 54 times [2021-08-21 12:31:23,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:23,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435938719] [2021-08-21 12:31:23,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:23,496 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:23,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:23,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435938719] [2021-08-21 12:31:23,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435938719] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:23,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:23,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:31:23,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726643971] [2021-08-21 12:31:23,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:31:23,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:23,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:31:23,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:31:23,821 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) [2021-08-21 12:31:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:25,098 INFO L93 Difference]: Finished difference Result 6273 states and 21852 transitions. [2021-08-21 12:31:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:31:25,099 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 [2021-08-21 12:31:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:25,112 INFO L225 Difference]: With dead ends: 6273 [2021-08-21 12:31:25,112 INFO L226 Difference]: Without dead ends: 6136 [2021-08-21 12:31:25,113 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 723.5ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:31:25,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2021-08-21 12:31:25,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 5412. [2021-08-21 12:31:25,184 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) [2021-08-21 12:31:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18953 transitions. [2021-08-21 12:31:25,195 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18953 transitions. Word has length 47 [2021-08-21 12:31:25,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:25,195 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 18953 transitions. [2021-08-21 12:31:25,195 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) [2021-08-21 12:31:25,195 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18953 transitions. [2021-08-21 12:31:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:25,203 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:25,204 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:25,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-08-21 12:31:25,204 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:25,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:25,204 INFO L82 PathProgramCache]: Analyzing trace with hash -319275381, now seen corresponding path program 55 times [2021-08-21 12:31:25,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:25,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213633054] [2021-08-21 12:31:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:25,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:25,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:25,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:25,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213633054] [2021-08-21 12:31:25,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213633054] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:25,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:25,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:25,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581319348] [2021-08-21 12:31:25,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:25,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:25,590 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) [2021-08-21 12:31:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:26,982 INFO L93 Difference]: Finished difference Result 6257 states and 21784 transitions. [2021-08-21 12:31:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:31:26,982 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 [2021-08-21 12:31:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:26,995 INFO L225 Difference]: With dead ends: 6257 [2021-08-21 12:31:26,995 INFO L226 Difference]: Without dead ends: 6112 [2021-08-21 12:31:26,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 795.9ms TimeCoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:31:27,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6112 states. [2021-08-21 12:31:27,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6112 to 5412. [2021-08-21 12:31:27,063 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) [2021-08-21 12:31:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 18947 transitions. [2021-08-21 12:31:27,075 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 18947 transitions. Word has length 47 [2021-08-21 12:31:27,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:27,075 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 18947 transitions. [2021-08-21 12:31:27,076 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) [2021-08-21 12:31:27,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 18947 transitions. [2021-08-21 12:31:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:27,084 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:27,084 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:27,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-08-21 12:31:27,084 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:27,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:27,084 INFO L82 PathProgramCache]: Analyzing trace with hash 580620397, now seen corresponding path program 56 times [2021-08-21 12:31:27,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:27,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836010447] [2021-08-21 12:31:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:27,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:27,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:27,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836010447] [2021-08-21 12:31:27,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836010447] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:27,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:27,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:27,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465833025] [2021-08-21 12:31:27,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:27,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:27,427 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) [2021-08-21 12:31:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:30,591 INFO L93 Difference]: Finished difference Result 9782 states and 34633 transitions. [2021-08-21 12:31:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 12:31:30,592 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 [2021-08-21 12:31:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:30,614 INFO L225 Difference]: With dead ends: 9782 [2021-08-21 12:31:30,614 INFO L226 Difference]: Without dead ends: 9645 [2021-08-21 12:31:30,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1742.9ms TimeCoverageRelationStatistics Valid=418, Invalid=3872, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 12:31:30,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9645 states. [2021-08-21 12:31:30,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9645 to 5502. [2021-08-21 12:31:30,709 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) [2021-08-21 12:31:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 19246 transitions. [2021-08-21 12:31:30,720 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 19246 transitions. Word has length 47 [2021-08-21 12:31:30,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:30,721 INFO L470 AbstractCegarLoop]: Abstraction has 5502 states and 19246 transitions. [2021-08-21 12:31:30,721 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) [2021-08-21 12:31:30,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 19246 transitions. [2021-08-21 12:31:30,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:30,729 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:30,729 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:30,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-08-21 12:31:30,729 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:30,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:30,729 INFO L82 PathProgramCache]: Analyzing trace with hash -270031511, now seen corresponding path program 57 times [2021-08-21 12:31:30,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:30,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820294878] [2021-08-21 12:31:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:30,729 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:31,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:31,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820294878] [2021-08-21 12:31:31,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820294878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:31,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:31,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:31,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653891608] [2021-08-21 12:31:31,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:31,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:31,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:31,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:31,064 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) [2021-08-21 12:31:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:34,351 INFO L93 Difference]: Finished difference Result 10309 states and 36819 transitions. [2021-08-21 12:31:34,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-08-21 12:31:34,351 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 [2021-08-21 12:31:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:34,375 INFO L225 Difference]: With dead ends: 10309 [2021-08-21 12:31:34,375 INFO L226 Difference]: Without dead ends: 10202 [2021-08-21 12:31:34,376 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 1800.5ms TimeCoverageRelationStatistics Valid=441, Invalid=4529, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 12:31:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10202 states. [2021-08-21 12:31:34,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10202 to 5480. [2021-08-21 12:31:34,478 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) [2021-08-21 12:31:34,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5480 states to 5480 states and 19187 transitions. [2021-08-21 12:31:34,489 INFO L78 Accepts]: Start accepts. Automaton has 5480 states and 19187 transitions. Word has length 47 [2021-08-21 12:31:34,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:34,490 INFO L470 AbstractCegarLoop]: Abstraction has 5480 states and 19187 transitions. [2021-08-21 12:31:34,490 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) [2021-08-21 12:31:34,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5480 states and 19187 transitions. [2021-08-21 12:31:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:34,498 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:34,498 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:34,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-08-21 12:31:34,498 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:34,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:34,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1410569935, now seen corresponding path program 58 times [2021-08-21 12:31:34,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:34,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349417312] [2021-08-21 12:31:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:34,499 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:34,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:34,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349417312] [2021-08-21 12:31:34,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349417312] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:34,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:34,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:34,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423995584] [2021-08-21 12:31:34,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:34,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:34,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:34,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:34,840 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) [2021-08-21 12:31:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:36,386 INFO L93 Difference]: Finished difference Result 6505 states and 22565 transitions. [2021-08-21 12:31:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 12:31:36,387 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 [2021-08-21 12:31:36,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:36,400 INFO L225 Difference]: With dead ends: 6505 [2021-08-21 12:31:36,400 INFO L226 Difference]: Without dead ends: 6384 [2021-08-21 12:31:36,401 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 895.1ms TimeCoverageRelationStatistics Valid=203, Invalid=1959, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:31:36,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6384 states. [2021-08-21 12:31:36,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6384 to 5486. [2021-08-21 12:31:36,472 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) [2021-08-21 12:31:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 19200 transitions. [2021-08-21 12:31:36,483 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 19200 transitions. Word has length 47 [2021-08-21 12:31:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:36,484 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 19200 transitions. [2021-08-21 12:31:36,484 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) [2021-08-21 12:31:36,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 19200 transitions. [2021-08-21 12:31:36,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:36,492 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:36,492 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:36,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-08-21 12:31:36,492 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:36,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:36,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1312975925, now seen corresponding path program 59 times [2021-08-21 12:31:36,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:36,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682831979] [2021-08-21 12:31:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:36,493 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:36,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:36,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:36,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682831979] [2021-08-21 12:31:36,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682831979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:36,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:36,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:36,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286760385] [2021-08-21 12:31:36,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:36,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:36,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:36,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:36,841 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) [2021-08-21 12:31:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:38,907 INFO L93 Difference]: Finished difference Result 7233 states and 25257 transitions. [2021-08-21 12:31:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-08-21 12:31:38,907 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 [2021-08-21 12:31:38,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:38,923 INFO L225 Difference]: With dead ends: 7233 [2021-08-21 12:31:38,923 INFO L226 Difference]: Without dead ends: 6989 [2021-08-21 12:31:38,924 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1112.2ms TimeCoverageRelationStatistics Valid=256, Invalid=2606, Unknown=0, NotChecked=0, Total=2862 [2021-08-21 12:31:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2021-08-21 12:31:38,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 5554. [2021-08-21 12:31:39,000 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) [2021-08-21 12:31:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19424 transitions. [2021-08-21 12:31:39,012 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19424 transitions. Word has length 47 [2021-08-21 12:31:39,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:39,024 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 19424 transitions. [2021-08-21 12:31:39,024 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) [2021-08-21 12:31:39,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19424 transitions. [2021-08-21 12:31:39,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:39,033 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:39,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:39,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-08-21 12:31:39,034 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1014084247, now seen corresponding path program 60 times [2021-08-21 12:31:39,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:39,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730697488] [2021-08-21 12:31:39,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:39,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:39,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:39,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:39,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730697488] [2021-08-21 12:31:39,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730697488] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:39,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:39,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:39,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488387076] [2021-08-21 12:31:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:39,394 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) [2021-08-21 12:31:40,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:40,807 INFO L93 Difference]: Finished difference Result 6522 states and 22604 transitions. [2021-08-21 12:31:40,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:31:40,807 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 [2021-08-21 12:31:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:40,821 INFO L225 Difference]: With dead ends: 6522 [2021-08-21 12:31:40,821 INFO L226 Difference]: Without dead ends: 6425 [2021-08-21 12:31:40,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 866.0ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:31:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6425 states. [2021-08-21 12:31:40,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6425 to 5568. [2021-08-21 12:31:40,898 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) [2021-08-21 12:31:40,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5568 states to 5568 states and 19451 transitions. [2021-08-21 12:31:40,911 INFO L78 Accepts]: Start accepts. Automaton has 5568 states and 19451 transitions. Word has length 47 [2021-08-21 12:31:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:40,911 INFO L470 AbstractCegarLoop]: Abstraction has 5568 states and 19451 transitions. [2021-08-21 12:31:40,911 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) [2021-08-21 12:31:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5568 states and 19451 transitions. [2021-08-21 12:31:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:40,919 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:40,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:40,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-08-21 12:31:40,920 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:40,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1555462539, now seen corresponding path program 61 times [2021-08-21 12:31:40,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:40,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521632058] [2021-08-21 12:31:40,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:40,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:41,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:41,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521632058] [2021-08-21 12:31:41,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521632058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:41,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:41,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:41,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562520085] [2021-08-21 12:31:41,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:41,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:41,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:41,222 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) [2021-08-21 12:31:42,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:42,487 INFO L93 Difference]: Finished difference Result 6343 states and 22059 transitions. [2021-08-21 12:31:42,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:31:42,488 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 [2021-08-21 12:31:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:42,501 INFO L225 Difference]: With dead ends: 6343 [2021-08-21 12:31:42,502 INFO L226 Difference]: Without dead ends: 6238 [2021-08-21 12:31:42,502 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 689.2ms TimeCoverageRelationStatistics Valid=162, Invalid=1560, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:31:42,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6238 states. [2021-08-21 12:31:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6238 to 5554. [2021-08-21 12:31:42,575 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) [2021-08-21 12:31:42,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 19418 transitions. [2021-08-21 12:31:42,586 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 19418 transitions. Word has length 47 [2021-08-21 12:31:42,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:42,586 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 19418 transitions. [2021-08-21 12:31:42,586 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) [2021-08-21 12:31:42,586 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 19418 transitions. [2021-08-21 12:31:42,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:42,594 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:42,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:42,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-08-21 12:31:42,594 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:42,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:42,595 INFO L82 PathProgramCache]: Analyzing trace with hash 800866843, now seen corresponding path program 62 times [2021-08-21 12:31:42,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:42,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229415924] [2021-08-21 12:31:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:42,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:42,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:42,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229415924] [2021-08-21 12:31:42,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229415924] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:42,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:42,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:42,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822664826] [2021-08-21 12:31:42,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:42,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:42,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:42,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:42,926 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) [2021-08-21 12:31:44,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:44,397 INFO L93 Difference]: Finished difference Result 6616 states and 22995 transitions. [2021-08-21 12:31:44,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:31:44,397 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 [2021-08-21 12:31:44,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:44,411 INFO L225 Difference]: With dead ends: 6616 [2021-08-21 12:31:44,411 INFO L226 Difference]: Without dead ends: 6431 [2021-08-21 12:31:44,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 879.4ms TimeCoverageRelationStatistics Valid=200, Invalid=1870, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:31:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2021-08-21 12:31:44,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 5558. [2021-08-21 12:31:44,483 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) [2021-08-21 12:31:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5558 states to 5558 states and 19428 transitions. [2021-08-21 12:31:44,495 INFO L78 Accepts]: Start accepts. Automaton has 5558 states and 19428 transitions. Word has length 47 [2021-08-21 12:31:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:44,495 INFO L470 AbstractCegarLoop]: Abstraction has 5558 states and 19428 transitions. [2021-08-21 12:31:44,496 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) [2021-08-21 12:31:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5558 states and 19428 transitions. [2021-08-21 12:31:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:44,505 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:44,505 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:44,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-08-21 12:31:44,505 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:44,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:44,505 INFO L82 PathProgramCache]: Analyzing trace with hash 683375101, now seen corresponding path program 63 times [2021-08-21 12:31:44,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:44,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201064014] [2021-08-21 12:31:44,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:44,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:44,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:44,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201064014] [2021-08-21 12:31:44,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201064014] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:44,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:44,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:44,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299493351] [2021-08-21 12:31:44,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:44,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:44,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:44,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:44,885 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) [2021-08-21 12:31:46,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:46,332 INFO L93 Difference]: Finished difference Result 6708 states and 23198 transitions. [2021-08-21 12:31:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 12:31:46,333 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 [2021-08-21 12:31:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:46,346 INFO L225 Difference]: With dead ends: 6708 [2021-08-21 12:31:46,347 INFO L226 Difference]: Without dead ends: 6571 [2021-08-21 12:31:46,347 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 927.7ms TimeCoverageRelationStatistics Valid=204, Invalid=1866, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:31:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6571 states. [2021-08-21 12:31:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6571 to 5564. [2021-08-21 12:31:46,418 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) [2021-08-21 12:31:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5564 states to 5564 states and 19441 transitions. [2021-08-21 12:31:46,430 INFO L78 Accepts]: Start accepts. Automaton has 5564 states and 19441 transitions. Word has length 47 [2021-08-21 12:31:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:46,430 INFO L470 AbstractCegarLoop]: Abstraction has 5564 states and 19441 transitions. [2021-08-21 12:31:46,430 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) [2021-08-21 12:31:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5564 states and 19441 transitions. [2021-08-21 12:31:46,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:46,438 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:46,438 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:46,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-08-21 12:31:46,438 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:46,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:46,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2040170759, now seen corresponding path program 64 times [2021-08-21 12:31:46,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:46,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679520366] [2021-08-21 12:31:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:46,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:46,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:46,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:46,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679520366] [2021-08-21 12:31:46,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679520366] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:46,777 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:46,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:46,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589662094] [2021-08-21 12:31:46,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:46,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:46,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:46,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:46,777 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) [2021-08-21 12:31:49,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:49,586 INFO L93 Difference]: Finished difference Result 9630 states and 33745 transitions. [2021-08-21 12:31:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 12:31:49,587 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 [2021-08-21 12:31:49,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:49,608 INFO L225 Difference]: With dead ends: 9630 [2021-08-21 12:31:49,608 INFO L226 Difference]: Without dead ends: 9390 [2021-08-21 12:31:49,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1011 ImplicationChecksByTransitivity, 1371.6ms TimeCoverageRelationStatistics Valid=339, Invalid=3567, Unknown=0, NotChecked=0, Total=3906 [2021-08-21 12:31:49,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2021-08-21 12:31:49,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 5588. [2021-08-21 12:31:49,712 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) [2021-08-21 12:31:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19509 transitions. [2021-08-21 12:31:49,727 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19509 transitions. Word has length 47 [2021-08-21 12:31:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:49,727 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 19509 transitions. [2021-08-21 12:31:49,727 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) [2021-08-21 12:31:49,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19509 transitions. [2021-08-21 12:31:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:49,736 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:49,736 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:49,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-08-21 12:31:49,737 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:49,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:49,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1741279081, now seen corresponding path program 65 times [2021-08-21 12:31:49,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:49,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896851080] [2021-08-21 12:31:49,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:49,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:50,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:50,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896851080] [2021-08-21 12:31:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896851080] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:50,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547762332] [2021-08-21 12:31:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:50,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:50,077 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) [2021-08-21 12:31:51,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:51,550 INFO L93 Difference]: Finished difference Result 6683 states and 23098 transitions. [2021-08-21 12:31:51,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:31:51,551 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 [2021-08-21 12:31:51,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:51,564 INFO L225 Difference]: With dead ends: 6683 [2021-08-21 12:31:51,564 INFO L226 Difference]: Without dead ends: 6586 [2021-08-21 12:31:51,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 924.1ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:31:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6586 states. [2021-08-21 12:31:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6586 to 5596. [2021-08-21 12:31:51,635 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) [2021-08-21 12:31:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 19527 transitions. [2021-08-21 12:31:51,649 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 19527 transitions. Word has length 47 [2021-08-21 12:31:51,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:51,649 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 19527 transitions. [2021-08-21 12:31:51,649 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) [2021-08-21 12:31:51,649 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 19527 transitions. [2021-08-21 12:31:51,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:51,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:51,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:51,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-08-21 12:31:51,658 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:51,658 INFO L82 PathProgramCache]: Analyzing trace with hash 828267705, now seen corresponding path program 66 times [2021-08-21 12:31:51,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:51,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697298311] [2021-08-21 12:31:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:51,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:52,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:52,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:52,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697298311] [2021-08-21 12:31:52,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697298311] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:52,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:52,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:52,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812317155] [2021-08-21 12:31:52,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:52,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:52,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:52,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:52,031 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) [2021-08-21 12:31:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:53,242 INFO L93 Difference]: Finished difference Result 6504 states and 22553 transitions. [2021-08-21 12:31:53,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:31:53,243 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 [2021-08-21 12:31:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:53,256 INFO L225 Difference]: With dead ends: 6504 [2021-08-21 12:31:53,256 INFO L226 Difference]: Without dead ends: 6405 [2021-08-21 12:31:53,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 738.6ms TimeCoverageRelationStatistics Valid=156, Invalid=1404, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:31:53,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-08-21 12:31:53,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5588. [2021-08-21 12:31:53,329 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) [2021-08-21 12:31:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 19507 transitions. [2021-08-21 12:31:53,342 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 19507 transitions. Word has length 47 [2021-08-21 12:31:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:53,342 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 19507 transitions. [2021-08-21 12:31:53,342 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) [2021-08-21 12:31:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 19507 transitions. [2021-08-21 12:31:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:53,350 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:53,350 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:53,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-08-21 12:31:53,350 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:53,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1904012269, now seen corresponding path program 67 times [2021-08-21 12:31:53,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:53,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858625776] [2021-08-21 12:31:53,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:53,351 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:53,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:53,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:53,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858625776] [2021-08-21 12:31:53,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858625776] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:53,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:53,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:31:53,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564928946] [2021-08-21 12:31:53,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:31:53,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:53,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:31:53,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:31:53,678 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) [2021-08-21 12:31:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:54,866 INFO L93 Difference]: Finished difference Result 6489 states and 22536 transitions. [2021-08-21 12:31:54,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:31:54,866 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 [2021-08-21 12:31:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:54,879 INFO L225 Difference]: With dead ends: 6489 [2021-08-21 12:31:54,879 INFO L226 Difference]: Without dead ends: 6344 [2021-08-21 12:31:54,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 697.8ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:31:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6344 states. [2021-08-21 12:31:54,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6344 to 5600. [2021-08-21 12:31:54,954 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) [2021-08-21 12:31:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19537 transitions. [2021-08-21 12:31:54,969 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19537 transitions. Word has length 47 [2021-08-21 12:31:54,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:54,970 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 19537 transitions. [2021-08-21 12:31:54,970 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) [2021-08-21 12:31:54,970 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19537 transitions. [2021-08-21 12:31:54,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:54,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:54,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:54,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-08-21 12:31:54,978 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:54,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:54,978 INFO L82 PathProgramCache]: Analyzing trace with hash -39440437, now seen corresponding path program 68 times [2021-08-21 12:31:54,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:54,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349668953] [2021-08-21 12:31:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:54,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:55,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:55,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349668953] [2021-08-21 12:31:55,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349668953] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:55,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:55,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:55,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525166808] [2021-08-21 12:31:55,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:55,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:55,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:55,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:55,316 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) [2021-08-21 12:31:56,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:56,556 INFO L93 Difference]: Finished difference Result 6510 states and 22540 transitions. [2021-08-21 12:31:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:31:56,556 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 [2021-08-21 12:31:56,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:56,570 INFO L225 Difference]: With dead ends: 6510 [2021-08-21 12:31:56,570 INFO L226 Difference]: Without dead ends: 6413 [2021-08-21 12:31:56,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 749.5ms TimeCoverageRelationStatistics Valid=161, Invalid=1479, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:31:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6413 states. [2021-08-21 12:31:56,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6413 to 5606. [2021-08-21 12:31:56,643 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) [2021-08-21 12:31:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5606 states to 5606 states and 19552 transitions. [2021-08-21 12:31:56,655 INFO L78 Accepts]: Start accepts. Automaton has 5606 states and 19552 transitions. Word has length 47 [2021-08-21 12:31:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:56,655 INFO L470 AbstractCegarLoop]: Abstraction has 5606 states and 19552 transitions. [2021-08-21 12:31:56,655 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) [2021-08-21 12:31:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 5606 states and 19552 transitions. [2021-08-21 12:31:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:56,663 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:56,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:56,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-08-21 12:31:56,664 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1764860947, now seen corresponding path program 69 times [2021-08-21 12:31:56,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:56,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234461249] [2021-08-21 12:31:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:56,664 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:56,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:56,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:56,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234461249] [2021-08-21 12:31:56,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234461249] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:56,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:56,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:31:56,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929822545] [2021-08-21 12:31:56,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:31:56,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:56,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:31:56,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:31:56,991 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) [2021-08-21 12:31:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:58,107 INFO L93 Difference]: Finished difference Result 6331 states and 21995 transitions. [2021-08-21 12:31:58,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 12:31:58,107 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 [2021-08-21 12:31:58,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:58,121 INFO L225 Difference]: With dead ends: 6331 [2021-08-21 12:31:58,121 INFO L226 Difference]: Without dead ends: 6170 [2021-08-21 12:31:58,122 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 648.3ms TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:31:58,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2021-08-21 12:31:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 5536. [2021-08-21 12:31:58,198 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) [2021-08-21 12:31:58,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 19371 transitions. [2021-08-21 12:31:58,213 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 19371 transitions. Word has length 47 [2021-08-21 12:31:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 5536 states and 19371 transitions. [2021-08-21 12:31:58,214 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) [2021-08-21 12:31:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 19371 transitions. [2021-08-21 12:31:58,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:58,222 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:58,222 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:58,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-08-21 12:31:58,223 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:58,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:58,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1533599137, now seen corresponding path program 70 times [2021-08-21 12:31:58,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:58,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497957352] [2021-08-21 12:31:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:58,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:58,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:31:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:31:58,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:31:58,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497957352] [2021-08-21 12:31:58,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497957352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:31:58,521 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:31:58,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:31:58,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023589831] [2021-08-21 12:31:58,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:31:58,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:31:58,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:31:58,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:31:58,522 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) [2021-08-21 12:31:59,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:31:59,659 INFO L93 Difference]: Finished difference Result 6663 states and 23163 transitions. [2021-08-21 12:31:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:31:59,659 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 [2021-08-21 12:31:59,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:31:59,672 INFO L225 Difference]: With dead ends: 6663 [2021-08-21 12:31:59,673 INFO L226 Difference]: Without dead ends: 6526 [2021-08-21 12:31:59,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 682.0ms TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:31:59,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6526 states. [2021-08-21 12:31:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6526 to 5556. [2021-08-21 12:31:59,745 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) [2021-08-21 12:31:59,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 19437 transitions. [2021-08-21 12:31:59,757 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 19437 transitions. Word has length 47 [2021-08-21 12:31:59,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:31:59,757 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 19437 transitions. [2021-08-21 12:31:59,757 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) [2021-08-21 12:31:59,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 19437 transitions. [2021-08-21 12:31:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:31:59,765 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:31:59,765 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:31:59,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-08-21 12:31:59,765 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:31:59,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:31:59,765 INFO L82 PathProgramCache]: Analyzing trace with hash -15902915, now seen corresponding path program 71 times [2021-08-21 12:31:59,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:31:59,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592423178] [2021-08-21 12:31:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:31:59,765 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:31:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:00,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:00,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592423178] [2021-08-21 12:32:00,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592423178] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:00,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:00,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:00,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814790017] [2021-08-21 12:32:00,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:00,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:00,092 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) [2021-08-21 12:32:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:01,370 INFO L93 Difference]: Finished difference Result 6722 states and 23322 transitions. [2021-08-21 12:32:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:32:01,371 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 [2021-08-21 12:32:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:01,384 INFO L225 Difference]: With dead ends: 6722 [2021-08-21 12:32:01,385 INFO L226 Difference]: Without dead ends: 6633 [2021-08-21 12:32:01,385 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 770.1ms TimeCoverageRelationStatistics Valid=182, Invalid=1624, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:32:01,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-08-21 12:32:01,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5652. [2021-08-21 12:32:01,459 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) [2021-08-21 12:32:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 19733 transitions. [2021-08-21 12:32:01,470 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 19733 transitions. Word has length 47 [2021-08-21 12:32:01,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:01,471 INFO L470 AbstractCegarLoop]: Abstraction has 5652 states and 19733 transitions. [2021-08-21 12:32:01,471 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) [2021-08-21 12:32:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 19733 transitions. [2021-08-21 12:32:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:01,479 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:01,479 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:01,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-08-21 12:32:01,479 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash 418126431, now seen corresponding path program 72 times [2021-08-21 12:32:01,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:01,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727474476] [2021-08-21 12:32:01,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:01,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:01,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:01,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727474476] [2021-08-21 12:32:01,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727474476] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:01,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:01,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:01,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775515288] [2021-08-21 12:32:01,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:01,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:01,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:01,787 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) [2021-08-21 12:32:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:03,083 INFO L93 Difference]: Finished difference Result 6695 states and 23235 transitions. [2021-08-21 12:32:03,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:32:03,084 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 [2021-08-21 12:32:03,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:03,097 INFO L225 Difference]: With dead ends: 6695 [2021-08-21 12:32:03,097 INFO L226 Difference]: Without dead ends: 6470 [2021-08-21 12:32:03,098 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 736.0ms TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:32:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2021-08-21 12:32:03,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5626. [2021-08-21 12:32:03,253 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) [2021-08-21 12:32:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5626 states to 5626 states and 19644 transitions. [2021-08-21 12:32:03,265 INFO L78 Accepts]: Start accepts. Automaton has 5626 states and 19644 transitions. Word has length 47 [2021-08-21 12:32:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:03,265 INFO L470 AbstractCegarLoop]: Abstraction has 5626 states and 19644 transitions. [2021-08-21 12:32:03,265 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) [2021-08-21 12:32:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 5626 states and 19644 transitions. [2021-08-21 12:32:03,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:03,273 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:03,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:03,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-08-21 12:32:03,274 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1979559917, now seen corresponding path program 73 times [2021-08-21 12:32:03,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:03,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615426247] [2021-08-21 12:32:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:03,274 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:03,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:03,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615426247] [2021-08-21 12:32:03,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615426247] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:03,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:03,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:03,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408307835] [2021-08-21 12:32:03,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:03,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:03,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:03,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:03,587 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) [2021-08-21 12:32:04,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:04,912 INFO L93 Difference]: Finished difference Result 6714 states and 23296 transitions. [2021-08-21 12:32:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:32:04,912 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 [2021-08-21 12:32:04,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:04,926 INFO L225 Difference]: With dead ends: 6714 [2021-08-21 12:32:04,926 INFO L226 Difference]: Without dead ends: 6625 [2021-08-21 12:32:04,926 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 800.7ms TimeCoverageRelationStatistics Valid=188, Invalid=1704, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:32:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2021-08-21 12:32:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 5650. [2021-08-21 12:32:04,999 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) [2021-08-21 12:32:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5650 states to 5650 states and 19720 transitions. [2021-08-21 12:32:05,013 INFO L78 Accepts]: Start accepts. Automaton has 5650 states and 19720 transitions. Word has length 47 [2021-08-21 12:32:05,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:05,013 INFO L470 AbstractCegarLoop]: Abstraction has 5650 states and 19720 transitions. [2021-08-21 12:32:05,013 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) [2021-08-21 12:32:05,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5650 states and 19720 transitions. [2021-08-21 12:32:05,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:05,022 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:05,022 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:05,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-08-21 12:32:05,022 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:05,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1881378033, now seen corresponding path program 74 times [2021-08-21 12:32:05,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:05,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720866823] [2021-08-21 12:32:05,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:05,023 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:05,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:05,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:05,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720866823] [2021-08-21 12:32:05,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720866823] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:05,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:05,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:05,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872458916] [2021-08-21 12:32:05,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:05,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:05,342 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) [2021-08-21 12:32:06,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:06,723 INFO L93 Difference]: Finished difference Result 6722 states and 23316 transitions. [2021-08-21 12:32:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:32:06,723 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 [2021-08-21 12:32:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:06,742 INFO L225 Difference]: With dead ends: 6722 [2021-08-21 12:32:06,742 INFO L226 Difference]: Without dead ends: 6617 [2021-08-21 12:32:06,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 850.0ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:32:06,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6617 states. [2021-08-21 12:32:06,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6617 to 5642. [2021-08-21 12:32:06,845 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) [2021-08-21 12:32:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 19692 transitions. [2021-08-21 12:32:06,862 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 19692 transitions. Word has length 47 [2021-08-21 12:32:06,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:06,862 INFO L470 AbstractCegarLoop]: Abstraction has 5642 states and 19692 transitions. [2021-08-21 12:32:06,863 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) [2021-08-21 12:32:06,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 19692 transitions. [2021-08-21 12:32:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:06,872 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:06,873 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:06,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-08-21 12:32:06,873 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:06,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:06,873 INFO L82 PathProgramCache]: Analyzing trace with hash -608444325, now seen corresponding path program 75 times [2021-08-21 12:32:06,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:06,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680047533] [2021-08-21 12:32:06,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:06,873 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:07,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:07,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680047533] [2021-08-21 12:32:07,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680047533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:07,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:07,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:07,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530069121] [2021-08-21 12:32:07,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:07,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:07,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:07,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:07,201 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) [2021-08-21 12:32:08,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:08,424 INFO L93 Difference]: Finished difference Result 6719 states and 23321 transitions. [2021-08-21 12:32:08,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:32:08,424 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 [2021-08-21 12:32:08,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:08,440 INFO L225 Difference]: With dead ends: 6719 [2021-08-21 12:32:08,440 INFO L226 Difference]: Without dead ends: 6494 [2021-08-21 12:32:08,440 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 746.7ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:32:08,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2021-08-21 12:32:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5562. [2021-08-21 12:32:08,512 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) [2021-08-21 12:32:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 19436 transitions. [2021-08-21 12:32:08,524 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 19436 transitions. Word has length 47 [2021-08-21 12:32:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:08,524 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 19436 transitions. [2021-08-21 12:32:08,524 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) [2021-08-21 12:32:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 19436 transitions. [2021-08-21 12:32:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:08,532 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:08,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:08,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-08-21 12:32:08,532 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:08,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1885476099, now seen corresponding path program 76 times [2021-08-21 12:32:08,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:08,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593631796] [2021-08-21 12:32:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:08,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:08,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:08,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593631796] [2021-08-21 12:32:08,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593631796] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:08,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:08,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668499834] [2021-08-21 12:32:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:08,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:08,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:08,859 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) [2021-08-21 12:32:11,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:11,567 INFO L93 Difference]: Finished difference Result 8647 states and 30259 transitions. [2021-08-21 12:32:11,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-08-21 12:32:11,568 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 [2021-08-21 12:32:11,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:11,586 INFO L225 Difference]: With dead ends: 8647 [2021-08-21 12:32:11,586 INFO L226 Difference]: Without dead ends: 8510 [2021-08-21 12:32:11,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 1439.4ms TimeCoverageRelationStatistics Valid=350, Invalid=3310, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 12:32:11,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8510 states. [2021-08-21 12:32:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8510 to 5600. [2021-08-21 12:32:11,670 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) [2021-08-21 12:32:11,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 19547 transitions. [2021-08-21 12:32:11,682 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 19547 transitions. Word has length 47 [2021-08-21 12:32:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:11,682 INFO L470 AbstractCegarLoop]: Abstraction has 5600 states and 19547 transitions. [2021-08-21 12:32:11,682 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) [2021-08-21 12:32:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 19547 transitions. [2021-08-21 12:32:11,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:11,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:11,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:11,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-08-21 12:32:11,691 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:11,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1899007521, now seen corresponding path program 77 times [2021-08-21 12:32:11,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:11,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694932542] [2021-08-21 12:32:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:11,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:12,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:12,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:12,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694932542] [2021-08-21 12:32:12,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694932542] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:12,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:12,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:12,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036669535] [2021-08-21 12:32:12,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:12,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:12,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:12,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:12,020 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) [2021-08-21 12:32:15,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:15,108 INFO L93 Difference]: Finished difference Result 9979 states and 35113 transitions. [2021-08-21 12:32:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 12:32:15,108 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 [2021-08-21 12:32:15,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:15,130 INFO L225 Difference]: With dead ends: 9979 [2021-08-21 12:32:15,130 INFO L226 Difference]: Without dead ends: 9890 [2021-08-21 12:32:15,131 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1195 ImplicationChecksByTransitivity, 1701.4ms TimeCoverageRelationStatistics Valid=422, Invalid=4000, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 12:32:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9890 states. [2021-08-21 12:32:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9890 to 5604. [2021-08-21 12:32:15,230 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) [2021-08-21 12:32:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5604 states to 5604 states and 19555 transitions. [2021-08-21 12:32:15,243 INFO L78 Accepts]: Start accepts. Automaton has 5604 states and 19555 transitions. Word has length 47 [2021-08-21 12:32:15,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:15,243 INFO L470 AbstractCegarLoop]: Abstraction has 5604 states and 19555 transitions. [2021-08-21 12:32:15,243 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) [2021-08-21 12:32:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5604 states and 19555 transitions. [2021-08-21 12:32:15,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:15,252 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:15,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:15,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-08-21 12:32:15,252 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:15,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:15,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1545307867, now seen corresponding path program 78 times [2021-08-21 12:32:15,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:15,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002352188] [2021-08-21 12:32:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:15,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:15,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:15,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002352188] [2021-08-21 12:32:15,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002352188] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:15,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:15,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135979667] [2021-08-21 12:32:15,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:15,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:15,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:15,584 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) [2021-08-21 12:32:18,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:18,519 INFO L93 Difference]: Finished difference Result 10566 states and 37503 transitions. [2021-08-21 12:32:18,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 12:32:18,519 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 [2021-08-21 12:32:18,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:18,545 INFO L225 Difference]: With dead ends: 10566 [2021-08-21 12:32:18,545 INFO L226 Difference]: Without dead ends: 10459 [2021-08-21 12:32:18,546 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1446 ImplicationChecksByTransitivity, 1597.4ms TimeCoverageRelationStatistics Valid=445, Invalid=4667, Unknown=0, NotChecked=0, Total=5112 [2021-08-21 12:32:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10459 states. [2021-08-21 12:32:18,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10459 to 5566. [2021-08-21 12:32:18,648 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) [2021-08-21 12:32:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5566 states to 5566 states and 19442 transitions. [2021-08-21 12:32:18,660 INFO L78 Accepts]: Start accepts. Automaton has 5566 states and 19442 transitions. Word has length 47 [2021-08-21 12:32:18,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:18,661 INFO L470 AbstractCegarLoop]: Abstraction has 5566 states and 19442 transitions. [2021-08-21 12:32:18,661 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) [2021-08-21 12:32:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 5566 states and 19442 transitions. [2021-08-21 12:32:18,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:18,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:18,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:18,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-08-21 12:32:18,669 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:18,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:18,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1445941727, now seen corresponding path program 79 times [2021-08-21 12:32:18,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:18,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811522502] [2021-08-21 12:32:18,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:18,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:18,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:18,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811522502] [2021-08-21 12:32:18,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811522502] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:18,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:18,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:18,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921907615] [2021-08-21 12:32:18,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:18,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:18,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:18,992 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) [2021-08-21 12:32:20,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:20,392 INFO L93 Difference]: Finished difference Result 6918 states and 23853 transitions. [2021-08-21 12:32:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-08-21 12:32:20,392 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 [2021-08-21 12:32:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:20,412 INFO L225 Difference]: With dead ends: 6918 [2021-08-21 12:32:20,412 INFO L226 Difference]: Without dead ends: 6829 [2021-08-21 12:32:20,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 895.5ms TimeCoverageRelationStatistics Valid=218, Invalid=2038, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 12:32:20,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6829 states. [2021-08-21 12:32:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6829 to 5576. [2021-08-21 12:32:20,527 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) [2021-08-21 12:32:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5576 states to 5576 states and 19469 transitions. [2021-08-21 12:32:20,545 INFO L78 Accepts]: Start accepts. Automaton has 5576 states and 19469 transitions. Word has length 47 [2021-08-21 12:32:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:20,546 INFO L470 AbstractCegarLoop]: Abstraction has 5576 states and 19469 transitions. [2021-08-21 12:32:20,546 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) [2021-08-21 12:32:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 5576 states and 19469 transitions. [2021-08-21 12:32:20,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:20,556 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:20,556 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:20,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-08-21 12:32:20,556 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:20,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1122279903, now seen corresponding path program 80 times [2021-08-21 12:32:20,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:20,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76327230] [2021-08-21 12:32:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:20,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:20,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:20,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76327230] [2021-08-21 12:32:20,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76327230] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:20,894 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:20,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:20,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472823029] [2021-08-21 12:32:20,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:20,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:20,894 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) [2021-08-21 12:32:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:22,553 INFO L93 Difference]: Finished difference Result 6835 states and 23610 transitions. [2021-08-21 12:32:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 12:32:22,553 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 [2021-08-21 12:32:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:22,568 INFO L225 Difference]: With dead ends: 6835 [2021-08-21 12:32:22,568 INFO L226 Difference]: Without dead ends: 6714 [2021-08-21 12:32:22,568 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 1049.2ms TimeCoverageRelationStatistics Valid=227, Invalid=2223, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 12:32:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2021-08-21 12:32:22,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 5572. [2021-08-21 12:32:22,638 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) [2021-08-21 12:32:22,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5572 states to 5572 states and 19455 transitions. [2021-08-21 12:32:22,650 INFO L78 Accepts]: Start accepts. Automaton has 5572 states and 19455 transitions. Word has length 47 [2021-08-21 12:32:22,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:22,650 INFO L470 AbstractCegarLoop]: Abstraction has 5572 states and 19455 transitions. [2021-08-21 12:32:22,650 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) [2021-08-21 12:32:22,650 INFO L276 IsEmpty]: Start isEmpty. Operand 5572 states and 19455 transitions. [2021-08-21 12:32:22,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:22,658 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:22,658 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:22,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-08-21 12:32:22,658 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:22,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1277604133, now seen corresponding path program 81 times [2021-08-21 12:32:22,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:22,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139913978] [2021-08-21 12:32:22,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:22,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:23,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:23,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139913978] [2021-08-21 12:32:23,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139913978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:23,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:23,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:23,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795578467] [2021-08-21 12:32:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:23,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:23,012 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) [2021-08-21 12:32:24,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:24,857 INFO L93 Difference]: Finished difference Result 7413 states and 25628 transitions. [2021-08-21 12:32:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 12:32:24,858 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 [2021-08-21 12:32:24,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:24,874 INFO L225 Difference]: With dead ends: 7413 [2021-08-21 12:32:24,874 INFO L226 Difference]: Without dead ends: 7298 [2021-08-21 12:32:24,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1104.3ms TimeCoverageRelationStatistics Valid=248, Invalid=2404, Unknown=0, NotChecked=0, Total=2652 [2021-08-21 12:32:24,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7298 states. [2021-08-21 12:32:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7298 to 5684. [2021-08-21 12:32:24,960 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) [2021-08-21 12:32:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19815 transitions. [2021-08-21 12:32:24,972 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19815 transitions. Word has length 47 [2021-08-21 12:32:24,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:24,972 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19815 transitions. [2021-08-21 12:32:24,972 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) [2021-08-21 12:32:24,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19815 transitions. [2021-08-21 12:32:24,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:24,981 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:24,981 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:24,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-08-21 12:32:24,981 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:24,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:24,981 INFO L82 PathProgramCache]: Analyzing trace with hash -978712455, now seen corresponding path program 82 times [2021-08-21 12:32:24,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:24,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238405343] [2021-08-21 12:32:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:24,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:25,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:25,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238405343] [2021-08-21 12:32:25,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238405343] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:25,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:25,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:25,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601632312] [2021-08-21 12:32:25,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:25,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:25,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:25,357 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) [2021-08-21 12:32:26,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:26,692 INFO L93 Difference]: Finished difference Result 6907 states and 23824 transitions. [2021-08-21 12:32:26,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:32:26,693 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 [2021-08-21 12:32:26,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:26,717 INFO L225 Difference]: With dead ends: 6907 [2021-08-21 12:32:26,717 INFO L226 Difference]: Without dead ends: 6810 [2021-08-21 12:32:26,717 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 819.4ms TimeCoverageRelationStatistics Valid=198, Invalid=1964, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:32:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6810 states. [2021-08-21 12:32:26,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6810 to 5698. [2021-08-21 12:32:26,797 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) [2021-08-21 12:32:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 19842 transitions. [2021-08-21 12:32:26,809 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 19842 transitions. Word has length 47 [2021-08-21 12:32:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:26,809 INFO L470 AbstractCegarLoop]: Abstraction has 5698 states and 19842 transitions. [2021-08-21 12:32:26,809 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) [2021-08-21 12:32:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 19842 transitions. [2021-08-21 12:32:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:26,818 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:26,818 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:26,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-08-21 12:32:26,818 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:26,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:26,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1590834331, now seen corresponding path program 83 times [2021-08-21 12:32:26,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:26,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614275828] [2021-08-21 12:32:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:26,822 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:27,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:27,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:27,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614275828] [2021-08-21 12:32:27,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614275828] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:27,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:27,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:27,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589344138] [2021-08-21 12:32:27,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:27,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:27,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:27,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:27,181 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) [2021-08-21 12:32:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:28,271 INFO L93 Difference]: Finished difference Result 6883 states and 23734 transitions. [2021-08-21 12:32:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:32:28,271 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 [2021-08-21 12:32:28,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:28,286 INFO L225 Difference]: With dead ends: 6883 [2021-08-21 12:32:28,286 INFO L226 Difference]: Without dead ends: 6778 [2021-08-21 12:32:28,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 696.6ms TimeCoverageRelationStatistics Valid=177, Invalid=1715, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:32:28,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-08-21 12:32:28,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5684. [2021-08-21 12:32:28,364 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) [2021-08-21 12:32:28,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19809 transitions. [2021-08-21 12:32:28,377 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19809 transitions. Word has length 47 [2021-08-21 12:32:28,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:28,377 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19809 transitions. [2021-08-21 12:32:28,377 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) [2021-08-21 12:32:28,377 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19809 transitions. [2021-08-21 12:32:28,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:28,386 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:28,386 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:28,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-08-21 12:32:28,386 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:28,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:28,387 INFO L82 PathProgramCache]: Analyzing trace with hash -384565221, now seen corresponding path program 84 times [2021-08-21 12:32:28,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:28,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828174399] [2021-08-21 12:32:28,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:28,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:28,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:28,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828174399] [2021-08-21 12:32:28,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828174399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:28,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:28,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:28,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289066600] [2021-08-21 12:32:28,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:28,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:28,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:28,727 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) [2021-08-21 12:32:30,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:30,259 INFO L93 Difference]: Finished difference Result 6810 states and 23594 transitions. [2021-08-21 12:32:30,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 12:32:30,259 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 [2021-08-21 12:32:30,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:30,274 INFO L225 Difference]: With dead ends: 6810 [2021-08-21 12:32:30,274 INFO L226 Difference]: Without dead ends: 6721 [2021-08-21 12:32:30,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 973.4ms TimeCoverageRelationStatistics Valid=231, Invalid=2121, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 12:32:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6721 states. [2021-08-21 12:32:30,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6721 to 5704. [2021-08-21 12:32:30,358 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) [2021-08-21 12:32:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19879 transitions. [2021-08-21 12:32:30,372 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19879 transitions. Word has length 47 [2021-08-21 12:32:30,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:30,372 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19879 transitions. [2021-08-21 12:32:30,372 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) [2021-08-21 12:32:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19879 transitions. [2021-08-21 12:32:30,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:30,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:30,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:30,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-08-21 12:32:30,383 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:30,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:30,383 INFO L82 PathProgramCache]: Analyzing trace with hash -708227045, now seen corresponding path program 85 times [2021-08-21 12:32:30,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:30,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864019125] [2021-08-21 12:32:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:30,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:30,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:30,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864019125] [2021-08-21 12:32:30,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864019125] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:30,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:30,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:30,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620121110] [2021-08-21 12:32:30,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:30,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:30,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:30,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:30,724 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) [2021-08-21 12:32:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:32,155 INFO L93 Difference]: Finished difference Result 6822 states and 23626 transitions. [2021-08-21 12:32:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-08-21 12:32:32,155 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 [2021-08-21 12:32:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:32,170 INFO L225 Difference]: With dead ends: 6822 [2021-08-21 12:32:32,170 INFO L226 Difference]: Without dead ends: 6693 [2021-08-21 12:32:32,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 494 ImplicationChecksByTransitivity, 902.3ms TimeCoverageRelationStatistics Valid=224, Invalid=2128, Unknown=0, NotChecked=0, Total=2352 [2021-08-21 12:32:32,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6693 states. [2021-08-21 12:32:32,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6693 to 5706. [2021-08-21 12:32:32,249 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) [2021-08-21 12:32:32,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5706 states to 5706 states and 19876 transitions. [2021-08-21 12:32:32,262 INFO L78 Accepts]: Start accepts. Automaton has 5706 states and 19876 transitions. Word has length 47 [2021-08-21 12:32:32,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:32,262 INFO L470 AbstractCegarLoop]: Abstraction has 5706 states and 19876 transitions. [2021-08-21 12:32:32,269 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) [2021-08-21 12:32:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 5706 states and 19876 transitions. [2021-08-21 12:32:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:32,279 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:32,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:32,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-08-21 12:32:32,286 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:32,286 INFO L82 PathProgramCache]: Analyzing trace with hash -652115591, now seen corresponding path program 86 times [2021-08-21 12:32:32,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:32,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194327258] [2021-08-21 12:32:32,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:32,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:32,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:32,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194327258] [2021-08-21 12:32:32,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194327258] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:32,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:32,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:32,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517261357] [2021-08-21 12:32:32,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:32,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:32,595 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) [2021-08-21 12:32:33,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:33,958 INFO L93 Difference]: Finished difference Result 6855 states and 23757 transitions. [2021-08-21 12:32:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 12:32:33,959 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 [2021-08-21 12:32:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:33,973 INFO L225 Difference]: With dead ends: 6855 [2021-08-21 12:32:33,973 INFO L226 Difference]: Without dead ends: 6694 [2021-08-21 12:32:33,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 836.2ms TimeCoverageRelationStatistics Valid=221, Invalid=2035, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 12:32:33,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6694 states. [2021-08-21 12:32:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6694 to 5690. [2021-08-21 12:32:34,117 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) [2021-08-21 12:32:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 19824 transitions. [2021-08-21 12:32:34,129 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 19824 transitions. Word has length 47 [2021-08-21 12:32:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:34,130 INFO L470 AbstractCegarLoop]: Abstraction has 5690 states and 19824 transitions. [2021-08-21 12:32:34,130 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) [2021-08-21 12:32:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 19824 transitions. [2021-08-21 12:32:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:34,139 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:34,139 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:34,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-08-21 12:32:34,139 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1844482075, now seen corresponding path program 87 times [2021-08-21 12:32:34,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:34,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277751690] [2021-08-21 12:32:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:34,140 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:34,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:34,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:34,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277751690] [2021-08-21 12:32:34,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277751690] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:34,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:34,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:34,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384318243] [2021-08-21 12:32:34,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:34,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:34,474 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) [2021-08-21 12:32:37,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:37,017 INFO L93 Difference]: Finished difference Result 8085 states and 28237 transitions. [2021-08-21 12:32:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 12:32:37,017 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 [2021-08-21 12:32:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:37,037 INFO L225 Difference]: With dead ends: 8085 [2021-08-21 12:32:37,037 INFO L226 Difference]: Without dead ends: 7980 [2021-08-21 12:32:37,038 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 1473.2ms TimeCoverageRelationStatistics Valid=383, Invalid=3907, Unknown=0, NotChecked=0, Total=4290 [2021-08-21 12:32:37,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7980 states. [2021-08-21 12:32:37,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7980 to 5716. [2021-08-21 12:32:37,137 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) [2021-08-21 12:32:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19909 transitions. [2021-08-21 12:32:37,152 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19909 transitions. Word has length 47 [2021-08-21 12:32:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:37,152 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19909 transitions. [2021-08-21 12:32:37,152 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) [2021-08-21 12:32:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19909 transitions. [2021-08-21 12:32:37,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:37,161 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:37,161 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:37,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-08-21 12:32:37,161 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:37,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:37,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1069364473, now seen corresponding path program 88 times [2021-08-21 12:32:37,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:37,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665374470] [2021-08-21 12:32:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:37,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:37,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:37,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665374470] [2021-08-21 12:32:37,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665374470] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:37,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:37,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:37,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520874377] [2021-08-21 12:32:37,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:37,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:37,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:37,549 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) [2021-08-21 12:32:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:39,603 INFO L93 Difference]: Finished difference Result 7773 states and 27009 transitions. [2021-08-21 12:32:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 12:32:39,604 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 [2021-08-21 12:32:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:39,623 INFO L225 Difference]: With dead ends: 7773 [2021-08-21 12:32:39,623 INFO L226 Difference]: Without dead ends: 7678 [2021-08-21 12:32:39,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1197.7ms TimeCoverageRelationStatistics Valid=301, Invalid=3005, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 12:32:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7678 states. [2021-08-21 12:32:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7678 to 5708. [2021-08-21 12:32:39,711 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) [2021-08-21 12:32:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19889 transitions. [2021-08-21 12:32:39,727 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19889 transitions. Word has length 47 [2021-08-21 12:32:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:39,728 INFO L470 AbstractCegarLoop]: Abstraction has 5708 states and 19889 transitions. [2021-08-21 12:32:39,728 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) [2021-08-21 12:32:39,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19889 transitions. [2021-08-21 12:32:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:39,738 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:39,738 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:39,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-08-21 12:32:39,738 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1368256151, now seen corresponding path program 89 times [2021-08-21 12:32:39,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:39,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715614161] [2021-08-21 12:32:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:39,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:40,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:40,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:40,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715614161] [2021-08-21 12:32:40,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715614161] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:40,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:40,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:40,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476281739] [2021-08-21 12:32:40,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:40,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:40,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:40,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:40,081 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) [2021-08-21 12:32:41,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:41,507 INFO L93 Difference]: Finished difference Result 6958 states and 23989 transitions. [2021-08-21 12:32:41,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 12:32:41,507 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 [2021-08-21 12:32:41,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:41,522 INFO L225 Difference]: With dead ends: 6958 [2021-08-21 12:32:41,522 INFO L226 Difference]: Without dead ends: 6861 [2021-08-21 12:32:41,522 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 884.1ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:32:41,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2021-08-21 12:32:41,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 5716. [2021-08-21 12:32:41,598 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) [2021-08-21 12:32:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5716 states to 5716 states and 19907 transitions. [2021-08-21 12:32:41,610 INFO L78 Accepts]: Start accepts. Automaton has 5716 states and 19907 transitions. Word has length 47 [2021-08-21 12:32:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:41,610 INFO L470 AbstractCegarLoop]: Abstraction has 5716 states and 19907 transitions. [2021-08-21 12:32:41,610 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) [2021-08-21 12:32:41,610 INFO L276 IsEmpty]: Start isEmpty. Operand 5716 states and 19907 transitions. [2021-08-21 12:32:41,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:41,618 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:41,618 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:41,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-08-21 12:32:41,618 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:41,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:41,619 INFO L82 PathProgramCache]: Analyzing trace with hash -357164359, now seen corresponding path program 90 times [2021-08-21 12:32:41,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:41,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391524254] [2021-08-21 12:32:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:41,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:41,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:41,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391524254] [2021-08-21 12:32:41,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391524254] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:41,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:41,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:41,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132664379] [2021-08-21 12:32:41,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:41,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:41,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:41,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:41,955 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) [2021-08-21 12:32:43,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:43,263 INFO L93 Difference]: Finished difference Result 6934 states and 23899 transitions. [2021-08-21 12:32:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:32:43,263 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 [2021-08-21 12:32:43,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:43,280 INFO L225 Difference]: With dead ends: 6934 [2021-08-21 12:32:43,280 INFO L226 Difference]: Without dead ends: 6835 [2021-08-21 12:32:43,280 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 809.0ms TimeCoverageRelationStatistics Valid=192, Invalid=1788, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 12:32:43,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6835 states. [2021-08-21 12:32:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6835 to 5708. [2021-08-21 12:32:43,361 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) [2021-08-21 12:32:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5708 states to 5708 states and 19887 transitions. [2021-08-21 12:32:43,373 INFO L78 Accepts]: Start accepts. Automaton has 5708 states and 19887 transitions. Word has length 47 [2021-08-21 12:32:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:43,373 INFO L470 AbstractCegarLoop]: Abstraction has 5708 states and 19887 transitions. [2021-08-21 12:32:43,373 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) [2021-08-21 12:32:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5708 states and 19887 transitions. [2021-08-21 12:32:43,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:43,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:43,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:43,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-08-21 12:32:43,382 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:43,382 INFO L82 PathProgramCache]: Analyzing trace with hash 718580205, now seen corresponding path program 91 times [2021-08-21 12:32:43,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:43,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263513104] [2021-08-21 12:32:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:43,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:43,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:43,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:43,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263513104] [2021-08-21 12:32:43,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263513104] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:43,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:43,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:43,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930068006] [2021-08-21 12:32:43,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:43,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:43,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:43,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:43,767 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) [2021-08-21 12:32:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:45,172 INFO L93 Difference]: Finished difference Result 6809 states and 23600 transitions. [2021-08-21 12:32:45,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:32:45,172 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 [2021-08-21 12:32:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:45,186 INFO L225 Difference]: With dead ends: 6809 [2021-08-21 12:32:45,187 INFO L226 Difference]: Without dead ends: 6664 [2021-08-21 12:32:45,187 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 857.2ms TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:32:45,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2021-08-21 12:32:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 5720. [2021-08-21 12:32:45,266 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) [2021-08-21 12:32:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2021-08-21 12:32:45,278 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2021-08-21 12:32:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:45,278 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2021-08-21 12:32:45,278 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) [2021-08-21 12:32:45,278 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2021-08-21 12:32:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:45,286 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:45,286 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:45,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-08-21 12:32:45,287 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:45,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:45,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1224872501, now seen corresponding path program 92 times [2021-08-21 12:32:45,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:45,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586769115] [2021-08-21 12:32:45,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:45,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:45,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:45,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586769115] [2021-08-21 12:32:45,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586769115] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:45,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:45,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:45,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116109567] [2021-08-21 12:32:45,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:45,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:45,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:45,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:45,627 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) [2021-08-21 12:32:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:46,931 INFO L93 Difference]: Finished difference Result 6809 states and 23523 transitions. [2021-08-21 12:32:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 12:32:46,931 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 [2021-08-21 12:32:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:46,945 INFO L225 Difference]: With dead ends: 6809 [2021-08-21 12:32:46,945 INFO L226 Difference]: Without dead ends: 6712 [2021-08-21 12:32:46,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 841.2ms TimeCoverageRelationStatistics Valid=186, Invalid=1706, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:32:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2021-08-21 12:32:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 5726. [2021-08-21 12:32:47,016 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) [2021-08-21 12:32:47,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5726 states to 5726 states and 19932 transitions. [2021-08-21 12:32:47,028 INFO L78 Accepts]: Start accepts. Automaton has 5726 states and 19932 transitions. Word has length 47 [2021-08-21 12:32:47,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:47,028 INFO L470 AbstractCegarLoop]: Abstraction has 5726 states and 19932 transitions. [2021-08-21 12:32:47,028 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) [2021-08-21 12:32:47,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5726 states and 19932 transitions. [2021-08-21 12:32:47,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:47,037 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:47,037 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:47,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-08-21 12:32:47,037 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:47,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:47,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1344674285, now seen corresponding path program 93 times [2021-08-21 12:32:47,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:47,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52565362] [2021-08-21 12:32:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:47,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:47,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:47,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52565362] [2021-08-21 12:32:47,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52565362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:47,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:47,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:32:47,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474012962] [2021-08-21 12:32:47,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:32:47,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:32:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:32:47,370 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) [2021-08-21 12:32:48,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:48,619 INFO L93 Difference]: Finished difference Result 6710 states and 23218 transitions. [2021-08-21 12:32:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:32:48,619 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 [2021-08-21 12:32:48,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:48,633 INFO L225 Difference]: With dead ends: 6710 [2021-08-21 12:32:48,634 INFO L226 Difference]: Without dead ends: 6581 [2021-08-21 12:32:48,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 761.8ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:32:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2021-08-21 12:32:48,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 5688. [2021-08-21 12:32:48,705 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) [2021-08-21 12:32:48,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5688 states to 5688 states and 19843 transitions. [2021-08-21 12:32:48,717 INFO L78 Accepts]: Start accepts. Automaton has 5688 states and 19843 transitions. Word has length 47 [2021-08-21 12:32:48,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:48,717 INFO L470 AbstractCegarLoop]: Abstraction has 5688 states and 19843 transitions. [2021-08-21 12:32:48,717 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) [2021-08-21 12:32:48,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5688 states and 19843 transitions. [2021-08-21 12:32:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:48,725 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:48,725 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:48,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-08-21 12:32:48,725 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:48,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:48,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1118815907, now seen corresponding path program 94 times [2021-08-21 12:32:48,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:48,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025412686] [2021-08-21 12:32:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:48,726 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:49,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:49,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025412686] [2021-08-21 12:32:49,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025412686] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:49,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:49,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:32:49,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296818788] [2021-08-21 12:32:49,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:32:49,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:49,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:32:49,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:32:49,019 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) [2021-08-21 12:32:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:50,052 INFO L93 Difference]: Finished difference Result 6627 states and 22989 transitions. [2021-08-21 12:32:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:32:50,052 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 [2021-08-21 12:32:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:50,066 INFO L225 Difference]: With dead ends: 6627 [2021-08-21 12:32:50,066 INFO L226 Difference]: Without dead ends: 6490 [2021-08-21 12:32:50,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 608.4ms TimeCoverageRelationStatistics Valid=145, Invalid=1187, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 12:32:50,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2021-08-21 12:32:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 5704. [2021-08-21 12:32:50,139 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) [2021-08-21 12:32:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19891 transitions. [2021-08-21 12:32:50,151 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19891 transitions. Word has length 47 [2021-08-21 12:32:50,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:50,151 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19891 transitions. [2021-08-21 12:32:50,151 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) [2021-08-21 12:32:50,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19891 transitions. [2021-08-21 12:32:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:50,160 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:50,160 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:50,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-08-21 12:32:50,161 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:50,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:50,161 INFO L82 PathProgramCache]: Analyzing trace with hash 398880315, now seen corresponding path program 95 times [2021-08-21 12:32:50,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:50,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244268802] [2021-08-21 12:32:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:50,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:50,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:50,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244268802] [2021-08-21 12:32:50,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244268802] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:50,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:50,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:50,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599946433] [2021-08-21 12:32:50,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:50,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:50,510 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) [2021-08-21 12:32:51,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:51,693 INFO L93 Difference]: Finished difference Result 6686 states and 23148 transitions. [2021-08-21 12:32:51,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:32:51,694 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 [2021-08-21 12:32:51,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:51,708 INFO L225 Difference]: With dead ends: 6686 [2021-08-21 12:32:51,708 INFO L226 Difference]: Without dead ends: 6597 [2021-08-21 12:32:51,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 721.4ms TimeCoverageRelationStatistics Valid=161, Invalid=1399, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:32:51,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6597 states. [2021-08-21 12:32:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6597 to 5768. [2021-08-21 12:32:51,790 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) [2021-08-21 12:32:51,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20107 transitions. [2021-08-21 12:32:51,804 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20107 transitions. Word has length 47 [2021-08-21 12:32:51,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:51,804 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20107 transitions. [2021-08-21 12:32:51,804 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) [2021-08-21 12:32:51,804 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20107 transitions. [2021-08-21 12:32:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:51,813 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:51,813 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:51,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-08-21 12:32:51,813 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:51,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:51,814 INFO L82 PathProgramCache]: Analyzing trace with hash 832909661, now seen corresponding path program 96 times [2021-08-21 12:32:51,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:51,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188240568] [2021-08-21 12:32:51,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:51,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:52,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:52,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188240568] [2021-08-21 12:32:52,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188240568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:52,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:52,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:52,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186380675] [2021-08-21 12:32:52,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:52,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:52,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:52,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:52,177 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) [2021-08-21 12:32:53,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:53,298 INFO L93 Difference]: Finished difference Result 6579 states and 22821 transitions. [2021-08-21 12:32:53,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 12:32:53,299 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 [2021-08-21 12:32:53,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:53,313 INFO L225 Difference]: With dead ends: 6579 [2021-08-21 12:32:53,313 INFO L226 Difference]: Without dead ends: 6450 [2021-08-21 12:32:53,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 621.6ms TimeCoverageRelationStatistics Valid=144, Invalid=1262, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:32:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6450 states. [2021-08-21 12:32:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6450 to 5768. [2021-08-21 12:32:53,396 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) [2021-08-21 12:32:53,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2021-08-21 12:32:53,409 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2021-08-21 12:32:53,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:53,409 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2021-08-21 12:32:53,410 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) [2021-08-21 12:32:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2021-08-21 12:32:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:53,419 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:53,419 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:53,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-08-21 12:32:53,419 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:53,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:53,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1900624149, now seen corresponding path program 97 times [2021-08-21 12:32:53,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:53,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117583321] [2021-08-21 12:32:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:53,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:53,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:53,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:53,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:53,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117583321] [2021-08-21 12:32:53,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117583321] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:53,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:53,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:53,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726599155] [2021-08-21 12:32:53,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:53,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:53,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:53,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:53,744 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) [2021-08-21 12:32:54,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:54,872 INFO L93 Difference]: Finished difference Result 6638 states and 22988 transitions. [2021-08-21 12:32:54,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:32:54,872 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 [2021-08-21 12:32:54,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:54,887 INFO L225 Difference]: With dead ends: 6638 [2021-08-21 12:32:54,887 INFO L226 Difference]: Without dead ends: 6549 [2021-08-21 12:32:54,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 675.7ms TimeCoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:32:54,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2021-08-21 12:32:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 5768. [2021-08-21 12:32:54,962 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) [2021-08-21 12:32:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20083 transitions. [2021-08-21 12:32:54,974 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20083 transitions. Word has length 47 [2021-08-21 12:32:54,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:54,974 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20083 transitions. [2021-08-21 12:32:54,974 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) [2021-08-21 12:32:54,974 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20083 transitions. [2021-08-21 12:32:54,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:54,983 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:54,983 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:54,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-08-21 12:32:54,983 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:54,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:54,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1466594803, now seen corresponding path program 98 times [2021-08-21 12:32:54,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:54,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803096334] [2021-08-21 12:32:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:54,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:55,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:55,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803096334] [2021-08-21 12:32:55,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803096334] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:55,343 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:55,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:55,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063858604] [2021-08-21 12:32:55,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:55,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:55,344 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) [2021-08-21 12:32:56,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:56,392 INFO L93 Difference]: Finished difference Result 6630 states and 22960 transitions. [2021-08-21 12:32:56,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:32:56,393 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 [2021-08-21 12:32:56,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:56,407 INFO L225 Difference]: With dead ends: 6630 [2021-08-21 12:32:56,407 INFO L226 Difference]: Without dead ends: 6525 [2021-08-21 12:32:56,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 651.5ms TimeCoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:32:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6525 states. [2021-08-21 12:32:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6525 to 5784. [2021-08-21 12:32:56,483 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) [2021-08-21 12:32:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20131 transitions. [2021-08-21 12:32:56,496 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20131 transitions. Word has length 47 [2021-08-21 12:32:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:56,496 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20131 transitions. [2021-08-21 12:32:56,496 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) [2021-08-21 12:32:56,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20131 transitions. [2021-08-21 12:32:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:56,505 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:56,505 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:56,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-08-21 12:32:56,505 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:56,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:56,505 INFO L82 PathProgramCache]: Analyzing trace with hash -193661095, now seen corresponding path program 99 times [2021-08-21 12:32:56,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:56,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263112523] [2021-08-21 12:32:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:56,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:56,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:56,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263112523] [2021-08-21 12:32:56,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263112523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:56,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:56,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:56,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37698095] [2021-08-21 12:32:56,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:56,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:56,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:56,775 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) [2021-08-21 12:32:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:57,715 INFO L93 Difference]: Finished difference Result 6643 states and 23013 transitions. [2021-08-21 12:32:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:32:57,715 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 [2021-08-21 12:32:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:57,729 INFO L225 Difference]: With dead ends: 6643 [2021-08-21 12:32:57,729 INFO L226 Difference]: Without dead ends: 6390 [2021-08-21 12:32:57,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 537.9ms TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:32:57,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6390 states. [2021-08-21 12:32:57,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6390 to 5676. [2021-08-21 12:32:57,868 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) [2021-08-21 12:32:57,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2021-08-21 12:32:57,880 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2021-08-21 12:32:57,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:57,880 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2021-08-21 12:32:57,880 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) [2021-08-21 12:32:57,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2021-08-21 12:32:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:57,888 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:57,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:57,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-08-21 12:32:57,889 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:57,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:57,889 INFO L82 PathProgramCache]: Analyzing trace with hash -79948249, now seen corresponding path program 100 times [2021-08-21 12:32:57,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:57,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340343397] [2021-08-21 12:32:57,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:57,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:58,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:58,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:58,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340343397] [2021-08-21 12:32:58,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340343397] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:58,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:58,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:32:58,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093536478] [2021-08-21 12:32:58,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:32:58,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:32:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:32:58,191 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) [2021-08-21 12:32:59,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:32:59,149 INFO L93 Difference]: Finished difference Result 6495 states and 22527 transitions. [2021-08-21 12:32:59,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:32:59,149 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 [2021-08-21 12:32:59,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:32:59,163 INFO L225 Difference]: With dead ends: 6495 [2021-08-21 12:32:59,163 INFO L226 Difference]: Without dead ends: 6358 [2021-08-21 12:32:59,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 567.5ms TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 12:32:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6358 states. [2021-08-21 12:32:59,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6358 to 5732. [2021-08-21 12:32:59,237 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) [2021-08-21 12:32:59,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19979 transitions. [2021-08-21 12:32:59,249 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19979 transitions. Word has length 47 [2021-08-21 12:32:59,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:32:59,250 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 19979 transitions. [2021-08-21 12:32:59,250 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) [2021-08-21 12:32:59,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19979 transitions. [2021-08-21 12:32:59,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:32:59,258 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:32:59,258 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:32:59,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-08-21 12:32:59,259 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:32:59,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:32:59,259 INFO L82 PathProgramCache]: Analyzing trace with hash 637619751, now seen corresponding path program 101 times [2021-08-21 12:32:59,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:32:59,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867989130] [2021-08-21 12:32:59,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:32:59,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:32:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:32:59,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:32:59,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:32:59,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867989130] [2021-08-21 12:32:59,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867989130] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:32:59,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:32:59,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:32:59,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370691617] [2021-08-21 12:32:59,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:32:59,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:32:59,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:32:59,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:32:59,534 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) [2021-08-21 12:33:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:00,614 INFO L93 Difference]: Finished difference Result 6554 states and 22686 transitions. [2021-08-21 12:33:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:33:00,615 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 [2021-08-21 12:33:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:00,629 INFO L225 Difference]: With dead ends: 6554 [2021-08-21 12:33:00,629 INFO L226 Difference]: Without dead ends: 6465 [2021-08-21 12:33:00,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 618.4ms TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:33:00,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6465 states. [2021-08-21 12:33:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6465 to 5796. [2021-08-21 12:33:00,703 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) [2021-08-21 12:33:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20195 transitions. [2021-08-21 12:33:00,715 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20195 transitions. Word has length 47 [2021-08-21 12:33:00,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:00,715 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20195 transitions. [2021-08-21 12:33:00,716 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) [2021-08-21 12:33:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20195 transitions. [2021-08-21 12:33:00,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:00,724 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:00,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:00,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-08-21 12:33:00,725 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:00,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1046842935, now seen corresponding path program 102 times [2021-08-21 12:33:00,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:00,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785791145] [2021-08-21 12:33:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:00,725 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:01,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:01,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785791145] [2021-08-21 12:33:01,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785791145] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:01,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:01,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:01,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017742191] [2021-08-21 12:33:01,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:01,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:01,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:01,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:01,043 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) [2021-08-21 12:33:02,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:02,074 INFO L93 Difference]: Finished difference Result 6447 states and 22359 transitions. [2021-08-21 12:33:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-08-21 12:33:02,075 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 [2021-08-21 12:33:02,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:02,088 INFO L225 Difference]: With dead ends: 6447 [2021-08-21 12:33:02,088 INFO L226 Difference]: Without dead ends: 6318 [2021-08-21 12:33:02,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 615.0ms TimeCoverageRelationStatistics Valid=140, Invalid=1266, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:33:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6318 states. [2021-08-21 12:33:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6318 to 5796. [2021-08-21 12:33:02,163 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) [2021-08-21 12:33:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2021-08-21 12:33:02,176 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2021-08-21 12:33:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:02,176 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2021-08-21 12:33:02,176 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) [2021-08-21 12:33:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2021-08-21 12:33:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:02,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:02,186 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:02,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-08-21 12:33:02,186 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:02,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:02,186 INFO L82 PathProgramCache]: Analyzing trace with hash 997297481, now seen corresponding path program 103 times [2021-08-21 12:33:02,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:02,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283840119] [2021-08-21 12:33:02,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:02,186 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:02,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:02,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283840119] [2021-08-21 12:33:02,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283840119] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:02,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:02,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:02,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216058844] [2021-08-21 12:33:02,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:02,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:02,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:02,463 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) [2021-08-21 12:33:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:03,528 INFO L93 Difference]: Finished difference Result 6506 states and 22526 transitions. [2021-08-21 12:33:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:33:03,529 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 [2021-08-21 12:33:03,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:03,542 INFO L225 Difference]: With dead ends: 6506 [2021-08-21 12:33:03,542 INFO L226 Difference]: Without dead ends: 6417 [2021-08-21 12:33:03,542 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 612.2ms TimeCoverageRelationStatistics Valid=162, Invalid=1478, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:33:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6417 states. [2021-08-21 12:33:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6417 to 5796. [2021-08-21 12:33:03,617 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) [2021-08-21 12:33:03,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5796 states to 5796 states and 20171 transitions. [2021-08-21 12:33:03,629 INFO L78 Accepts]: Start accepts. Automaton has 5796 states and 20171 transitions. Word has length 47 [2021-08-21 12:33:03,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:03,629 INFO L470 AbstractCegarLoop]: Abstraction has 5796 states and 20171 transitions. [2021-08-21 12:33:03,629 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) [2021-08-21 12:33:03,629 INFO L276 IsEmpty]: Start isEmpty. Operand 5796 states and 20171 transitions. [2021-08-21 12:33:03,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:03,638 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:03,638 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:03,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-08-21 12:33:03,638 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:03,638 INFO L82 PathProgramCache]: Analyzing trace with hash -687165205, now seen corresponding path program 104 times [2021-08-21 12:33:03,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:03,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719867203] [2021-08-21 12:33:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:03,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:03,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:03,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719867203] [2021-08-21 12:33:03,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719867203] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:03,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:03,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:03,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509173335] [2021-08-21 12:33:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:03,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:03,918 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) [2021-08-21 12:33:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:04,957 INFO L93 Difference]: Finished difference Result 6498 states and 22498 transitions. [2021-08-21 12:33:04,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:33:04,957 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 [2021-08-21 12:33:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:04,971 INFO L225 Difference]: With dead ends: 6498 [2021-08-21 12:33:04,971 INFO L226 Difference]: Without dead ends: 6393 [2021-08-21 12:33:04,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 624.7ms TimeCoverageRelationStatistics Valid=148, Invalid=1334, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:33:04,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6393 states. [2021-08-21 12:33:05,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6393 to 5812. [2021-08-21 12:33:05,048 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) [2021-08-21 12:33:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5812 states to 5812 states and 20219 transitions. [2021-08-21 12:33:05,062 INFO L78 Accepts]: Start accepts. Automaton has 5812 states and 20219 transitions. Word has length 47 [2021-08-21 12:33:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:05,062 INFO L470 AbstractCegarLoop]: Abstraction has 5812 states and 20219 transitions. [2021-08-21 12:33:05,062 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) [2021-08-21 12:33:05,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5812 states and 20219 transitions. [2021-08-21 12:33:05,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:05,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:05,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:05,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-08-21 12:33:05,071 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:05,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:05,071 INFO L82 PathProgramCache]: Analyzing trace with hash 641532215, now seen corresponding path program 105 times [2021-08-21 12:33:05,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:05,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218595781] [2021-08-21 12:33:05,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:05,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:05,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:05,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:05,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218595781] [2021-08-21 12:33:05,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218595781] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:05,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:05,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:05,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090659340] [2021-08-21 12:33:05,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:05,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:05,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:05,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:05,389 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) [2021-08-21 12:33:06,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:06,444 INFO L93 Difference]: Finished difference Result 6391 states and 22171 transitions. [2021-08-21 12:33:06,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-08-21 12:33:06,445 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 [2021-08-21 12:33:06,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:06,457 INFO L225 Difference]: With dead ends: 6391 [2021-08-21 12:33:06,457 INFO L226 Difference]: Without dead ends: 6118 [2021-08-21 12:33:06,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 637.3ms TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 12:33:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6118 states. [2021-08-21 12:33:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6118 to 5684. [2021-08-21 12:33:06,531 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) [2021-08-21 12:33:06,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5684 states to 5684 states and 19827 transitions. [2021-08-21 12:33:06,543 INFO L78 Accepts]: Start accepts. Automaton has 5684 states and 19827 transitions. Word has length 47 [2021-08-21 12:33:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:06,544 INFO L470 AbstractCegarLoop]: Abstraction has 5684 states and 19827 transitions. [2021-08-21 12:33:06,544 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) [2021-08-21 12:33:06,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5684 states and 19827 transitions. [2021-08-21 12:33:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:06,552 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:06,552 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:06,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-08-21 12:33:06,552 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:06,552 INFO L82 PathProgramCache]: Analyzing trace with hash -162376707, now seen corresponding path program 106 times [2021-08-21 12:33:06,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:06,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237067035] [2021-08-21 12:33:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:06,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:06,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:06,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:06,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237067035] [2021-08-21 12:33:06,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237067035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:06,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:06,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:33:06,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983664825] [2021-08-21 12:33:06,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:33:06,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:06,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:33:06,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:33:06,848 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) [2021-08-21 12:33:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:07,991 INFO L93 Difference]: Finished difference Result 6651 states and 23069 transitions. [2021-08-21 12:33:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:33:07,992 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 [2021-08-21 12:33:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:08,007 INFO L225 Difference]: With dead ends: 6651 [2021-08-21 12:33:08,007 INFO L226 Difference]: Without dead ends: 6514 [2021-08-21 12:33:08,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 662.2ms TimeCoverageRelationStatistics Valid=157, Invalid=1325, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:33:08,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6514 states. [2021-08-21 12:33:08,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6514 to 5704. [2021-08-21 12:33:08,088 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) [2021-08-21 12:33:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19893 transitions. [2021-08-21 12:33:08,101 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19893 transitions. Word has length 47 [2021-08-21 12:33:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:08,101 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19893 transitions. [2021-08-21 12:33:08,102 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) [2021-08-21 12:33:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19893 transitions. [2021-08-21 12:33:08,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:08,110 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:08,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:08,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-08-21 12:33:08,110 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1355319515, now seen corresponding path program 107 times [2021-08-21 12:33:08,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:08,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934544755] [2021-08-21 12:33:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:08,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:08,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:08,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934544755] [2021-08-21 12:33:08,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934544755] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:08,459 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:08,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:08,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325356333] [2021-08-21 12:33:08,460 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:08,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:08,461 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) [2021-08-21 12:33:09,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:09,772 INFO L93 Difference]: Finished difference Result 6710 states and 23228 transitions. [2021-08-21 12:33:09,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 12:33:09,772 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 [2021-08-21 12:33:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:09,786 INFO L225 Difference]: With dead ends: 6710 [2021-08-21 12:33:09,787 INFO L226 Difference]: Without dead ends: 6621 [2021-08-21 12:33:09,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 788.6ms TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:33:09,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6621 states. [2021-08-21 12:33:09,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6621 to 5768. [2021-08-21 12:33:09,866 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) [2021-08-21 12:33:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20109 transitions. [2021-08-21 12:33:09,880 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20109 transitions. Word has length 47 [2021-08-21 12:33:09,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:09,880 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20109 transitions. [2021-08-21 12:33:09,880 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) [2021-08-21 12:33:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20109 transitions. [2021-08-21 12:33:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:09,889 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:09,889 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:09,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-08-21 12:33:09,889 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:09,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:09,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1789348861, now seen corresponding path program 108 times [2021-08-21 12:33:09,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:09,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588938048] [2021-08-21 12:33:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:09,889 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:10,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:10,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588938048] [2021-08-21 12:33:10,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588938048] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:10,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:10,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:10,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171300728] [2021-08-21 12:33:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:10,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:10,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:10,210 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) [2021-08-21 12:33:11,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:11,135 INFO L93 Difference]: Finished difference Result 6603 states and 22901 transitions. [2021-08-21 12:33:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:33:11,135 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 [2021-08-21 12:33:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:11,149 INFO L225 Difference]: With dead ends: 6603 [2021-08-21 12:33:11,149 INFO L226 Difference]: Without dead ends: 6474 [2021-08-21 12:33:11,149 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 566.6ms TimeCoverageRelationStatistics Valid=158, Invalid=1402, Unknown=0, NotChecked=0, Total=1560 [2021-08-21 12:33:11,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6474 states. [2021-08-21 12:33:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6474 to 5768. [2021-08-21 12:33:11,227 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) [2021-08-21 12:33:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2021-08-21 12:33:11,240 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2021-08-21 12:33:11,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:11,240 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2021-08-21 12:33:11,240 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) [2021-08-21 12:33:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2021-08-21 12:33:11,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:11,249 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:11,250 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:11,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-08-21 12:33:11,250 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:11,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:11,251 INFO L82 PathProgramCache]: Analyzing trace with hash -944184949, now seen corresponding path program 109 times [2021-08-21 12:33:11,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:11,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950358756] [2021-08-21 12:33:11,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:11,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:11,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:11,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950358756] [2021-08-21 12:33:11,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950358756] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:11,557 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:11,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685925390] [2021-08-21 12:33:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:11,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:11,558 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) [2021-08-21 12:33:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:12,433 INFO L93 Difference]: Finished difference Result 6758 states and 23404 transitions. [2021-08-21 12:33:12,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:33:12,433 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 [2021-08-21 12:33:12,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:12,448 INFO L225 Difference]: With dead ends: 6758 [2021-08-21 12:33:12,448 INFO L226 Difference]: Without dead ends: 6669 [2021-08-21 12:33:12,448 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 576.3ms TimeCoverageRelationStatistics Valid=189, Invalid=1703, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:33:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2021-08-21 12:33:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 5768. [2021-08-21 12:33:12,527 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) [2021-08-21 12:33:12,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5768 states to 5768 states and 20085 transitions. [2021-08-21 12:33:12,540 INFO L78 Accepts]: Start accepts. Automaton has 5768 states and 20085 transitions. Word has length 47 [2021-08-21 12:33:12,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:12,540 INFO L470 AbstractCegarLoop]: Abstraction has 5768 states and 20085 transitions. [2021-08-21 12:33:12,540 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) [2021-08-21 12:33:12,540 INFO L276 IsEmpty]: Start isEmpty. Operand 5768 states and 20085 transitions. [2021-08-21 12:33:12,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:12,549 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:12,549 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:12,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-08-21 12:33:12,549 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -510155603, now seen corresponding path program 110 times [2021-08-21 12:33:12,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:12,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799786494] [2021-08-21 12:33:12,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:12,550 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:12,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:12,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:12,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799786494] [2021-08-21 12:33:12,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799786494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:12,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:12,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:12,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466890678] [2021-08-21 12:33:12,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:12,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:12,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:12,827 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) [2021-08-21 12:33:13,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:13,916 INFO L93 Difference]: Finished difference Result 6750 states and 23376 transitions. [2021-08-21 12:33:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 12:33:13,916 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 [2021-08-21 12:33:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:13,930 INFO L225 Difference]: With dead ends: 6750 [2021-08-21 12:33:13,930 INFO L226 Difference]: Without dead ends: 6645 [2021-08-21 12:33:13,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 655.0ms TimeCoverageRelationStatistics Valid=175, Invalid=1547, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:33:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6645 states. [2021-08-21 12:33:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6645 to 5784. [2021-08-21 12:33:14,059 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) [2021-08-21 12:33:14,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20133 transitions. [2021-08-21 12:33:14,071 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20133 transitions. Word has length 47 [2021-08-21 12:33:14,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:14,071 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20133 transitions. [2021-08-21 12:33:14,071 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) [2021-08-21 12:33:14,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20133 transitions. [2021-08-21 12:33:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:14,081 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:14,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:14,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-08-21 12:33:14,081 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:14,081 INFO L82 PathProgramCache]: Analyzing trace with hash 762778105, now seen corresponding path program 111 times [2021-08-21 12:33:14,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:14,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643674012] [2021-08-21 12:33:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:14,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:14,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:14,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643674012] [2021-08-21 12:33:14,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643674012] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:14,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:14,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:14,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324422129] [2021-08-21 12:33:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:14,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:14,398 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) [2021-08-21 12:33:15,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:15,649 INFO L93 Difference]: Finished difference Result 6659 states and 23097 transitions. [2021-08-21 12:33:15,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:33:15,650 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 [2021-08-21 12:33:15,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:15,663 INFO L225 Difference]: With dead ends: 6659 [2021-08-21 12:33:15,663 INFO L226 Difference]: Without dead ends: 6434 [2021-08-21 12:33:15,664 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 739.5ms TimeCoverageRelationStatistics Valid=177, Invalid=1629, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:33:15,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6434 states. [2021-08-21 12:33:15,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6434 to 5704. [2021-08-21 12:33:15,738 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) [2021-08-21 12:33:15,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19877 transitions. [2021-08-21 12:33:15,751 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19877 transitions. Word has length 47 [2021-08-21 12:33:15,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:15,751 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19877 transitions. [2021-08-21 12:33:15,751 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) [2021-08-21 12:33:15,751 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19877 transitions. [2021-08-21 12:33:15,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:15,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:15,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:15,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-08-21 12:33:15,761 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:15,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:15,761 INFO L82 PathProgramCache]: Analyzing trace with hash -680438787, now seen corresponding path program 112 times [2021-08-21 12:33:15,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:15,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661828957] [2021-08-21 12:33:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:15,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:16,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:16,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661828957] [2021-08-21 12:33:16,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661828957] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:16,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:16,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:16,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759016735] [2021-08-21 12:33:16,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:16,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:16,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:16,083 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) [2021-08-21 12:33:17,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:17,392 INFO L93 Difference]: Finished difference Result 6699 states and 23157 transitions. [2021-08-21 12:33:17,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:33:17,393 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 [2021-08-21 12:33:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:17,406 INFO L225 Difference]: With dead ends: 6699 [2021-08-21 12:33:17,406 INFO L226 Difference]: Without dead ends: 6562 [2021-08-21 12:33:17,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 783.7ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:33:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6562 states. [2021-08-21 12:33:17,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6562 to 5710. [2021-08-21 12:33:17,480 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) [2021-08-21 12:33:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2021-08-21 12:33:17,492 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2021-08-21 12:33:17,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:17,492 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2021-08-21 12:33:17,492 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) [2021-08-21 12:33:17,492 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2021-08-21 12:33:17,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:17,500 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:17,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:17,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-08-21 12:33:17,500 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:17,500 INFO L82 PathProgramCache]: Analyzing trace with hash 837257435, now seen corresponding path program 113 times [2021-08-21 12:33:17,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:17,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340072276] [2021-08-21 12:33:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:17,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:17,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:17,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340072276] [2021-08-21 12:33:17,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340072276] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:17,835 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:17,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:17,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281055770] [2021-08-21 12:33:17,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:17,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:17,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:17,836 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) [2021-08-21 12:33:19,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:19,199 INFO L93 Difference]: Finished difference Result 6849 states and 23579 transitions. [2021-08-21 12:33:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-08-21 12:33:19,200 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 [2021-08-21 12:33:19,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:19,214 INFO L225 Difference]: With dead ends: 6849 [2021-08-21 12:33:19,214 INFO L226 Difference]: Without dead ends: 6760 [2021-08-21 12:33:19,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 837.0ms TimeCoverageRelationStatistics Valid=196, Invalid=1784, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 12:33:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6760 states. [2021-08-21 12:33:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6760 to 5710. [2021-08-21 12:33:19,296 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) [2021-08-21 12:33:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19898 transitions. [2021-08-21 12:33:19,312 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19898 transitions. Word has length 47 [2021-08-21 12:33:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:19,312 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19898 transitions. [2021-08-21 12:33:19,312 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) [2021-08-21 12:33:19,312 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19898 transitions. [2021-08-21 12:33:19,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:19,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:19,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:19,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-08-21 12:33:19,324 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:19,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:19,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1271286781, now seen corresponding path program 114 times [2021-08-21 12:33:19,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:19,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094000774] [2021-08-21 12:33:19,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:19,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:19,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:19,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094000774] [2021-08-21 12:33:19,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094000774] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:19,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:19,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:19,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254405655] [2021-08-21 12:33:19,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:19,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:19,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:19,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:19,670 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) [2021-08-21 12:33:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:20,895 INFO L93 Difference]: Finished difference Result 6742 states and 23252 transitions. [2021-08-21 12:33:20,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:33:20,895 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 [2021-08-21 12:33:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:20,911 INFO L225 Difference]: With dead ends: 6742 [2021-08-21 12:33:20,911 INFO L226 Difference]: Without dead ends: 6613 [2021-08-21 12:33:20,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 704.6ms TimeCoverageRelationStatistics Valid=176, Invalid=1630, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:33:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6613 states. [2021-08-21 12:33:20,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6613 to 5710. [2021-08-21 12:33:20,988 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) [2021-08-21 12:33:21,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5710 states to 5710 states and 19892 transitions. [2021-08-21 12:33:21,000 INFO L78 Accepts]: Start accepts. Automaton has 5710 states and 19892 transitions. Word has length 47 [2021-08-21 12:33:21,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:21,001 INFO L470 AbstractCegarLoop]: Abstraction has 5710 states and 19892 transitions. [2021-08-21 12:33:21,001 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) [2021-08-21 12:33:21,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5710 states and 19892 transitions. [2021-08-21 12:33:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:21,009 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:21,009 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:21,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-08-21 12:33:21,010 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash -514253669, now seen corresponding path program 115 times [2021-08-21 12:33:21,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:21,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756483387] [2021-08-21 12:33:21,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:21,010 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:21,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:21,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756483387] [2021-08-21 12:33:21,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756483387] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:21,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:21,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:33:21,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662976055] [2021-08-21 12:33:21,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:33:21,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:33:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:33:21,342 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) [2021-08-21 12:33:24,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:24,063 INFO L93 Difference]: Finished difference Result 8507 states and 29627 transitions. [2021-08-21 12:33:24,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 12:33:24,064 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 [2021-08-21 12:33:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:24,081 INFO L225 Difference]: With dead ends: 8507 [2021-08-21 12:33:24,082 INFO L226 Difference]: Without dead ends: 8370 [2021-08-21 12:33:24,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 1395.2ms TimeCoverageRelationStatistics Valid=324, Invalid=2982, Unknown=0, NotChecked=0, Total=3306 [2021-08-21 12:33:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8370 states. [2021-08-21 12:33:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8370 to 5756. [2021-08-21 12:33:24,168 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) [2021-08-21 12:33:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20027 transitions. [2021-08-21 12:33:24,181 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20027 transitions. Word has length 47 [2021-08-21 12:33:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:24,181 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 20027 transitions. [2021-08-21 12:33:24,181 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) [2021-08-21 12:33:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20027 transitions. [2021-08-21 12:33:24,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:24,190 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:24,190 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:24,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-08-21 12:33:24,190 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:24,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:24,190 INFO L82 PathProgramCache]: Analyzing trace with hash -527785091, now seen corresponding path program 116 times [2021-08-21 12:33:24,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:24,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407458105] [2021-08-21 12:33:24,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:24,190 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:24,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:24,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407458105] [2021-08-21 12:33:24,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407458105] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:24,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:24,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:24,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734803297] [2021-08-21 12:33:24,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:24,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:24,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:24,523 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) [2021-08-21 12:33:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:27,393 INFO L93 Difference]: Finished difference Result 9839 states and 34481 transitions. [2021-08-21 12:33:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-08-21 12:33:27,393 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 [2021-08-21 12:33:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:27,441 INFO L225 Difference]: With dead ends: 9839 [2021-08-21 12:33:27,442 INFO L226 Difference]: Without dead ends: 9750 [2021-08-21 12:33:27,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 1538.0ms TimeCoverageRelationStatistics Valid=396, Invalid=3636, Unknown=0, NotChecked=0, Total=4032 [2021-08-21 12:33:27,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9750 states. [2021-08-21 12:33:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9750 to 5760. [2021-08-21 12:33:27,540 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) [2021-08-21 12:33:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 20035 transitions. [2021-08-21 12:33:27,553 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 20035 transitions. Word has length 47 [2021-08-21 12:33:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:27,553 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 20035 transitions. [2021-08-21 12:33:27,553 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) [2021-08-21 12:33:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 20035 transitions. [2021-08-21 12:33:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:27,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:27,562 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:27,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-08-21 12:33:27,563 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1378436999, now seen corresponding path program 117 times [2021-08-21 12:33:27,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:27,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632790445] [2021-08-21 12:33:27,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:27,563 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:27,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:27,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632790445] [2021-08-21 12:33:27,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632790445] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:27,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:27,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:27,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67689136] [2021-08-21 12:33:27,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:27,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:27,923 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) [2021-08-21 12:33:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:30,859 INFO L93 Difference]: Finished difference Result 10426 states and 36871 transitions. [2021-08-21 12:33:30,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 12:33:30,859 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 [2021-08-21 12:33:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:30,882 INFO L225 Difference]: With dead ends: 10426 [2021-08-21 12:33:30,883 INFO L226 Difference]: Without dead ends: 10319 [2021-08-21 12:33:30,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1289 ImplicationChecksByTransitivity, 1609.1ms TimeCoverageRelationStatistics Valid=419, Invalid=4273, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 12:33:30,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10319 states. [2021-08-21 12:33:30,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10319 to 5718. [2021-08-21 12:33:30,986 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) [2021-08-21 12:33:30,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 19910 transitions. [2021-08-21 12:33:30,998 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 19910 transitions. Word has length 47 [2021-08-21 12:33:30,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:30,998 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 19910 transitions. [2021-08-21 12:33:30,998 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) [2021-08-21 12:33:30,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 19910 transitions. [2021-08-21 12:33:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:31,007 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:31,007 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:31,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-08-21 12:33:31,007 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:31,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1477803139, now seen corresponding path program 118 times [2021-08-21 12:33:31,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:31,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465698002] [2021-08-21 12:33:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:31,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:31,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:31,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465698002] [2021-08-21 12:33:31,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465698002] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:31,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:31,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:31,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346035864] [2021-08-21 12:33:31,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:31,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:31,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:31,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:31,387 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) [2021-08-21 12:33:32,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:32,618 INFO L93 Difference]: Finished difference Result 6910 states and 23771 transitions. [2021-08-21 12:33:32,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 12:33:32,618 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 [2021-08-21 12:33:32,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:32,632 INFO L225 Difference]: With dead ends: 6910 [2021-08-21 12:33:32,632 INFO L226 Difference]: Without dead ends: 6821 [2021-08-21 12:33:32,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 777.2ms TimeCoverageRelationStatistics Valid=211, Invalid=1951, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:33:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-08-21 12:33:32,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5720. [2021-08-21 12:33:32,703 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) [2021-08-21 12:33:32,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19917 transitions. [2021-08-21 12:33:32,714 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19917 transitions. Word has length 47 [2021-08-21 12:33:32,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:32,714 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19917 transitions. [2021-08-21 12:33:32,714 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) [2021-08-21 12:33:32,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19917 transitions. [2021-08-21 12:33:32,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:32,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:32,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:32,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-08-21 12:33:32,723 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:32,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:32,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1801464963, now seen corresponding path program 119 times [2021-08-21 12:33:32,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:32,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059996079] [2021-08-21 12:33:32,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:32,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:33,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:33,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059996079] [2021-08-21 12:33:33,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059996079] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:33,010 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:33,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:33,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579579238] [2021-08-21 12:33:33,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:33,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:33,013 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) [2021-08-21 12:33:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:34,338 INFO L93 Difference]: Finished difference Result 6902 states and 23743 transitions. [2021-08-21 12:33:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:33:34,338 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 [2021-08-21 12:33:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:34,356 INFO L225 Difference]: With dead ends: 6902 [2021-08-21 12:33:34,356 INFO L226 Difference]: Without dead ends: 6797 [2021-08-21 12:33:34,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 775.8ms TimeCoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 12:33:34,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-08-21 12:33:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5720. [2021-08-21 12:33:34,434 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) [2021-08-21 12:33:34,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19915 transitions. [2021-08-21 12:33:34,446 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19915 transitions. Word has length 47 [2021-08-21 12:33:34,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:34,446 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19915 transitions. [2021-08-21 12:33:34,446 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) [2021-08-21 12:33:34,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19915 transitions. [2021-08-21 12:33:34,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:34,455 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:34,455 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:34,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-08-21 12:33:34,455 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:34,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:34,455 INFO L82 PathProgramCache]: Analyzing trace with hash 868735899, now seen corresponding path program 120 times [2021-08-21 12:33:34,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:34,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995101099] [2021-08-21 12:33:34,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:34,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:34,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:34,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:34,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995101099] [2021-08-21 12:33:34,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995101099] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:34,791 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:34,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:34,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846617658] [2021-08-21 12:33:34,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:34,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:34,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:34,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:34,792 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) [2021-08-21 12:33:36,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:36,918 INFO L93 Difference]: Finished difference Result 8513 states and 29532 transitions. [2021-08-21 12:33:36,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-08-21 12:33:36,918 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 [2021-08-21 12:33:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:36,937 INFO L225 Difference]: With dead ends: 8513 [2021-08-21 12:33:36,937 INFO L226 Difference]: Without dead ends: 8424 [2021-08-21 12:33:36,937 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 1180.0ms TimeCoverageRelationStatistics Valid=315, Invalid=3107, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 12:33:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8424 states. [2021-08-21 12:33:37,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8424 to 5824. [2021-08-21 12:33:37,037 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) [2021-08-21 12:33:37,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20251 transitions. [2021-08-21 12:33:37,049 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20251 transitions. Word has length 47 [2021-08-21 12:33:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:37,049 INFO L470 AbstractCegarLoop]: Abstraction has 5824 states and 20251 transitions. [2021-08-21 12:33:37,050 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) [2021-08-21 12:33:37,050 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20251 transitions. [2021-08-21 12:33:37,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:37,058 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:37,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:37,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-08-21 12:33:37,058 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:37,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:37,058 INFO L82 PathProgramCache]: Analyzing trace with hash 93618297, now seen corresponding path program 121 times [2021-08-21 12:33:37,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:37,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113226978] [2021-08-21 12:33:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:37,059 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:37,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:37,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:37,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113226978] [2021-08-21 12:33:37,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113226978] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:37,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:37,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:37,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76284168] [2021-08-21 12:33:37,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:37,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:37,426 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) [2021-08-21 12:33:38,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:38,867 INFO L93 Difference]: Finished difference Result 7385 states and 25458 transitions. [2021-08-21 12:33:38,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-08-21 12:33:38,867 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 [2021-08-21 12:33:38,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:38,882 INFO L225 Difference]: With dead ends: 7385 [2021-08-21 12:33:38,882 INFO L226 Difference]: Without dead ends: 7290 [2021-08-21 12:33:38,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 845.1ms TimeCoverageRelationStatistics Valid=231, Invalid=2219, Unknown=0, NotChecked=0, Total=2450 [2021-08-21 12:33:38,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2021-08-21 12:33:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 5804. [2021-08-21 12:33:38,960 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) [2021-08-21 12:33:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20207 transitions. [2021-08-21 12:33:38,972 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20207 transitions. Word has length 47 [2021-08-21 12:33:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:38,972 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 20207 transitions. [2021-08-21 12:33:38,972 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) [2021-08-21 12:33:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20207 transitions. [2021-08-21 12:33:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:38,980 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:38,980 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:38,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-08-21 12:33:38,981 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:38,981 INFO L82 PathProgramCache]: Analyzing trace with hash 392509975, now seen corresponding path program 122 times [2021-08-21 12:33:38,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:38,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250898766] [2021-08-21 12:33:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:38,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:39,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:39,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250898766] [2021-08-21 12:33:39,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250898766] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:39,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:39,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:39,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491449756] [2021-08-21 12:33:39,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:39,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:39,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:39,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:39,265 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) [2021-08-21 12:33:40,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:40,529 INFO L93 Difference]: Finished difference Result 6867 states and 23666 transitions. [2021-08-21 12:33:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:33:40,529 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 [2021-08-21 12:33:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:40,544 INFO L225 Difference]: With dead ends: 6867 [2021-08-21 12:33:40,545 INFO L226 Difference]: Without dead ends: 6770 [2021-08-21 12:33:40,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 728.1ms TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:33:40,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6770 states. [2021-08-21 12:33:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6770 to 5818. [2021-08-21 12:33:40,627 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) [2021-08-21 12:33:40,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5818 states to 5818 states and 20234 transitions. [2021-08-21 12:33:40,639 INFO L78 Accepts]: Start accepts. Automaton has 5818 states and 20234 transitions. Word has length 47 [2021-08-21 12:33:40,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:40,639 INFO L470 AbstractCegarLoop]: Abstraction has 5818 states and 20234 transitions. [2021-08-21 12:33:40,640 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) [2021-08-21 12:33:40,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5818 states and 20234 transitions. [2021-08-21 12:33:40,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:40,648 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:40,648 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:40,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-08-21 12:33:40,648 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:40,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:40,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1332910535, now seen corresponding path program 123 times [2021-08-21 12:33:40,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:40,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605092679] [2021-08-21 12:33:40,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:40,649 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:41,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:41,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605092679] [2021-08-21 12:33:41,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605092679] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:41,058 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:41,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:41,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731702233] [2021-08-21 12:33:41,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:41,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:41,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:41,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:41,059 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) [2021-08-21 12:33:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:42,259 INFO L93 Difference]: Finished difference Result 6843 states and 23576 transitions. [2021-08-21 12:33:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:33:42,260 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 [2021-08-21 12:33:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:42,274 INFO L225 Difference]: With dead ends: 6843 [2021-08-21 12:33:42,274 INFO L226 Difference]: Without dead ends: 6738 [2021-08-21 12:33:42,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 766.7ms TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:33:42,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6738 states. [2021-08-21 12:33:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6738 to 5804. [2021-08-21 12:33:42,360 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) [2021-08-21 12:33:42,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5804 states to 5804 states and 20201 transitions. [2021-08-21 12:33:42,373 INFO L78 Accepts]: Start accepts. Automaton has 5804 states and 20201 transitions. Word has length 47 [2021-08-21 12:33:42,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:42,373 INFO L470 AbstractCegarLoop]: Abstraction has 5804 states and 20201 transitions. [2021-08-21 12:33:42,373 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) [2021-08-21 12:33:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 5804 states and 20201 transitions. [2021-08-21 12:33:42,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:42,382 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:42,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:42,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-08-21 12:33:42,384 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:42,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:42,384 INFO L82 PathProgramCache]: Analyzing trace with hash 986657209, now seen corresponding path program 124 times [2021-08-21 12:33:42,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:42,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776546947] [2021-08-21 12:33:42,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:42,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:42,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:42,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776546947] [2021-08-21 12:33:42,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776546947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:42,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:42,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:42,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563553555] [2021-08-21 12:33:42,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:42,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:42,677 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) [2021-08-21 12:33:43,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:43,951 INFO L93 Difference]: Finished difference Result 6770 states and 23436 transitions. [2021-08-21 12:33:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 12:33:43,951 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 [2021-08-21 12:33:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:43,965 INFO L225 Difference]: With dead ends: 6770 [2021-08-21 12:33:43,965 INFO L226 Difference]: Without dead ends: 6681 [2021-08-21 12:33:43,965 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 825.8ms TimeCoverageRelationStatistics Valid=212, Invalid=1950, Unknown=0, NotChecked=0, Total=2162 [2021-08-21 12:33:43,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6681 states. [2021-08-21 12:33:44,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6681 to 5808. [2021-08-21 12:33:44,039 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) [2021-08-21 12:33:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20215 transitions. [2021-08-21 12:33:44,052 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20215 transitions. Word has length 47 [2021-08-21 12:33:44,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:44,052 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 20215 transitions. [2021-08-21 12:33:44,052 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) [2021-08-21 12:33:44,052 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20215 transitions. [2021-08-21 12:33:44,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:44,061 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:44,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:44,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-08-21 12:33:44,061 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:44,061 INFO L82 PathProgramCache]: Analyzing trace with hash 662995385, now seen corresponding path program 125 times [2021-08-21 12:33:44,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:44,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376632207] [2021-08-21 12:33:44,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:44,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:44,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:44,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:44,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376632207] [2021-08-21 12:33:44,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376632207] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:44,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:44,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:44,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696185739] [2021-08-21 12:33:44,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:44,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:44,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:44,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:44,389 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) [2021-08-21 12:33:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:45,790 INFO L93 Difference]: Finished difference Result 6762 states and 23408 transitions. [2021-08-21 12:33:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:33:45,790 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 [2021-08-21 12:33:45,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:45,806 INFO L225 Difference]: With dead ends: 6762 [2021-08-21 12:33:45,806 INFO L226 Difference]: Without dead ends: 6657 [2021-08-21 12:33:45,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 874.8ms TimeCoverageRelationStatistics Valid=200, Invalid=1780, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 12:33:45,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6657 states. [2021-08-21 12:33:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6657 to 5824. [2021-08-21 12:33:45,892 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) [2021-08-21 12:33:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5824 states to 5824 states and 20263 transitions. [2021-08-21 12:33:45,905 INFO L78 Accepts]: Start accepts. Automaton has 5824 states and 20263 transitions. Word has length 47 [2021-08-21 12:33:45,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:45,905 INFO L470 AbstractCegarLoop]: Abstraction has 5824 states and 20263 transitions. [2021-08-21 12:33:45,905 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) [2021-08-21 12:33:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5824 states and 20263 transitions. [2021-08-21 12:33:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:45,913 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:45,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:45,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-08-21 12:33:45,914 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:45,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:45,914 INFO L82 PathProgramCache]: Analyzing trace with hash 719106839, now seen corresponding path program 126 times [2021-08-21 12:33:45,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:45,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66778015] [2021-08-21 12:33:45,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:45,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:46,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:46,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66778015] [2021-08-21 12:33:46,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66778015] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:46,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:46,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:46,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693360902] [2021-08-21 12:33:46,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:46,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:46,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:46,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:46,263 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) [2021-08-21 12:33:47,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:47,725 INFO L93 Difference]: Finished difference Result 6731 states and 23345 transitions. [2021-08-21 12:33:47,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 12:33:47,726 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 [2021-08-21 12:33:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:47,740 INFO L225 Difference]: With dead ends: 6731 [2021-08-21 12:33:47,740 INFO L226 Difference]: Without dead ends: 6570 [2021-08-21 12:33:47,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 907.5ms TimeCoverageRelationStatistics Valid=222, Invalid=2034, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 12:33:47,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6570 states. [2021-08-21 12:33:47,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6570 to 5808. [2021-08-21 12:33:47,817 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) [2021-08-21 12:33:47,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 20211 transitions. [2021-08-21 12:33:47,829 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 20211 transitions. Word has length 47 [2021-08-21 12:33:47,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:47,829 INFO L470 AbstractCegarLoop]: Abstraction has 5808 states and 20211 transitions. [2021-08-21 12:33:47,829 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) [2021-08-21 12:33:47,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 20211 transitions. [2021-08-21 12:33:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:47,838 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:47,838 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:47,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-08-21 12:33:47,839 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash 869165467, now seen corresponding path program 127 times [2021-08-21 12:33:47,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:47,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274626192] [2021-08-21 12:33:47,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:47,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:48,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:48,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274626192] [2021-08-21 12:33:48,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274626192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:48,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:48,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:48,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004346481] [2021-08-21 12:33:48,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:48,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:48,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:48,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:48,173 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) [2021-08-21 12:33:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:49,594 INFO L93 Difference]: Finished difference Result 6910 states and 23799 transitions. [2021-08-21 12:33:49,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-08-21 12:33:49,594 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 [2021-08-21 12:33:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:49,609 INFO L225 Difference]: With dead ends: 6910 [2021-08-21 12:33:49,609 INFO L226 Difference]: Without dead ends: 6821 [2021-08-21 12:33:49,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 875.6ms TimeCoverageRelationStatistics Valid=202, Invalid=1868, Unknown=0, NotChecked=0, Total=2070 [2021-08-21 12:33:49,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6821 states. [2021-08-21 12:33:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6821 to 5810. [2021-08-21 12:33:49,748 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) [2021-08-21 12:33:49,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20218 transitions. [2021-08-21 12:33:49,761 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20218 transitions. Word has length 47 [2021-08-21 12:33:49,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:49,761 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 20218 transitions. [2021-08-21 12:33:49,761 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) [2021-08-21 12:33:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20218 transitions. [2021-08-21 12:33:49,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:49,770 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:49,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:49,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-08-21 12:33:49,770 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:49,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:49,770 INFO L82 PathProgramCache]: Analyzing trace with hash 545503643, now seen corresponding path program 128 times [2021-08-21 12:33:49,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:49,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532464620] [2021-08-21 12:33:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:49,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:50,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:50,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532464620] [2021-08-21 12:33:50,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532464620] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:50,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:50,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:50,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701194401] [2021-08-21 12:33:50,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:50,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:50,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:50,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:50,108 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) [2021-08-21 12:33:51,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:51,405 INFO L93 Difference]: Finished difference Result 6902 states and 23771 transitions. [2021-08-21 12:33:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-08-21 12:33:51,405 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 [2021-08-21 12:33:51,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:51,420 INFO L225 Difference]: With dead ends: 6902 [2021-08-21 12:33:51,420 INFO L226 Difference]: Without dead ends: 6797 [2021-08-21 12:33:51,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 830.0ms TimeCoverageRelationStatistics Valid=195, Invalid=1785, Unknown=0, NotChecked=0, Total=1980 [2021-08-21 12:33:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6797 states. [2021-08-21 12:33:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6797 to 5810. [2021-08-21 12:33:51,502 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) [2021-08-21 12:33:51,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5810 states to 5810 states and 20216 transitions. [2021-08-21 12:33:51,515 INFO L78 Accepts]: Start accepts. Automaton has 5810 states and 20216 transitions. Word has length 47 [2021-08-21 12:33:51,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:51,515 INFO L470 AbstractCegarLoop]: Abstraction has 5810 states and 20216 transitions. [2021-08-21 12:33:51,515 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) [2021-08-21 12:33:51,515 INFO L276 IsEmpty]: Start isEmpty. Operand 5810 states and 20216 transitions. [2021-08-21 12:33:51,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:51,524 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:51,524 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:51,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-08-21 12:33:51,525 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:51,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:51,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1079262791, now seen corresponding path program 129 times [2021-08-21 12:33:51,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:51,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652453651] [2021-08-21 12:33:51,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:51,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:51,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:51,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652453651] [2021-08-21 12:33:51,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652453651] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:51,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:51,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:51,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062282742] [2021-08-21 12:33:51,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:51,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:51,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:51,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:51,863 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) [2021-08-21 12:33:54,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:54,094 INFO L93 Difference]: Finished difference Result 7949 states and 27657 transitions. [2021-08-21 12:33:54,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 12:33:54,095 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 [2021-08-21 12:33:54,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:54,111 INFO L225 Difference]: With dead ends: 7949 [2021-08-21 12:33:54,111 INFO L226 Difference]: Without dead ends: 7844 [2021-08-21 12:33:54,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 1253.3ms TimeCoverageRelationStatistics Valid=310, Invalid=3112, Unknown=0, NotChecked=0, Total=3422 [2021-08-21 12:33:54,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-08-21 12:33:54,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 5756. [2021-08-21 12:33:54,196 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) [2021-08-21 12:33:54,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5756 states to 5756 states and 20029 transitions. [2021-08-21 12:33:54,209 INFO L78 Accepts]: Start accepts. Automaton has 5756 states and 20029 transitions. Word has length 47 [2021-08-21 12:33:54,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:54,209 INFO L470 AbstractCegarLoop]: Abstraction has 5756 states and 20029 transitions. [2021-08-21 12:33:54,209 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) [2021-08-21 12:33:54,210 INFO L276 IsEmpty]: Start isEmpty. Operand 5756 states and 20029 transitions. [2021-08-21 12:33:54,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:54,218 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:54,218 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:54,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-08-21 12:33:54,218 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:54,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:54,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1854380393, now seen corresponding path program 130 times [2021-08-21 12:33:54,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:54,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824322008] [2021-08-21 12:33:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:54,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:54,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:54,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824322008] [2021-08-21 12:33:54,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824322008] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:54,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:54,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:54,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632105839] [2021-08-21 12:33:54,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:54,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:54,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:54,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:54,519 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) [2021-08-21 12:33:56,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:56,361 INFO L93 Difference]: Finished difference Result 7705 states and 26697 transitions. [2021-08-21 12:33:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-08-21 12:33:56,362 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 [2021-08-21 12:33:56,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:56,379 INFO L225 Difference]: With dead ends: 7705 [2021-08-21 12:33:56,379 INFO L226 Difference]: Without dead ends: 7610 [2021-08-21 12:33:56,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 611 ImplicationChecksByTransitivity, 993.4ms TimeCoverageRelationStatistics Valid=258, Invalid=2498, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 12:33:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2021-08-21 12:33:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 5724. [2021-08-21 12:33:56,461 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) [2021-08-21 12:33:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19929 transitions. [2021-08-21 12:33:56,473 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19929 transitions. Word has length 47 [2021-08-21 12:33:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:56,473 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 19929 transitions. [2021-08-21 12:33:56,473 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) [2021-08-21 12:33:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19929 transitions. [2021-08-21 12:33:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:56,482 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:56,482 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:56,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-08-21 12:33:56,482 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:56,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:56,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1555488715, now seen corresponding path program 131 times [2021-08-21 12:33:56,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:56,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892629247] [2021-08-21 12:33:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:56,482 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:56,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:56,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892629247] [2021-08-21 12:33:56,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892629247] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:56,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:56,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:56,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176515625] [2021-08-21 12:33:56,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:56,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:56,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:56,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:56,810 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) [2021-08-21 12:33:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:58,062 INFO L93 Difference]: Finished difference Result 6814 states and 23479 transitions. [2021-08-21 12:33:58,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-08-21 12:33:58,062 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 [2021-08-21 12:33:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:58,077 INFO L225 Difference]: With dead ends: 6814 [2021-08-21 12:33:58,077 INFO L226 Difference]: Without dead ends: 6717 [2021-08-21 12:33:58,077 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 764.9ms TimeCoverageRelationStatistics Valid=183, Invalid=1709, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:33:58,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2021-08-21 12:33:58,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 5732. [2021-08-21 12:33:58,157 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) [2021-08-21 12:33:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5732 states to 5732 states and 19947 transitions. [2021-08-21 12:33:58,169 INFO L78 Accepts]: Start accepts. Automaton has 5732 states and 19947 transitions. Word has length 47 [2021-08-21 12:33:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:58,169 INFO L470 AbstractCegarLoop]: Abstraction has 5732 states and 19947 transitions. [2021-08-21 12:33:58,170 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) [2021-08-21 12:33:58,170 INFO L276 IsEmpty]: Start isEmpty. Operand 5732 states and 19947 transitions. [2021-08-21 12:33:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:58,179 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:58,179 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:58,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-08-21 12:33:58,179 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:58,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:58,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1014058071, now seen corresponding path program 132 times [2021-08-21 12:33:58,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:58,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077346305] [2021-08-21 12:33:58,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:58,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:33:58,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:33:58,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:33:58,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077346305] [2021-08-21 12:33:58,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077346305] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:33:58,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:33:58,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:33:58,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335924249] [2021-08-21 12:33:58,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:33:58,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:33:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:33:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:33:58,510 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) [2021-08-21 12:33:59,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:33:59,749 INFO L93 Difference]: Finished difference Result 6790 states and 23389 transitions. [2021-08-21 12:33:59,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-08-21 12:33:59,749 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 [2021-08-21 12:33:59,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:33:59,763 INFO L225 Difference]: With dead ends: 6790 [2021-08-21 12:33:59,763 INFO L226 Difference]: Without dead ends: 6691 [2021-08-21 12:33:59,763 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 709.9ms TimeCoverageRelationStatistics Valid=173, Invalid=1633, Unknown=0, NotChecked=0, Total=1806 [2021-08-21 12:33:59,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6691 states. [2021-08-21 12:33:59,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6691 to 5724. [2021-08-21 12:33:59,841 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) [2021-08-21 12:33:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5724 states to 5724 states and 19927 transitions. [2021-08-21 12:33:59,854 INFO L78 Accepts]: Start accepts. Automaton has 5724 states and 19927 transitions. Word has length 47 [2021-08-21 12:33:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:33:59,854 INFO L470 AbstractCegarLoop]: Abstraction has 5724 states and 19927 transitions. [2021-08-21 12:33:59,855 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) [2021-08-21 12:33:59,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5724 states and 19927 transitions. [2021-08-21 12:33:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:33:59,863 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:33:59,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:33:59,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-08-21 12:33:59,863 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:33:59,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:33:59,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2089802635, now seen corresponding path program 133 times [2021-08-21 12:33:59,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:33:59,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041157175] [2021-08-21 12:33:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:33:59,864 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:33:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:00,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:00,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041157175] [2021-08-21 12:34:00,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041157175] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:00,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:00,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:00,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740731126] [2021-08-21 12:34:00,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:00,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:00,176 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) [2021-08-21 12:34:01,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:01,512 INFO L93 Difference]: Finished difference Result 6545 states and 22710 transitions. [2021-08-21 12:34:01,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-08-21 12:34:01,513 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 [2021-08-21 12:34:01,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:01,528 INFO L225 Difference]: With dead ends: 6545 [2021-08-21 12:34:01,528 INFO L226 Difference]: Without dead ends: 6400 [2021-08-21 12:34:01,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 790.7ms TimeCoverageRelationStatistics Valid=185, Invalid=1707, Unknown=0, NotChecked=0, Total=1892 [2021-08-21 12:34:01,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2021-08-21 12:34:01,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 5736. [2021-08-21 12:34:01,691 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) [2021-08-21 12:34:01,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 19957 transitions. [2021-08-21 12:34:01,704 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 19957 transitions. Word has length 47 [2021-08-21 12:34:01,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:01,704 INFO L470 AbstractCegarLoop]: Abstraction has 5736 states and 19957 transitions. [2021-08-21 12:34:01,705 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) [2021-08-21 12:34:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 19957 transitions. [2021-08-21 12:34:01,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:01,713 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:01,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:01,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-08-21 12:34:01,713 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 146349929, now seen corresponding path program 134 times [2021-08-21 12:34:01,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:01,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106187846] [2021-08-21 12:34:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:01,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:02,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:02,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106187846] [2021-08-21 12:34:02,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106187846] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:02,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:02,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:02,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535208294] [2021-08-21 12:34:02,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:02,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:02,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:02,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:02,051 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) [2021-08-21 12:34:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:03,235 INFO L93 Difference]: Finished difference Result 6665 states and 23013 transitions. [2021-08-21 12:34:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:34:03,235 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 [2021-08-21 12:34:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:03,250 INFO L225 Difference]: With dead ends: 6665 [2021-08-21 12:34:03,250 INFO L226 Difference]: Without dead ends: 6568 [2021-08-21 12:34:03,250 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 723.1ms TimeCoverageRelationStatistics Valid=167, Invalid=1555, Unknown=0, NotChecked=0, Total=1722 [2021-08-21 12:34:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6568 states. [2021-08-21 12:34:03,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6568 to 5742. [2021-08-21 12:34:03,324 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) [2021-08-21 12:34:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 19972 transitions. [2021-08-21 12:34:03,337 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 19972 transitions. Word has length 47 [2021-08-21 12:34:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:03,337 INFO L470 AbstractCegarLoop]: Abstraction has 5742 states and 19972 transitions. [2021-08-21 12:34:03,337 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) [2021-08-21 12:34:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 19972 transitions. [2021-08-21 12:34:03,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:03,345 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:03,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:03,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-08-21 12:34:03,346 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:03,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1579070581, now seen corresponding path program 135 times [2021-08-21 12:34:03,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:03,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210357662] [2021-08-21 12:34:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:03,346 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:03,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:03,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210357662] [2021-08-21 12:34:03,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210357662] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:03,671 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:03,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:03,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230897926] [2021-08-21 12:34:03,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:03,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:03,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:03,672 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) [2021-08-21 12:34:04,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:04,882 INFO L93 Difference]: Finished difference Result 6566 states and 22708 transitions. [2021-08-21 12:34:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-08-21 12:34:04,882 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 [2021-08-21 12:34:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:04,895 INFO L225 Difference]: With dead ends: 6566 [2021-08-21 12:34:04,895 INFO L226 Difference]: Without dead ends: 6437 [2021-08-21 12:34:04,896 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 692.3ms TimeCoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:34:04,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6437 states. [2021-08-21 12:34:04,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6437 to 5704. [2021-08-21 12:34:04,964 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) [2021-08-21 12:34:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 19883 transitions. [2021-08-21 12:34:04,976 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 19883 transitions. Word has length 47 [2021-08-21 12:34:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:04,976 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 19883 transitions. [2021-08-21 12:34:04,976 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) [2021-08-21 12:34:04,976 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 19883 transitions. [2021-08-21 12:34:04,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:04,985 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:04,985 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:04,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-08-21 12:34:04,985 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:04,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:04,985 INFO L82 PathProgramCache]: Analyzing trace with hash 252406523, now seen corresponding path program 136 times [2021-08-21 12:34:04,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:04,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366787628] [2021-08-21 12:34:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:04,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:05,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:05,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366787628] [2021-08-21 12:34:05,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366787628] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:05,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:05,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:34:05,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956940352] [2021-08-21 12:34:05,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:34:05,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:34:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:34:05,279 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) [2021-08-21 12:34:06,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:06,345 INFO L93 Difference]: Finished difference Result 6483 states and 22479 transitions. [2021-08-21 12:34:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:34:06,345 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 [2021-08-21 12:34:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:06,358 INFO L225 Difference]: With dead ends: 6483 [2021-08-21 12:34:06,359 INFO L226 Difference]: Without dead ends: 6346 [2021-08-21 12:34:06,359 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 643.8ms TimeCoverageRelationStatistics Valid=151, Invalid=1255, Unknown=0, NotChecked=0, Total=1406 [2021-08-21 12:34:06,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2021-08-21 12:34:06,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5720. [2021-08-21 12:34:06,431 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) [2021-08-21 12:34:06,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5720 states to 5720 states and 19931 transitions. [2021-08-21 12:34:06,444 INFO L78 Accepts]: Start accepts. Automaton has 5720 states and 19931 transitions. Word has length 47 [2021-08-21 12:34:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:06,444 INFO L470 AbstractCegarLoop]: Abstraction has 5720 states and 19931 transitions. [2021-08-21 12:34:06,444 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) [2021-08-21 12:34:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5720 states and 19931 transitions. [2021-08-21 12:34:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:06,452 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:06,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:06,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-08-21 12:34:06,453 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:06,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:06,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1770102745, now seen corresponding path program 137 times [2021-08-21 12:34:06,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:06,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324589416] [2021-08-21 12:34:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:06,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:06,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:06,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324589416] [2021-08-21 12:34:06,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324589416] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:06,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:06,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:06,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742638826] [2021-08-21 12:34:06,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:06,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:06,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:06,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:06,761 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) [2021-08-21 12:34:07,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:07,967 INFO L93 Difference]: Finished difference Result 6542 states and 22638 transitions. [2021-08-21 12:34:07,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-08-21 12:34:07,967 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 [2021-08-21 12:34:07,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:07,981 INFO L225 Difference]: With dead ends: 6542 [2021-08-21 12:34:07,981 INFO L226 Difference]: Without dead ends: 6453 [2021-08-21 12:34:07,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 716.5ms TimeCoverageRelationStatistics Valid=167, Invalid=1473, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:34:07,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6453 states. [2021-08-21 12:34:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6453 to 5784. [2021-08-21 12:34:08,055 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) [2021-08-21 12:34:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20147 transitions. [2021-08-21 12:34:08,068 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20147 transitions. Word has length 47 [2021-08-21 12:34:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:08,069 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20147 transitions. [2021-08-21 12:34:08,069 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) [2021-08-21 12:34:08,069 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20147 transitions. [2021-08-21 12:34:08,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:08,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:08,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:08,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-08-21 12:34:08,078 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:08,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:08,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2090835205, now seen corresponding path program 138 times [2021-08-21 12:34:08,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:08,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062006922] [2021-08-21 12:34:08,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:08,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:08,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:08,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062006922] [2021-08-21 12:34:08,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062006922] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:08,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:08,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:08,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191427285] [2021-08-21 12:34:08,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:08,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:08,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:08,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:08,389 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) [2021-08-21 12:34:09,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:09,446 INFO L93 Difference]: Finished difference Result 6435 states and 22311 transitions. [2021-08-21 12:34:09,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-08-21 12:34:09,446 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 [2021-08-21 12:34:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:09,460 INFO L225 Difference]: With dead ends: 6435 [2021-08-21 12:34:09,460 INFO L226 Difference]: Without dead ends: 6306 [2021-08-21 12:34:09,460 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 646.3ms TimeCoverageRelationStatistics Valid=150, Invalid=1332, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:34:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6306 states. [2021-08-21 12:34:09,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6306 to 5784. [2021-08-21 12:34:09,536 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) [2021-08-21 12:34:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2021-08-21 12:34:09,549 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2021-08-21 12:34:09,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:09,549 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2021-08-21 12:34:09,549 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) [2021-08-21 12:34:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2021-08-21 12:34:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:09,559 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:09,559 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:09,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-08-21 12:34:09,559 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:09,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:09,559 INFO L82 PathProgramCache]: Analyzing trace with hash -529401719, now seen corresponding path program 139 times [2021-08-21 12:34:09,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:09,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361635259] [2021-08-21 12:34:09,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:09,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:09,870 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:09,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361635259] [2021-08-21 12:34:09,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361635259] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:09,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:09,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:09,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706938211] [2021-08-21 12:34:09,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:09,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:09,871 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) [2021-08-21 12:34:10,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:10,975 INFO L93 Difference]: Finished difference Result 6494 states and 22478 transitions. [2021-08-21 12:34:10,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-08-21 12:34:10,976 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 [2021-08-21 12:34:10,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:10,989 INFO L225 Difference]: With dead ends: 6494 [2021-08-21 12:34:10,989 INFO L226 Difference]: Without dead ends: 6405 [2021-08-21 12:34:10,989 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 710.8ms TimeCoverageRelationStatistics Valid=168, Invalid=1472, Unknown=0, NotChecked=0, Total=1640 [2021-08-21 12:34:10,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2021-08-21 12:34:11,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 5784. [2021-08-21 12:34:11,058 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) [2021-08-21 12:34:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5784 states to 5784 states and 20123 transitions. [2021-08-21 12:34:11,070 INFO L78 Accepts]: Start accepts. Automaton has 5784 states and 20123 transitions. Word has length 47 [2021-08-21 12:34:11,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:11,070 INFO L470 AbstractCegarLoop]: Abstraction has 5784 states and 20123 transitions. [2021-08-21 12:34:11,070 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) [2021-08-21 12:34:11,070 INFO L276 IsEmpty]: Start isEmpty. Operand 5784 states and 20123 transitions. [2021-08-21 12:34:11,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:11,078 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:11,078 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:11,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-08-21 12:34:11,078 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:11,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:11,078 INFO L82 PathProgramCache]: Analyzing trace with hash -95372373, now seen corresponding path program 140 times [2021-08-21 12:34:11,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:11,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101641568] [2021-08-21 12:34:11,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:11,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:11,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:11,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:11,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101641568] [2021-08-21 12:34:11,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101641568] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:11,385 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:11,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:11,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184795847] [2021-08-21 12:34:11,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:11,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:11,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:11,386 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) [2021-08-21 12:34:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:12,454 INFO L93 Difference]: Finished difference Result 6486 states and 22450 transitions. [2021-08-21 12:34:12,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-21 12:34:12,455 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 [2021-08-21 12:34:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:12,468 INFO L225 Difference]: With dead ends: 6486 [2021-08-21 12:34:12,468 INFO L226 Difference]: Without dead ends: 6381 [2021-08-21 12:34:12,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 653.5ms TimeCoverageRelationStatistics Valid=154, Invalid=1328, Unknown=0, NotChecked=0, Total=1482 [2021-08-21 12:34:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6381 states. [2021-08-21 12:34:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6381 to 5800. [2021-08-21 12:34:12,542 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) [2021-08-21 12:34:12,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5800 states to 5800 states and 20171 transitions. [2021-08-21 12:34:12,555 INFO L78 Accepts]: Start accepts. Automaton has 5800 states and 20171 transitions. Word has length 47 [2021-08-21 12:34:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:12,555 INFO L470 AbstractCegarLoop]: Abstraction has 5800 states and 20171 transitions. [2021-08-21 12:34:12,555 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) [2021-08-21 12:34:12,555 INFO L276 IsEmpty]: Start isEmpty. Operand 5800 states and 20171 transitions. [2021-08-21 12:34:12,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:12,563 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:12,563 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:12,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-08-21 12:34:12,563 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1177561335, now seen corresponding path program 141 times [2021-08-21 12:34:12,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:12,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521476182] [2021-08-21 12:34:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:12,564 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:12,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:12,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:12,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521476182] [2021-08-21 12:34:12,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521476182] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:12,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:12,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:12,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321283255] [2021-08-21 12:34:12,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:12,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:12,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:12,903 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) [2021-08-21 12:34:13,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:13,917 INFO L93 Difference]: Finished difference Result 6379 states and 22123 transitions. [2021-08-21 12:34:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-08-21 12:34:13,918 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 [2021-08-21 12:34:13,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:13,930 INFO L225 Difference]: With dead ends: 6379 [2021-08-21 12:34:13,930 INFO L226 Difference]: Without dead ends: 6110 [2021-08-21 12:34:13,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 643.2ms TimeCoverageRelationStatistics Valid=142, Invalid=1190, Unknown=0, NotChecked=0, Total=1332 [2021-08-21 12:34:13,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6110 states. [2021-08-21 12:34:13,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6110 to 5676. [2021-08-21 12:34:14,003 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) [2021-08-21 12:34:14,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5676 states to 5676 states and 19811 transitions. [2021-08-21 12:34:14,015 INFO L78 Accepts]: Start accepts. Automaton has 5676 states and 19811 transitions. Word has length 47 [2021-08-21 12:34:14,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:14,015 INFO L470 AbstractCegarLoop]: Abstraction has 5676 states and 19811 transitions. [2021-08-21 12:34:14,015 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) [2021-08-21 12:34:14,015 INFO L276 IsEmpty]: Start isEmpty. Operand 5676 states and 19811 transitions. [2021-08-21 12:34:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:14,024 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:14,024 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:14,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-08-21 12:34:14,024 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:14,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:14,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1450016701, now seen corresponding path program 142 times [2021-08-21 12:34:14,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:14,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789425275] [2021-08-21 12:34:14,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:14,025 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:14,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:14,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:14,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789425275] [2021-08-21 12:34:14,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789425275] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:14,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:14,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:14,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679918892] [2021-08-21 12:34:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:14,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:14,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:14,331 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) [2021-08-21 12:34:17,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:17,684 INFO L93 Difference]: Finished difference Result 9641 states and 33896 transitions. [2021-08-21 12:34:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-08-21 12:34:17,684 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 [2021-08-21 12:34:17,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:17,705 INFO L225 Difference]: With dead ends: 9641 [2021-08-21 12:34:17,705 INFO L226 Difference]: Without dead ends: 9414 [2021-08-21 12:34:17,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1415 ImplicationChecksByTransitivity, 1804.9ms TimeCoverageRelationStatistics Valid=474, Invalid=4496, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 12:34:17,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9414 states. [2021-08-21 12:34:17,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9414 to 5851. [2021-08-21 12:34:17,805 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) [2021-08-21 12:34:17,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 20420 transitions. [2021-08-21 12:34:17,818 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 20420 transitions. Word has length 47 [2021-08-21 12:34:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:17,818 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 20420 transitions. [2021-08-21 12:34:17,818 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) [2021-08-21 12:34:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 20420 transitions. [2021-08-21 12:34:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:17,827 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:17,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:17,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-08-21 12:34:17,827 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:17,828 INFO L82 PathProgramCache]: Analyzing trace with hash 99268097, now seen corresponding path program 143 times [2021-08-21 12:34:17,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:17,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380990830] [2021-08-21 12:34:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:17,828 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:18,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:18,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380990830] [2021-08-21 12:34:18,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380990830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:18,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:18,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:18,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675802447] [2021-08-21 12:34:18,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:18,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:18,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:18,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:18,137 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) [2021-08-21 12:34:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:22,074 INFO L93 Difference]: Finished difference Result 11528 states and 40542 transitions. [2021-08-21 12:34:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-08-21 12:34:22,074 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 [2021-08-21 12:34:22,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:22,106 INFO L225 Difference]: With dead ends: 11528 [2021-08-21 12:34:22,107 INFO L226 Difference]: Without dead ends: 11339 [2021-08-21 12:34:22,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2835 ImplicationChecksByTransitivity, 2420.3ms TimeCoverageRelationStatistics Valid=764, Invalid=7792, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 12:34:22,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11339 states. [2021-08-21 12:34:22,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11339 to 6216. [2021-08-21 12:34:22,248 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) [2021-08-21 12:34:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6216 states to 6216 states and 21746 transitions. [2021-08-21 12:34:22,347 INFO L78 Accepts]: Start accepts. Automaton has 6216 states and 21746 transitions. Word has length 47 [2021-08-21 12:34:22,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:22,347 INFO L470 AbstractCegarLoop]: Abstraction has 6216 states and 21746 transitions. [2021-08-21 12:34:22,347 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) [2021-08-21 12:34:22,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6216 states and 21746 transitions. [2021-08-21 12:34:22,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:22,357 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:22,357 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:22,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-08-21 12:34:22,357 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:22,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash -751383811, now seen corresponding path program 144 times [2021-08-21 12:34:22,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:22,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942644541] [2021-08-21 12:34:22,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:22,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:22,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:22,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942644541] [2021-08-21 12:34:22,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942644541] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:22,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:22,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:22,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433262025] [2021-08-21 12:34:22,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:22,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:22,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:22,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:22,686 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) [2021-08-21 12:34:27,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:27,898 INFO L93 Difference]: Finished difference Result 13233 states and 46883 transitions. [2021-08-21 12:34:27,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-08-21 12:34:27,898 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 [2021-08-21 12:34:27,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:27,929 INFO L225 Difference]: With dead ends: 13233 [2021-08-21 12:34:27,930 INFO L226 Difference]: Without dead ends: 13030 [2021-08-21 12:34:27,931 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4235 ImplicationChecksByTransitivity, 3238.5ms TimeCoverageRelationStatistics Valid=1007, Invalid=10983, Unknown=0, NotChecked=0, Total=11990 [2021-08-21 12:34:27,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13030 states. [2021-08-21 12:34:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13030 to 6600. [2021-08-21 12:34:28,061 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) [2021-08-21 12:34:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6600 states to 6600 states and 23148 transitions. [2021-08-21 12:34:28,077 INFO L78 Accepts]: Start accepts. Automaton has 6600 states and 23148 transitions. Word has length 47 [2021-08-21 12:34:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:28,077 INFO L470 AbstractCegarLoop]: Abstraction has 6600 states and 23148 transitions. [2021-08-21 12:34:28,077 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) [2021-08-21 12:34:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 6600 states and 23148 transitions. [2021-08-21 12:34:28,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:28,088 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:28,088 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:28,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-08-21 12:34:28,088 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:28,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:28,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1424423741, now seen corresponding path program 145 times [2021-08-21 12:34:28,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:28,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673252355] [2021-08-21 12:34:28,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:28,089 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:28,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:28,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:28,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:28,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673252355] [2021-08-21 12:34:28,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673252355] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:28,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:28,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:34:28,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938321252] [2021-08-21 12:34:28,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:34:28,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:28,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:34:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:34:28,385 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) [2021-08-21 12:34:31,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:31,447 INFO L93 Difference]: Finished difference Result 11080 states and 38723 transitions. [2021-08-21 12:34:31,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-21 12:34:31,447 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 [2021-08-21 12:34:31,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:31,471 INFO L225 Difference]: With dead ends: 11080 [2021-08-21 12:34:31,471 INFO L226 Difference]: Without dead ends: 10843 [2021-08-21 12:34:31,472 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2084 ImplicationChecksByTransitivity, 1846.9ms TimeCoverageRelationStatistics Valid=605, Invalid=5875, Unknown=0, NotChecked=0, Total=6480 [2021-08-21 12:34:31,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10843 states. [2021-08-21 12:34:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10843 to 7034. [2021-08-21 12:34:31,598 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) [2021-08-21 12:34:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7034 states to 7034 states and 24692 transitions. [2021-08-21 12:34:31,615 INFO L78 Accepts]: Start accepts. Automaton has 7034 states and 24692 transitions. Word has length 47 [2021-08-21 12:34:31,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:31,615 INFO L470 AbstractCegarLoop]: Abstraction has 7034 states and 24692 transitions. [2021-08-21 12:34:31,615 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) [2021-08-21 12:34:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7034 states and 24692 transitions. [2021-08-21 12:34:31,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:31,690 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:31,690 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:31,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-08-21 12:34:31,691 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:31,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:31,691 INFO L82 PathProgramCache]: Analyzing trace with hash -554450721, now seen corresponding path program 146 times [2021-08-21 12:34:31,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:31,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412292468] [2021-08-21 12:34:31,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:31,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:31,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:31,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412292468] [2021-08-21 12:34:31,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412292468] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:31,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:31,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:31,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428045583] [2021-08-21 12:34:31,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:31,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:31,903 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) [2021-08-21 12:34:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:36,054 INFO L93 Difference]: Finished difference Result 12694 states and 44788 transitions. [2021-08-21 12:34:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-21 12:34:36,055 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 [2021-08-21 12:34:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:36,090 INFO L225 Difference]: With dead ends: 12694 [2021-08-21 12:34:36,091 INFO L226 Difference]: Without dead ends: 12457 [2021-08-21 12:34:36,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3072 ImplicationChecksByTransitivity, 2582.4ms TimeCoverageRelationStatistics Valid=790, Invalid=8330, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 12:34:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12457 states. [2021-08-21 12:34:36,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12457 to 6946. [2021-08-21 12:34:36,237 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) [2021-08-21 12:34:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 24397 transitions. [2021-08-21 12:34:36,254 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 24397 transitions. Word has length 47 [2021-08-21 12:34:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:36,254 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 24397 transitions. [2021-08-21 12:34:36,255 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) [2021-08-21 12:34:36,255 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 24397 transitions. [2021-08-21 12:34:36,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:36,267 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:36,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:36,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-08-21 12:34:36,281 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:36,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:36,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1405102629, now seen corresponding path program 147 times [2021-08-21 12:34:36,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:36,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434266801] [2021-08-21 12:34:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:36,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:36,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:36,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434266801] [2021-08-21 12:34:36,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434266801] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:36,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:36,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:36,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560713404] [2021-08-21 12:34:36,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:36,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:36,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:36,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:36,598 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) [2021-08-21 12:34:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:40,527 INFO L93 Difference]: Finished difference Result 12797 states and 45311 transitions. [2021-08-21 12:34:40,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2021-08-21 12:34:40,528 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 [2021-08-21 12:34:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:40,557 INFO L225 Difference]: With dead ends: 12797 [2021-08-21 12:34:40,557 INFO L226 Difference]: Without dead ends: 12486 [2021-08-21 12:34:40,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2845 ImplicationChecksByTransitivity, 2336.2ms TimeCoverageRelationStatistics Valid=749, Invalid=7807, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 12:34:40,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12486 states. [2021-08-21 12:34:40,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12486 to 6928. [2021-08-21 12:34:40,775 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) [2021-08-21 12:34:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6928 states to 6928 states and 24372 transitions. [2021-08-21 12:34:40,791 INFO L78 Accepts]: Start accepts. Automaton has 6928 states and 24372 transitions. Word has length 47 [2021-08-21 12:34:40,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:40,791 INFO L470 AbstractCegarLoop]: Abstraction has 6928 states and 24372 transitions. [2021-08-21 12:34:40,791 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) [2021-08-21 12:34:40,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6928 states and 24372 transitions. [2021-08-21 12:34:40,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:40,803 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:40,803 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:40,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-08-21 12:34:40,803 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:40,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:40,803 INFO L82 PathProgramCache]: Analyzing trace with hash 881846205, now seen corresponding path program 148 times [2021-08-21 12:34:40,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:40,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360405639] [2021-08-21 12:34:40,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:40,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:41,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:41,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360405639] [2021-08-21 12:34:41,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360405639] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:41,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:41,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:41,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034863660] [2021-08-21 12:34:41,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:41,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:41,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:41,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:41,139 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) [2021-08-21 12:34:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:44,459 INFO L93 Difference]: Finished difference Result 11278 states and 39722 transitions. [2021-08-21 12:34:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-21 12:34:44,460 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 [2021-08-21 12:34:44,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:44,483 INFO L225 Difference]: With dead ends: 11278 [2021-08-21 12:34:44,484 INFO L226 Difference]: Without dead ends: 11151 [2021-08-21 12:34:44,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1829.6ms TimeCoverageRelationStatistics Valid=561, Invalid=5759, Unknown=0, NotChecked=0, Total=6320 [2021-08-21 12:34:44,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11151 states. [2021-08-21 12:34:44,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11151 to 6942. [2021-08-21 12:34:44,604 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) [2021-08-21 12:34:44,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6942 states to 6942 states and 24410 transitions. [2021-08-21 12:34:44,620 INFO L78 Accepts]: Start accepts. Automaton has 6942 states and 24410 transitions. Word has length 47 [2021-08-21 12:34:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 6942 states and 24410 transitions. [2021-08-21 12:34:44,621 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) [2021-08-21 12:34:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 6942 states and 24410 transitions. [2021-08-21 12:34:44,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:44,632 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:44,632 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:44,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-08-21 12:34:44,633 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:44,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:44,633 INFO L82 PathProgramCache]: Analyzing trace with hash -468902399, now seen corresponding path program 149 times [2021-08-21 12:34:44,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:44,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162534687] [2021-08-21 12:34:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:44,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:44,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:44,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162534687] [2021-08-21 12:34:44,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162534687] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:44,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:44,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:44,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237950011] [2021-08-21 12:34:44,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:44,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:44,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:44,968 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) [2021-08-21 12:34:49,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:49,416 INFO L93 Difference]: Finished difference Result 13025 states and 45918 transitions. [2021-08-21 12:34:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-21 12:34:49,417 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 [2021-08-21 12:34:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:49,450 INFO L225 Difference]: With dead ends: 13025 [2021-08-21 12:34:49,450 INFO L226 Difference]: Without dead ends: 12836 [2021-08-21 12:34:49,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3465 ImplicationChecksByTransitivity, 2759.3ms TimeCoverageRelationStatistics Valid=885, Invalid=9417, Unknown=0, NotChecked=0, Total=10302 [2021-08-21 12:34:49,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12836 states. [2021-08-21 12:34:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12836 to 6956. [2021-08-21 12:34:49,603 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) [2021-08-21 12:34:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6956 states to 6956 states and 24460 transitions. [2021-08-21 12:34:49,745 INFO L78 Accepts]: Start accepts. Automaton has 6956 states and 24460 transitions. Word has length 47 [2021-08-21 12:34:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:49,745 INFO L470 AbstractCegarLoop]: Abstraction has 6956 states and 24460 transitions. [2021-08-21 12:34:49,745 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) [2021-08-21 12:34:49,745 INFO L276 IsEmpty]: Start isEmpty. Operand 6956 states and 24460 transitions. [2021-08-21 12:34:49,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:49,760 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:49,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:49,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-08-21 12:34:49,760 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:49,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:49,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1319554307, now seen corresponding path program 150 times [2021-08-21 12:34:49,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:49,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142900372] [2021-08-21 12:34:49,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:49,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:50,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:50,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142900372] [2021-08-21 12:34:50,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142900372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:50,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015339313] [2021-08-21 12:34:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:50,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:50,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:50,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:50,077 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) [2021-08-21 12:34:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:54,517 INFO L93 Difference]: Finished difference Result 14539 states and 51585 transitions. [2021-08-21 12:34:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-08-21 12:34:54,517 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 [2021-08-21 12:34:54,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:54,553 INFO L225 Difference]: With dead ends: 14539 [2021-08-21 12:34:54,553 INFO L226 Difference]: Without dead ends: 14336 [2021-08-21 12:34:54,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5197 ImplicationChecksByTransitivity, 2725.6ms TimeCoverageRelationStatistics Valid=1147, Invalid=13373, Unknown=0, NotChecked=0, Total=14520 [2021-08-21 12:34:54,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14336 states. [2021-08-21 12:34:54,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14336 to 6972. [2021-08-21 12:34:54,712 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) [2021-08-21 12:34:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 24530 transitions. [2021-08-21 12:34:54,732 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 24530 transitions. Word has length 47 [2021-08-21 12:34:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:54,733 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 24530 transitions. [2021-08-21 12:34:54,733 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) [2021-08-21 12:34:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 24530 transitions. [2021-08-21 12:34:54,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:54,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:54,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:54,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-08-21 12:34:54,747 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:54,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:54,747 INFO L82 PathProgramCache]: Analyzing trace with hash -730368805, now seen corresponding path program 151 times [2021-08-21 12:34:54,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:54,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237889732] [2021-08-21 12:34:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:54,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:55,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:55,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237889732] [2021-08-21 12:34:55,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237889732] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:55,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:55,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:34:55,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840608980] [2021-08-21 12:34:55,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:34:55,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:55,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:34:55,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:34:55,063 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) [2021-08-21 12:34:57,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:34:57,303 INFO L93 Difference]: Finished difference Result 10668 states and 37559 transitions. [2021-08-21 12:34:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 12:34:57,303 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 [2021-08-21 12:34:57,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:34:57,327 INFO L225 Difference]: With dead ends: 10668 [2021-08-21 12:34:57,327 INFO L226 Difference]: Without dead ends: 10541 [2021-08-21 12:34:57,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 1232.5ms TimeCoverageRelationStatistics Valid=454, Invalid=4516, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 12:34:57,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10541 states. [2021-08-21 12:34:57,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10541 to 6994. [2021-08-21 12:34:57,536 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) [2021-08-21 12:34:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6994 states to 6994 states and 24584 transitions. [2021-08-21 12:34:57,553 INFO L78 Accepts]: Start accepts. Automaton has 6994 states and 24584 transitions. Word has length 47 [2021-08-21 12:34:57,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:34:57,553 INFO L470 AbstractCegarLoop]: Abstraction has 6994 states and 24584 transitions. [2021-08-21 12:34:57,553 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) [2021-08-21 12:34:57,553 INFO L276 IsEmpty]: Start isEmpty. Operand 6994 states and 24584 transitions. [2021-08-21 12:34:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:34:57,565 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:34:57,565 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:34:57,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-08-21 12:34:57,565 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:34:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:34:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2101566211, now seen corresponding path program 152 times [2021-08-21 12:34:57,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:34:57,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597307746] [2021-08-21 12:34:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:34:57,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:34:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:34:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:34:57,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:34:57,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597307746] [2021-08-21 12:34:57,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597307746] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:34:57,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:34:57,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:34:57,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065476191] [2021-08-21 12:34:57,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:34:57,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:34:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:34:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:34:57,860 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) [2021-08-21 12:35:00,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:00,524 INFO L93 Difference]: Finished difference Result 10464 states and 36775 transitions. [2021-08-21 12:35:00,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 12:35:00,524 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 [2021-08-21 12:35:00,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:00,549 INFO L225 Difference]: With dead ends: 10464 [2021-08-21 12:35:00,549 INFO L226 Difference]: Without dead ends: 10364 [2021-08-21 12:35:00,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1140 ImplicationChecksByTransitivity, 1406.4ms TimeCoverageRelationStatistics Valid=400, Invalid=3760, Unknown=0, NotChecked=0, Total=4160 [2021-08-21 12:35:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2021-08-21 12:35:00,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 7003. [2021-08-21 12:35:00,735 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) [2021-08-21 12:35:00,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7003 states to 7003 states and 24606 transitions. [2021-08-21 12:35:00,755 INFO L78 Accepts]: Start accepts. Automaton has 7003 states and 24606 transitions. Word has length 47 [2021-08-21 12:35:00,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:00,755 INFO L470 AbstractCegarLoop]: Abstraction has 7003 states and 24606 transitions. [2021-08-21 12:35:00,755 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) [2021-08-21 12:35:00,755 INFO L276 IsEmpty]: Start isEmpty. Operand 7003 states and 24606 transitions. [2021-08-21 12:35:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:00,767 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:00,767 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:00,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-08-21 12:35:00,768 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:00,768 INFO L82 PathProgramCache]: Analyzing trace with hash 758333595, now seen corresponding path program 153 times [2021-08-21 12:35:00,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:00,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995142878] [2021-08-21 12:35:00,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:00,768 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:01,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:01,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:01,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995142878] [2021-08-21 12:35:01,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995142878] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:01,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:01,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:01,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010718729] [2021-08-21 12:35:01,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:01,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:01,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:01,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:01,087 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) [2021-08-21 12:35:05,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:05,400 INFO L93 Difference]: Finished difference Result 11977 states and 42156 transitions. [2021-08-21 12:35:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-08-21 12:35:05,400 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 [2021-08-21 12:35:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:05,429 INFO L225 Difference]: With dead ends: 11977 [2021-08-21 12:35:05,429 INFO L226 Difference]: Without dead ends: 11823 [2021-08-21 12:35:05,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2795 ImplicationChecksByTransitivity, 2503.0ms TimeCoverageRelationStatistics Valid=780, Invalid=7962, Unknown=0, NotChecked=0, Total=8742 [2021-08-21 12:35:05,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11823 states. [2021-08-21 12:35:05,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11823 to 7194. [2021-08-21 12:35:05,573 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) [2021-08-21 12:35:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7194 states to 7194 states and 25253 transitions. [2021-08-21 12:35:05,591 INFO L78 Accepts]: Start accepts. Automaton has 7194 states and 25253 transitions. Word has length 47 [2021-08-21 12:35:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:05,591 INFO L470 AbstractCegarLoop]: Abstraction has 7194 states and 25253 transitions. [2021-08-21 12:35:05,592 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) [2021-08-21 12:35:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 7194 states and 25253 transitions. [2021-08-21 12:35:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:05,604 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:05,604 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:05,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-08-21 12:35:05,604 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1316199937, now seen corresponding path program 154 times [2021-08-21 12:35:05,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:05,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015423519] [2021-08-21 12:35:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:05,604 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:05,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:05,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015423519] [2021-08-21 12:35:05,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015423519] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:05,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:05,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:05,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049460962] [2021-08-21 12:35:05,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:05,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:05,932 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) [2021-08-21 12:35:10,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:10,471 INFO L93 Difference]: Finished difference Result 13905 states and 48872 transitions. [2021-08-21 12:35:10,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-08-21 12:35:10,471 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 [2021-08-21 12:35:10,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:10,507 INFO L225 Difference]: With dead ends: 13905 [2021-08-21 12:35:10,507 INFO L226 Difference]: Without dead ends: 13767 [2021-08-21 12:35:10,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3468 ImplicationChecksByTransitivity, 2619.7ms TimeCoverageRelationStatistics Valid=827, Invalid=9475, Unknown=0, NotChecked=0, Total=10302 [2021-08-21 12:35:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13767 states. [2021-08-21 12:35:10,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13767 to 7314. [2021-08-21 12:35:10,637 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) [2021-08-21 12:35:10,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7314 states to 7314 states and 25694 transitions. [2021-08-21 12:35:10,654 INFO L78 Accepts]: Start accepts. Automaton has 7314 states and 25694 transitions. Word has length 47 [2021-08-21 12:35:10,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:10,655 INFO L470 AbstractCegarLoop]: Abstraction has 7314 states and 25694 transitions. [2021-08-21 12:35:10,655 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) [2021-08-21 12:35:10,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7314 states and 25694 transitions. [2021-08-21 12:35:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:10,667 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:10,667 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:10,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-08-21 12:35:10,667 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:10,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:10,667 INFO L82 PathProgramCache]: Analyzing trace with hash 152500989, now seen corresponding path program 155 times [2021-08-21 12:35:10,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:10,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105818173] [2021-08-21 12:35:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:10,667 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:11,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:11,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105818173] [2021-08-21 12:35:11,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105818173] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:11,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:11,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:11,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625203203] [2021-08-21 12:35:11,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:11,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:11,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:11,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:11,004 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) [2021-08-21 12:35:16,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:16,530 INFO L93 Difference]: Finished difference Result 14970 states and 52737 transitions. [2021-08-21 12:35:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-08-21 12:35:16,531 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 [2021-08-21 12:35:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:16,567 INFO L225 Difference]: With dead ends: 14970 [2021-08-21 12:35:16,567 INFO L226 Difference]: Without dead ends: 14857 [2021-08-21 12:35:16,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4818 ImplicationChecksByTransitivity, 3390.5ms TimeCoverageRelationStatistics Valid=1072, Invalid=12500, Unknown=0, NotChecked=0, Total=13572 [2021-08-21 12:35:16,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2021-08-21 12:35:16,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 7329. [2021-08-21 12:35:16,800 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) [2021-08-21 12:35:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25744 transitions. [2021-08-21 12:35:16,816 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25744 transitions. Word has length 47 [2021-08-21 12:35:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:16,816 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 25744 transitions. [2021-08-21 12:35:16,816 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) [2021-08-21 12:35:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25744 transitions. [2021-08-21 12:35:16,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:16,828 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:16,829 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:16,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-08-21 12:35:16,829 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:16,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:16,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1300529253, now seen corresponding path program 156 times [2021-08-21 12:35:16,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:16,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193448942] [2021-08-21 12:35:16,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:16,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:17,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:17,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193448942] [2021-08-21 12:35:17,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193448942] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:17,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:17,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:35:17,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470326926] [2021-08-21 12:35:17,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:35:17,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:17,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:35:17,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:35:17,155 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) [2021-08-21 12:35:19,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:19,955 INFO L93 Difference]: Finished difference Result 11739 states and 41164 transitions. [2021-08-21 12:35:19,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-08-21 12:35:19,956 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 [2021-08-21 12:35:19,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:20,068 INFO L225 Difference]: With dead ends: 11739 [2021-08-21 12:35:20,068 INFO L226 Difference]: Without dead ends: 11639 [2021-08-21 12:35:20,069 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 1596.7ms TimeCoverageRelationStatistics Valid=471, Invalid=4499, Unknown=0, NotChecked=0, Total=4970 [2021-08-21 12:35:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11639 states. [2021-08-21 12:35:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11639 to 7338. [2021-08-21 12:35:20,184 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) [2021-08-21 12:35:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 25766 transitions. [2021-08-21 12:35:20,201 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 25766 transitions. Word has length 47 [2021-08-21 12:35:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:20,201 INFO L470 AbstractCegarLoop]: Abstraction has 7338 states and 25766 transitions. [2021-08-21 12:35:20,201 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) [2021-08-21 12:35:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 25766 transitions. [2021-08-21 12:35:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:20,214 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:20,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:20,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-08-21 12:35:20,214 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:20,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1366591811, now seen corresponding path program 157 times [2021-08-21 12:35:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:20,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230073963] [2021-08-21 12:35:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:20,214 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:20,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:20,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:20,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230073963] [2021-08-21 12:35:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230073963] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:20,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:20,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788459769] [2021-08-21 12:35:20,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:20,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:20,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:20,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:20,545 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) [2021-08-21 12:35:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:25,302 INFO L93 Difference]: Finished difference Result 13320 states and 46717 transitions. [2021-08-21 12:35:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-21 12:35:25,302 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 [2021-08-21 12:35:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:25,335 INFO L225 Difference]: With dead ends: 13320 [2021-08-21 12:35:25,336 INFO L226 Difference]: Without dead ends: 13178 [2021-08-21 12:35:25,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3515 ImplicationChecksByTransitivity, 2866.1ms TimeCoverageRelationStatistics Valid=887, Invalid=9619, Unknown=0, NotChecked=0, Total=10506 [2021-08-21 12:35:25,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13178 states. [2021-08-21 12:35:25,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13178 to 7329. [2021-08-21 12:35:25,486 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) [2021-08-21 12:35:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7329 states to 7329 states and 25752 transitions. [2021-08-21 12:35:25,504 INFO L78 Accepts]: Start accepts. Automaton has 7329 states and 25752 transitions. Word has length 47 [2021-08-21 12:35:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:25,504 INFO L470 AbstractCegarLoop]: Abstraction has 7329 states and 25752 transitions. [2021-08-21 12:35:25,504 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) [2021-08-21 12:35:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 7329 states and 25752 transitions. [2021-08-21 12:35:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:25,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:25,517 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:25,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-08-21 12:35:25,517 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:25,517 INFO L82 PathProgramCache]: Analyzing trace with hash 896094299, now seen corresponding path program 158 times [2021-08-21 12:35:25,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:25,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456558847] [2021-08-21 12:35:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:25,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:25,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:25,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456558847] [2021-08-21 12:35:25,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456558847] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:25,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:25,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:35:25,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944259056] [2021-08-21 12:35:25,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:35:25,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:25,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:35:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:35:25,831 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) [2021-08-21 12:35:29,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:29,102 INFO L93 Difference]: Finished difference Result 11833 states and 41364 transitions. [2021-08-21 12:35:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-08-21 12:35:29,102 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 [2021-08-21 12:35:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:29,128 INFO L225 Difference]: With dead ends: 11833 [2021-08-21 12:35:29,128 INFO L226 Difference]: Without dead ends: 11696 [2021-08-21 12:35:29,129 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1776 ImplicationChecksByTransitivity, 1843.6ms TimeCoverageRelationStatistics Valid=522, Invalid=5330, Unknown=0, NotChecked=0, Total=5852 [2021-08-21 12:35:29,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11696 states. [2021-08-21 12:35:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11696 to 7365. [2021-08-21 12:35:29,260 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) [2021-08-21 12:35:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7365 states to 7365 states and 25842 transitions. [2021-08-21 12:35:29,277 INFO L78 Accepts]: Start accepts. Automaton has 7365 states and 25842 transitions. Word has length 47 [2021-08-21 12:35:29,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:29,278 INFO L470 AbstractCegarLoop]: Abstraction has 7365 states and 25842 transitions. [2021-08-21 12:35:29,278 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) [2021-08-21 12:35:29,278 INFO L276 IsEmpty]: Start isEmpty. Operand 7365 states and 25842 transitions. [2021-08-21 12:35:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:29,348 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:29,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:29,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2021-08-21 12:35:29,348 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:29,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1764279269, now seen corresponding path program 159 times [2021-08-21 12:35:29,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:29,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412637851] [2021-08-21 12:35:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:29,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:29,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:29,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412637851] [2021-08-21 12:35:29,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412637851] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:29,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:29,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:29,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611767178] [2021-08-21 12:35:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:29,685 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) [2021-08-21 12:35:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:34,054 INFO L93 Difference]: Finished difference Result 12448 states and 43499 transitions. [2021-08-21 12:35:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-21 12:35:34,054 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 [2021-08-21 12:35:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:34,083 INFO L225 Difference]: With dead ends: 12448 [2021-08-21 12:35:34,083 INFO L226 Difference]: Without dead ends: 12308 [2021-08-21 12:35:34,084 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2991 ImplicationChecksByTransitivity, 2521.5ms TimeCoverageRelationStatistics Valid=738, Invalid=8382, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 12:35:34,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12308 states. [2021-08-21 12:35:34,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12308 to 7347. [2021-08-21 12:35:34,224 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) [2021-08-21 12:35:34,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7347 states to 7347 states and 25791 transitions. [2021-08-21 12:35:34,242 INFO L78 Accepts]: Start accepts. Automaton has 7347 states and 25791 transitions. Word has length 47 [2021-08-21 12:35:34,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:34,242 INFO L470 AbstractCegarLoop]: Abstraction has 7347 states and 25791 transitions. [2021-08-21 12:35:34,242 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) [2021-08-21 12:35:34,242 INFO L276 IsEmpty]: Start isEmpty. Operand 7347 states and 25791 transitions. [2021-08-21 12:35:34,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:34,256 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:34,256 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:34,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2021-08-21 12:35:34,256 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:34,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:34,256 INFO L82 PathProgramCache]: Analyzing trace with hash 2097663485, now seen corresponding path program 160 times [2021-08-21 12:35:34,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:34,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785075325] [2021-08-21 12:35:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:34,257 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:34,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:34,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:34,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785075325] [2021-08-21 12:35:34,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785075325] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:34,588 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:34,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:34,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738481954] [2021-08-21 12:35:34,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:34,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:34,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:34,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:34,589 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) [2021-08-21 12:35:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:39,559 INFO L93 Difference]: Finished difference Result 13400 states and 47109 transitions. [2021-08-21 12:35:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-21 12:35:39,559 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 [2021-08-21 12:35:39,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:39,591 INFO L225 Difference]: With dead ends: 13400 [2021-08-21 12:35:39,591 INFO L226 Difference]: Without dead ends: 13263 [2021-08-21 12:35:39,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3564 ImplicationChecksByTransitivity, 3041.9ms TimeCoverageRelationStatistics Valid=862, Invalid=9644, Unknown=0, NotChecked=0, Total=10506 [2021-08-21 12:35:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13263 states. [2021-08-21 12:35:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13263 to 7496. [2021-08-21 12:35:39,811 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) [2021-08-21 12:35:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7496 states to 7496 states and 26367 transitions. [2021-08-21 12:35:39,829 INFO L78 Accepts]: Start accepts. Automaton has 7496 states and 26367 transitions. Word has length 47 [2021-08-21 12:35:39,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:39,830 INFO L470 AbstractCegarLoop]: Abstraction has 7496 states and 26367 transitions. [2021-08-21 12:35:39,830 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) [2021-08-21 12:35:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7496 states and 26367 transitions. [2021-08-21 12:35:39,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:39,843 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:39,843 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:39,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2021-08-21 12:35:39,843 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1247011577, now seen corresponding path program 161 times [2021-08-21 12:35:39,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:39,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047683624] [2021-08-21 12:35:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:39,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:40,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:40,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:40,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047683624] [2021-08-21 12:35:40,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047683624] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:40,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:40,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:40,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325467326] [2021-08-21 12:35:40,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:40,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:40,180 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) [2021-08-21 12:35:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:44,756 INFO L93 Difference]: Finished difference Result 13625 states and 47957 transitions. [2021-08-21 12:35:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-08-21 12:35:44,757 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 [2021-08-21 12:35:44,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:44,798 INFO L225 Difference]: With dead ends: 13625 [2021-08-21 12:35:44,798 INFO L226 Difference]: Without dead ends: 13365 [2021-08-21 12:35:44,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3313 ImplicationChecksByTransitivity, 2697.7ms TimeCoverageRelationStatistics Valid=816, Invalid=9084, Unknown=0, NotChecked=0, Total=9900 [2021-08-21 12:35:44,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13365 states. [2021-08-21 12:35:44,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13365 to 7367. [2021-08-21 12:35:44,949 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) [2021-08-21 12:35:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2021-08-21 12:35:44,966 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2021-08-21 12:35:44,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:44,966 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2021-08-21 12:35:44,966 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) [2021-08-21 12:35:44,966 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2021-08-21 12:35:44,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:44,978 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:44,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:44,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2021-08-21 12:35:44,979 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:44,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:44,979 INFO L82 PathProgramCache]: Analyzing trace with hash 157641055, now seen corresponding path program 162 times [2021-08-21 12:35:44,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:44,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513554793] [2021-08-21 12:35:44,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:44,979 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:45,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:45,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513554793] [2021-08-21 12:35:45,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513554793] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:45,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:45,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:45,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233037980] [2021-08-21 12:35:45,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:45,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:45,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:45,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:45,313 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) [2021-08-21 12:35:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:50,191 INFO L93 Difference]: Finished difference Result 14353 states and 50433 transitions. [2021-08-21 12:35:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-21 12:35:50,191 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 [2021-08-21 12:35:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:50,225 INFO L225 Difference]: With dead ends: 14353 [2021-08-21 12:35:50,225 INFO L226 Difference]: Without dead ends: 14231 [2021-08-21 12:35:50,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 2780.6ms TimeCoverageRelationStatistics Valid=871, Invalid=10259, Unknown=0, NotChecked=0, Total=11130 [2021-08-21 12:35:50,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2021-08-21 12:35:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 7367. [2021-08-21 12:35:50,383 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) [2021-08-21 12:35:50,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7367 states to 7367 states and 25867 transitions. [2021-08-21 12:35:50,401 INFO L78 Accepts]: Start accepts. Automaton has 7367 states and 25867 transitions. Word has length 47 [2021-08-21 12:35:50,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:50,401 INFO L470 AbstractCegarLoop]: Abstraction has 7367 states and 25867 transitions. [2021-08-21 12:35:50,401 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) [2021-08-21 12:35:50,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7367 states and 25867 transitions. [2021-08-21 12:35:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:50,414 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:50,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:50,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2021-08-21 12:35:50,414 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:50,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:50,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1006057893, now seen corresponding path program 163 times [2021-08-21 12:35:50,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:50,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725133169] [2021-08-21 12:35:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:50,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:50,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:50,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:50,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:50,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725133169] [2021-08-21 12:35:50,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725133169] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:50,747 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:50,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:35:50,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173653315] [2021-08-21 12:35:50,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:35:50,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:50,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:35:50,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:35:50,747 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) [2021-08-21 12:35:56,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:56,261 INFO L93 Difference]: Finished difference Result 14566 states and 51171 transitions. [2021-08-21 12:35:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-08-21 12:35:56,262 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 [2021-08-21 12:35:56,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:56,295 INFO L225 Difference]: With dead ends: 14566 [2021-08-21 12:35:56,295 INFO L226 Difference]: Without dead ends: 14451 [2021-08-21 12:35:56,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4334 ImplicationChecksByTransitivity, 3224.2ms TimeCoverageRelationStatistics Valid=987, Invalid=11445, Unknown=0, NotChecked=0, Total=12432 [2021-08-21 12:35:56,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14451 states. [2021-08-21 12:35:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14451 to 7409. [2021-08-21 12:35:56,449 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) [2021-08-21 12:35:56,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7409 states to 7409 states and 26015 transitions. [2021-08-21 12:35:56,466 INFO L78 Accepts]: Start accepts. Automaton has 7409 states and 26015 transitions. Word has length 47 [2021-08-21 12:35:56,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:56,466 INFO L470 AbstractCegarLoop]: Abstraction has 7409 states and 26015 transitions. [2021-08-21 12:35:56,466 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) [2021-08-21 12:35:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 7409 states and 26015 transitions. [2021-08-21 12:35:56,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:56,478 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:56,478 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:56,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2021-08-21 12:35:56,478 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:56,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:56,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1835879161, now seen corresponding path program 164 times [2021-08-21 12:35:56,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:56,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003674612] [2021-08-21 12:35:56,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:56,479 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:56,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:35:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:35:56,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:35:56,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003674612] [2021-08-21 12:35:56,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003674612] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:35:56,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:35:56,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:35:56,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229374181] [2021-08-21 12:35:56,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:35:56,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:35:56,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:35:56,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:35:56,785 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) [2021-08-21 12:35:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:35:59,582 INFO L93 Difference]: Finished difference Result 11320 states and 39731 transitions. [2021-08-21 12:35:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-08-21 12:35:59,582 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 [2021-08-21 12:35:59,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:35:59,609 INFO L225 Difference]: With dead ends: 11320 [2021-08-21 12:35:59,609 INFO L226 Difference]: Without dead ends: 11220 [2021-08-21 12:35:59,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1537.9ms TimeCoverageRelationStatistics Valid=438, Invalid=4118, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 12:35:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2021-08-21 12:35:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 7418. [2021-08-21 12:35:59,741 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) [2021-08-21 12:35:59,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7418 states to 7418 states and 26037 transitions. [2021-08-21 12:35:59,759 INFO L78 Accepts]: Start accepts. Automaton has 7418 states and 26037 transitions. Word has length 47 [2021-08-21 12:35:59,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:35:59,759 INFO L470 AbstractCegarLoop]: Abstraction has 7418 states and 26037 transitions. [2021-08-21 12:35:59,759 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) [2021-08-21 12:35:59,759 INFO L276 IsEmpty]: Start isEmpty. Operand 7418 states and 26037 transitions. [2021-08-21 12:35:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:35:59,770 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:35:59,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:35:59,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2021-08-21 12:35:59,771 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:35:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:35:59,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1769816603, now seen corresponding path program 165 times [2021-08-21 12:35:59,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:35:59,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137851935] [2021-08-21 12:35:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:35:59,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:35:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:00,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:00,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:00,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137851935] [2021-08-21 12:36:00,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137851935] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:00,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:00,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:36:00,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142094485] [2021-08-21 12:36:00,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:36:00,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:00,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:36:00,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:36:00,147 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) [2021-08-21 12:36:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:04,721 INFO L93 Difference]: Finished difference Result 12752 states and 44502 transitions. [2021-08-21 12:36:04,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-08-21 12:36:04,722 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 [2021-08-21 12:36:04,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:04,752 INFO L225 Difference]: With dead ends: 12752 [2021-08-21 12:36:04,752 INFO L226 Difference]: Without dead ends: 12367 [2021-08-21 12:36:04,753 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 2711.8ms TimeCoverageRelationStatistics Valid=772, Invalid=8348, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 12:36:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2021-08-21 12:36:04,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 7533. [2021-08-21 12:36:04,884 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) [2021-08-21 12:36:04,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7533 states to 7533 states and 26455 transitions. [2021-08-21 12:36:04,901 INFO L78 Accepts]: Start accepts. Automaton has 7533 states and 26455 transitions. Word has length 47 [2021-08-21 12:36:04,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:04,901 INFO L470 AbstractCegarLoop]: Abstraction has 7533 states and 26455 transitions. [2021-08-21 12:36:04,901 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) [2021-08-21 12:36:04,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7533 states and 26455 transitions. [2021-08-21 12:36:04,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:04,913 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:04,913 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:04,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2021-08-21 12:36:04,913 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:04,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:04,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1690028645, now seen corresponding path program 166 times [2021-08-21 12:36:04,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:04,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122131136] [2021-08-21 12:36:04,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:04,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:04,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:05,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:05,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:05,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122131136] [2021-08-21 12:36:05,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122131136] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:05,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:05,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:05,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416687772] [2021-08-21 12:36:05,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:05,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:05,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:05,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:05,311 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) [2021-08-21 12:36:08,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:08,842 INFO L93 Difference]: Finished difference Result 12440 states and 43725 transitions. [2021-08-21 12:36:08,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-08-21 12:36:08,842 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 [2021-08-21 12:36:08,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:08,868 INFO L225 Difference]: With dead ends: 12440 [2021-08-21 12:36:08,868 INFO L226 Difference]: Without dead ends: 12207 [2021-08-21 12:36:08,868 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2174 ImplicationChecksByTransitivity, 2044.2ms TimeCoverageRelationStatistics Valid=617, Invalid=6355, Unknown=0, NotChecked=0, Total=6972 [2021-08-21 12:36:08,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12207 states. [2021-08-21 12:36:08,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12207 to 7643. [2021-08-21 12:36:08,995 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) [2021-08-21 12:36:09,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7643 states to 7643 states and 26830 transitions. [2021-08-21 12:36:09,014 INFO L78 Accepts]: Start accepts. Automaton has 7643 states and 26830 transitions. Word has length 47 [2021-08-21 12:36:09,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:09,014 INFO L470 AbstractCegarLoop]: Abstraction has 7643 states and 26830 transitions. [2021-08-21 12:36:09,014 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) [2021-08-21 12:36:09,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7643 states and 26830 transitions. [2021-08-21 12:36:09,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:09,026 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:09,026 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:09,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2021-08-21 12:36:09,027 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:09,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1254190047, now seen corresponding path program 167 times [2021-08-21 12:36:09,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932297787] [2021-08-21 12:36:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:09,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:09,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:09,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:09,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932297787] [2021-08-21 12:36:09,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932297787] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:09,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:09,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:09,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796716076] [2021-08-21 12:36:09,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:09,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:09,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:09,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:09,299 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) [2021-08-21 12:36:14,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:14,023 INFO L93 Difference]: Finished difference Result 13721 states and 48302 transitions. [2021-08-21 12:36:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-08-21 12:36:14,024 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 [2021-08-21 12:36:14,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:14,055 INFO L225 Difference]: With dead ends: 13721 [2021-08-21 12:36:14,055 INFO L226 Difference]: Without dead ends: 13526 [2021-08-21 12:36:14,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3788 ImplicationChecksByTransitivity, 2870.1ms TimeCoverageRelationStatistics Valid=942, Invalid=9978, Unknown=0, NotChecked=0, Total=10920 [2021-08-21 12:36:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13526 states. [2021-08-21 12:36:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13526 to 7823. [2021-08-21 12:36:14,205 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) [2021-08-21 12:36:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7823 states to 7823 states and 27514 transitions. [2021-08-21 12:36:14,223 INFO L78 Accepts]: Start accepts. Automaton has 7823 states and 27514 transitions. Word has length 47 [2021-08-21 12:36:14,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:14,223 INFO L470 AbstractCegarLoop]: Abstraction has 7823 states and 27514 transitions. [2021-08-21 12:36:14,223 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) [2021-08-21 12:36:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 7823 states and 27514 transitions. [2021-08-21 12:36:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:14,236 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:14,236 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:14,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2021-08-21 12:36:14,236 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:14,236 INFO L82 PathProgramCache]: Analyzing trace with hash 403538139, now seen corresponding path program 168 times [2021-08-21 12:36:14,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:14,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291852320] [2021-08-21 12:36:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:14,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:14,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:14,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291852320] [2021-08-21 12:36:14,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291852320] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:14,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:14,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:14,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020358757] [2021-08-21 12:36:14,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:14,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:14,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:14,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:14,603 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) [2021-08-21 12:36:20,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:20,277 INFO L93 Difference]: Finished difference Result 15923 states and 56409 transitions. [2021-08-21 12:36:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-08-21 12:36:20,277 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 [2021-08-21 12:36:20,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:20,315 INFO L225 Difference]: With dead ends: 15923 [2021-08-21 12:36:20,315 INFO L226 Difference]: Without dead ends: 15714 [2021-08-21 12:36:20,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6137 ImplicationChecksByTransitivity, 3612.2ms TimeCoverageRelationStatistics Valid=1257, Invalid=15255, Unknown=0, NotChecked=0, Total=16512 [2021-08-21 12:36:20,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15714 states. [2021-08-21 12:36:20,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15714 to 7927. [2021-08-21 12:36:20,481 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) [2021-08-21 12:36:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27876 transitions. [2021-08-21 12:36:20,500 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27876 transitions. Word has length 47 [2021-08-21 12:36:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:20,500 INFO L470 AbstractCegarLoop]: Abstraction has 7927 states and 27876 transitions. [2021-08-21 12:36:20,500 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) [2021-08-21 12:36:20,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27876 transitions. [2021-08-21 12:36:20,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:20,547 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:20,547 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:20,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2021-08-21 12:36:20,548 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:20,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1715621605, now seen corresponding path program 169 times [2021-08-21 12:36:20,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:20,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645855327] [2021-08-21 12:36:20,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:20,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:20,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:20,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:20,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645855327] [2021-08-21 12:36:20,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645855327] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:20,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:20,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:36:20,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748092304] [2021-08-21 12:36:20,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:36:20,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:20,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:36:20,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:36:20,839 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) [2021-08-21 12:36:24,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:24,336 INFO L93 Difference]: Finished difference Result 11868 states and 41423 transitions. [2021-08-21 12:36:24,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-21 12:36:24,336 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 [2021-08-21 12:36:24,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:24,362 INFO L225 Difference]: With dead ends: 11868 [2021-08-21 12:36:24,363 INFO L226 Difference]: Without dead ends: 11625 [2021-08-21 12:36:24,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2223 ImplicationChecksByTransitivity, 2061.5ms TimeCoverageRelationStatistics Valid=626, Invalid=6180, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 12:36:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2021-08-21 12:36:24,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 8215. [2021-08-21 12:36:24,496 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) [2021-08-21 12:36:24,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8215 states to 8215 states and 28893 transitions. [2021-08-21 12:36:24,516 INFO L78 Accepts]: Start accepts. Automaton has 8215 states and 28893 transitions. Word has length 47 [2021-08-21 12:36:24,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:24,517 INFO L470 AbstractCegarLoop]: Abstraction has 8215 states and 28893 transitions. [2021-08-21 12:36:24,517 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) [2021-08-21 12:36:24,517 INFO L276 IsEmpty]: Start isEmpty. Operand 8215 states and 28893 transitions. [2021-08-21 12:36:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:24,531 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:24,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:24,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2021-08-21 12:36:24,532 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:24,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:24,532 INFO L82 PathProgramCache]: Analyzing trace with hash 600471229, now seen corresponding path program 170 times [2021-08-21 12:36:24,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:24,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221212208] [2021-08-21 12:36:24,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:24,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:24,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221212208] [2021-08-21 12:36:24,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221212208] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:24,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:24,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:24,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828126048] [2021-08-21 12:36:24,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:24,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:24,861 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) [2021-08-21 12:36:30,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:30,327 INFO L93 Difference]: Finished difference Result 14645 states and 51587 transitions. [2021-08-21 12:36:30,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-08-21 12:36:30,327 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 [2021-08-21 12:36:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:30,362 INFO L225 Difference]: With dead ends: 14645 [2021-08-21 12:36:30,363 INFO L226 Difference]: Without dead ends: 14402 [2021-08-21 12:36:30,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4239 ImplicationChecksByTransitivity, 3421.2ms TimeCoverageRelationStatistics Valid=985, Invalid=11005, Unknown=0, NotChecked=0, Total=11990 [2021-08-21 12:36:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2021-08-21 12:36:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 8211. [2021-08-21 12:36:30,584 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) [2021-08-21 12:36:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8211 states to 8211 states and 28954 transitions. [2021-08-21 12:36:30,604 INFO L78 Accepts]: Start accepts. Automaton has 8211 states and 28954 transitions. Word has length 47 [2021-08-21 12:36:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:30,605 INFO L470 AbstractCegarLoop]: Abstraction has 8211 states and 28954 transitions. [2021-08-21 12:36:30,605 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) [2021-08-21 12:36:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 8211 states and 28954 transitions. [2021-08-21 12:36:30,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:30,619 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:30,619 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:30,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2021-08-21 12:36:30,620 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:30,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:30,620 INFO L82 PathProgramCache]: Analyzing trace with hash -250180679, now seen corresponding path program 171 times [2021-08-21 12:36:30,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:30,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785348880] [2021-08-21 12:36:30,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:30,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:30,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:30,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785348880] [2021-08-21 12:36:30,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785348880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:30,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:30,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:30,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381332155] [2021-08-21 12:36:30,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:30,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:30,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:30,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:30,932 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) [2021-08-21 12:36:36,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:36,874 INFO L93 Difference]: Finished difference Result 15299 states and 54095 transitions. [2021-08-21 12:36:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2021-08-21 12:36:36,874 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 [2021-08-21 12:36:36,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:36,912 INFO L225 Difference]: With dead ends: 15299 [2021-08-21 12:36:36,912 INFO L226 Difference]: Without dead ends: 14982 [2021-08-21 12:36:36,914 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5291 ImplicationChecksByTransitivity, 3722.2ms TimeCoverageRelationStatistics Valid=1124, Invalid=13396, Unknown=0, NotChecked=0, Total=14520 [2021-08-21 12:36:36,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14982 states. [2021-08-21 12:36:37,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14982 to 7895. [2021-08-21 12:36:37,152 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) [2021-08-21 12:36:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 27826 transitions. [2021-08-21 12:36:37,171 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 27826 transitions. Word has length 47 [2021-08-21 12:36:37,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:37,171 INFO L470 AbstractCegarLoop]: Abstraction has 7895 states and 27826 transitions. [2021-08-21 12:36:37,172 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) [2021-08-21 12:36:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 27826 transitions. [2021-08-21 12:36:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:37,185 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:37,185 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:37,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2021-08-21 12:36:37,185 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:37,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:37,185 INFO L82 PathProgramCache]: Analyzing trace with hash 172664765, now seen corresponding path program 172 times [2021-08-21 12:36:37,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:37,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127683467] [2021-08-21 12:36:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:37,205 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:37,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:37,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127683467] [2021-08-21 12:36:37,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127683467] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:37,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:37,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:36:37,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961445304] [2021-08-21 12:36:37,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:36:37,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:36:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:36:37,638 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) [2021-08-21 12:36:41,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:41,836 INFO L93 Difference]: Finished difference Result 13242 states and 46560 transitions. [2021-08-21 12:36:41,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-08-21 12:36:41,836 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 [2021-08-21 12:36:41,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:41,866 INFO L225 Difference]: With dead ends: 13242 [2021-08-21 12:36:41,866 INFO L226 Difference]: Without dead ends: 13115 [2021-08-21 12:36:41,867 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2722 ImplicationChecksByTransitivity, 2467.5ms TimeCoverageRelationStatistics Valid=709, Invalid=7847, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 12:36:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2021-08-21 12:36:41,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 7909. [2021-08-21 12:36:42,003 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) [2021-08-21 12:36:42,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 27864 transitions. [2021-08-21 12:36:42,021 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 27864 transitions. Word has length 47 [2021-08-21 12:36:42,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:42,022 INFO L470 AbstractCegarLoop]: Abstraction has 7909 states and 27864 transitions. [2021-08-21 12:36:42,022 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) [2021-08-21 12:36:42,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 27864 transitions. [2021-08-21 12:36:42,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:42,034 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:42,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2021-08-21 12:36:42,035 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:42,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1178083839, now seen corresponding path program 173 times [2021-08-21 12:36:42,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:42,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575456749] [2021-08-21 12:36:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:42,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:42,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:42,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575456749] [2021-08-21 12:36:42,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575456749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:42,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:42,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:36:42,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831646567] [2021-08-21 12:36:42,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:36:42,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:42,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:36:42,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:36:42,370 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) [2021-08-21 12:36:47,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:47,517 INFO L93 Difference]: Finished difference Result 14419 states and 50788 transitions. [2021-08-21 12:36:47,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-08-21 12:36:47,518 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 [2021-08-21 12:36:47,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:47,551 INFO L225 Difference]: With dead ends: 14419 [2021-08-21 12:36:47,551 INFO L226 Difference]: Without dead ends: 14330 [2021-08-21 12:36:47,552 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 3243.1ms TimeCoverageRelationStatistics Valid=1025, Invalid=11407, Unknown=0, NotChecked=0, Total=12432 [2021-08-21 12:36:47,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14330 states. [2021-08-21 12:36:47,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14330 to 7917. [2021-08-21 12:36:47,700 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) [2021-08-21 12:36:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 27894 transitions. [2021-08-21 12:36:47,719 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 27894 transitions. Word has length 47 [2021-08-21 12:36:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:47,719 INFO L470 AbstractCegarLoop]: Abstraction has 7917 states and 27894 transitions. [2021-08-21 12:36:47,719 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) [2021-08-21 12:36:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 27894 transitions. [2021-08-21 12:36:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:47,731 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:47,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:47,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2021-08-21 12:36:47,732 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:47,732 INFO L82 PathProgramCache]: Analyzing trace with hash -2028735747, now seen corresponding path program 174 times [2021-08-21 12:36:47,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:47,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118441737] [2021-08-21 12:36:47,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:47,732 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:48,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:48,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:48,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118441737] [2021-08-21 12:36:48,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118441737] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:48,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:48,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:36:48,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688886225] [2021-08-21 12:36:48,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:36:48,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:48,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:36:48,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:36:48,013 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) [2021-08-21 12:36:53,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:53,618 INFO L93 Difference]: Finished difference Result 16386 states and 58025 transitions. [2021-08-21 12:36:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-08-21 12:36:53,618 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 [2021-08-21 12:36:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:53,658 INFO L225 Difference]: With dead ends: 16386 [2021-08-21 12:36:53,658 INFO L226 Difference]: Without dead ends: 16283 [2021-08-21 12:36:53,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7527 ImplicationChecksByTransitivity, 3465.9ms TimeCoverageRelationStatistics Valid=1451, Invalid=18571, Unknown=0, NotChecked=0, Total=20022 [2021-08-21 12:36:53,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16283 states. [2021-08-21 12:36:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16283 to 7923. [2021-08-21 12:36:53,827 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) [2021-08-21 12:36:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7923 states to 7923 states and 27926 transitions. [2021-08-21 12:36:53,846 INFO L78 Accepts]: Start accepts. Automaton has 7923 states and 27926 transitions. Word has length 47 [2021-08-21 12:36:53,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:53,846 INFO L470 AbstractCegarLoop]: Abstraction has 7923 states and 27926 transitions. [2021-08-21 12:36:53,846 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) [2021-08-21 12:36:53,846 INFO L276 IsEmpty]: Start isEmpty. Operand 7923 states and 27926 transitions. [2021-08-21 12:36:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:53,859 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:53,859 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:53,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2021-08-21 12:36:53,859 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:53,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:53,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1714588123, now seen corresponding path program 175 times [2021-08-21 12:36:53,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:53,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021062923] [2021-08-21 12:36:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:53,860 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:54,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:54,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021062923] [2021-08-21 12:36:54,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021062923] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:54,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:54,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:36:54,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275192137] [2021-08-21 12:36:54,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:36:54,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:54,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:36:54,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:36:54,206 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) [2021-08-21 12:36:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:36:57,416 INFO L93 Difference]: Finished difference Result 12451 states and 43758 transitions. [2021-08-21 12:36:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-08-21 12:36:57,417 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 [2021-08-21 12:36:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:36:57,446 INFO L225 Difference]: With dead ends: 12451 [2021-08-21 12:36:57,446 INFO L226 Difference]: Without dead ends: 12324 [2021-08-21 12:36:57,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1927 ImplicationChecksByTransitivity, 1762.1ms TimeCoverageRelationStatistics Valid=565, Invalid=5915, Unknown=0, NotChecked=0, Total=6480 [2021-08-21 12:36:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12324 states. [2021-08-21 12:36:57,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12324 to 7939. [2021-08-21 12:36:57,639 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) [2021-08-21 12:36:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 27966 transitions. [2021-08-21 12:36:57,656 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 27966 transitions. Word has length 47 [2021-08-21 12:36:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:36:57,656 INFO L470 AbstractCegarLoop]: Abstraction has 7939 states and 27966 transitions. [2021-08-21 12:36:57,656 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) [2021-08-21 12:36:57,656 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 27966 transitions. [2021-08-21 12:36:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:36:57,669 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:36:57,669 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:36:57,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2021-08-21 12:36:57,669 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:36:57,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:36:57,670 INFO L82 PathProgramCache]: Analyzing trace with hash -753007913, now seen corresponding path program 176 times [2021-08-21 12:36:57,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:36:57,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279869545] [2021-08-21 12:36:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:36:57,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:36:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:36:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:36:58,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:36:58,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279869545] [2021-08-21 12:36:58,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279869545] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:36:58,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:36:58,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:36:58,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840205504] [2021-08-21 12:36:58,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:36:58,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:36:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:36:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:36:58,012 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) [2021-08-21 12:37:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:00,187 INFO L93 Difference]: Finished difference Result 10213 states and 35694 transitions. [2021-08-21 12:37:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-08-21 12:37:00,187 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 [2021-08-21 12:37:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:00,212 INFO L225 Difference]: With dead ends: 10213 [2021-08-21 12:37:00,213 INFO L226 Difference]: Without dead ends: 10116 [2021-08-21 12:37:00,213 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 920 ImplicationChecksByTransitivity, 1238.5ms TimeCoverageRelationStatistics Valid=331, Invalid=3209, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 12:37:00,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10116 states. [2021-08-21 12:37:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10116 to 7945. [2021-08-21 12:37:00,351 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) [2021-08-21 12:37:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27981 transitions. [2021-08-21 12:37:00,372 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27981 transitions. Word has length 47 [2021-08-21 12:37:00,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:00,372 INFO L470 AbstractCegarLoop]: Abstraction has 7945 states and 27981 transitions. [2021-08-21 12:37:00,372 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) [2021-08-21 12:37:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27981 transitions. [2021-08-21 12:37:00,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:00,439 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:00,439 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:00,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2021-08-21 12:37:00,439 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:00,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:00,439 INFO L82 PathProgramCache]: Analyzing trace with hash -750334087, now seen corresponding path program 177 times [2021-08-21 12:37:00,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:00,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282217299] [2021-08-21 12:37:00,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:00,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:00,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:00,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282217299] [2021-08-21 12:37:00,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282217299] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:00,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:00,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:00,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094790374] [2021-08-21 12:37:00,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:00,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:00,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:00,782 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) [2021-08-21 12:37:04,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:04,751 INFO L93 Difference]: Finished difference Result 11804 states and 41393 transitions. [2021-08-21 12:37:04,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-08-21 12:37:04,752 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 [2021-08-21 12:37:04,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:04,777 INFO L225 Difference]: With dead ends: 11804 [2021-08-21 12:37:04,777 INFO L226 Difference]: Without dead ends: 11695 [2021-08-21 12:37:04,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2735 ImplicationChecksByTransitivity, 2503.8ms TimeCoverageRelationStatistics Valid=808, Invalid=7748, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 12:37:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11695 states. [2021-08-21 12:37:04,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11695 to 7927. [2021-08-21 12:37:04,909 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) [2021-08-21 12:37:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7927 states to 7927 states and 27932 transitions. [2021-08-21 12:37:04,927 INFO L78 Accepts]: Start accepts. Automaton has 7927 states and 27932 transitions. Word has length 47 [2021-08-21 12:37:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:04,927 INFO L470 AbstractCegarLoop]: Abstraction has 7927 states and 27932 transitions. [2021-08-21 12:37:04,927 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) [2021-08-21 12:37:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 7927 states and 27932 transitions. [2021-08-21 12:37:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:04,940 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:04,940 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:04,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2021-08-21 12:37:04,940 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:04,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:04,940 INFO L82 PathProgramCache]: Analyzing trace with hash -2058805759, now seen corresponding path program 178 times [2021-08-21 12:37:04,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:04,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002783449] [2021-08-21 12:37:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:04,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:05,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:05,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002783449] [2021-08-21 12:37:05,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002783449] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:05,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:05,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:05,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779145200] [2021-08-21 12:37:05,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:05,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:05,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:05,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:05,272 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) [2021-08-21 12:37:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:08,380 INFO L93 Difference]: Finished difference Result 10895 states and 37971 transitions. [2021-08-21 12:37:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-21 12:37:08,381 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 [2021-08-21 12:37:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:08,404 INFO L225 Difference]: With dead ends: 10895 [2021-08-21 12:37:08,404 INFO L226 Difference]: Without dead ends: 10774 [2021-08-21 12:37:08,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1602 ImplicationChecksByTransitivity, 1782.7ms TimeCoverageRelationStatistics Valid=487, Invalid=5063, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 12:37:08,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10774 states. [2021-08-21 12:37:08,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10774 to 7945. [2021-08-21 12:37:08,528 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) [2021-08-21 12:37:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7945 states to 7945 states and 27993 transitions. [2021-08-21 12:37:08,546 INFO L78 Accepts]: Start accepts. Automaton has 7945 states and 27993 transitions. Word has length 47 [2021-08-21 12:37:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:08,546 INFO L470 AbstractCegarLoop]: Abstraction has 7945 states and 27993 transitions. [2021-08-21 12:37:08,546 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) [2021-08-21 12:37:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7945 states and 27993 transitions. [2021-08-21 12:37:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:08,560 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:08,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:08,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2021-08-21 12:37:08,560 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:08,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:08,560 INFO L82 PathProgramCache]: Analyzing trace with hash -487384323, now seen corresponding path program 179 times [2021-08-21 12:37:08,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:08,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594217482] [2021-08-21 12:37:08,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:08,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:08,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:08,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:08,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594217482] [2021-08-21 12:37:08,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594217482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:08,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:08,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:08,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527697719] [2021-08-21 12:37:08,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:08,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:08,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:08,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:08,884 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) [2021-08-21 12:37:14,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:14,813 INFO L93 Difference]: Finished difference Result 14844 states and 52008 transitions. [2021-08-21 12:37:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-08-21 12:37:14,813 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 [2021-08-21 12:37:14,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:14,846 INFO L225 Difference]: With dead ends: 14844 [2021-08-21 12:37:14,847 INFO L226 Difference]: Without dead ends: 14749 [2021-08-21 12:37:14,848 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5883 ImplicationChecksByTransitivity, 3622.5ms TimeCoverageRelationStatistics Valid=1227, Invalid=15029, Unknown=0, NotChecked=0, Total=16256 [2021-08-21 12:37:14,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14749 states. [2021-08-21 12:37:14,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14749 to 7949. [2021-08-21 12:37:15,002 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) [2021-08-21 12:37:15,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7949 states to 7949 states and 28007 transitions. [2021-08-21 12:37:15,021 INFO L78 Accepts]: Start accepts. Automaton has 7949 states and 28007 transitions. Word has length 47 [2021-08-21 12:37:15,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:15,021 INFO L470 AbstractCegarLoop]: Abstraction has 7949 states and 28007 transitions. [2021-08-21 12:37:15,021 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) [2021-08-21 12:37:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 7949 states and 28007 transitions. [2021-08-21 12:37:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:15,035 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:15,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:15,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2021-08-21 12:37:15,035 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:15,035 INFO L82 PathProgramCache]: Analyzing trace with hash -188492645, now seen corresponding path program 180 times [2021-08-21 12:37:15,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:15,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272739580] [2021-08-21 12:37:15,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:15,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:15,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:15,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272739580] [2021-08-21 12:37:15,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272739580] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:15,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:15,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:37:15,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778739935] [2021-08-21 12:37:15,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:37:15,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:37:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:37:15,358 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) [2021-08-21 12:37:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:17,637 INFO L93 Difference]: Finished difference Result 10225 states and 35738 transitions. [2021-08-21 12:37:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 12:37:17,638 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 [2021-08-21 12:37:17,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:17,659 INFO L225 Difference]: With dead ends: 10225 [2021-08-21 12:37:17,659 INFO L226 Difference]: Without dead ends: 10128 [2021-08-21 12:37:17,660 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 1270.2ms TimeCoverageRelationStatistics Valid=340, Invalid=3200, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 12:37:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10128 states. [2021-08-21 12:37:17,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10128 to 7957. [2021-08-21 12:37:17,779 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) [2021-08-21 12:37:17,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7957 states to 7957 states and 28025 transitions. [2021-08-21 12:37:17,802 INFO L78 Accepts]: Start accepts. Automaton has 7957 states and 28025 transitions. Word has length 47 [2021-08-21 12:37:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:17,802 INFO L470 AbstractCegarLoop]: Abstraction has 7957 states and 28025 transitions. [2021-08-21 12:37:17,802 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) [2021-08-21 12:37:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 7957 states and 28025 transitions. [2021-08-21 12:37:17,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:17,816 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:17,816 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:17,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2021-08-21 12:37:17,816 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:17,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:17,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1913913155, now seen corresponding path program 181 times [2021-08-21 12:37:17,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:17,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546028871] [2021-08-21 12:37:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:17,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:18,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:18,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:18,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546028871] [2021-08-21 12:37:18,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546028871] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:18,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:18,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:18,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004600027] [2021-08-21 12:37:18,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:18,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:18,145 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) [2021-08-21 12:37:24,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:24,131 INFO L93 Difference]: Finished difference Result 15322 states and 53658 transitions. [2021-08-21 12:37:24,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-08-21 12:37:24,132 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 [2021-08-21 12:37:24,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:24,166 INFO L225 Difference]: With dead ends: 15322 [2021-08-21 12:37:24,166 INFO L226 Difference]: Without dead ends: 15092 [2021-08-21 12:37:24,167 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6884 ImplicationChecksByTransitivity, 3951.9ms TimeCoverageRelationStatistics Valid=1516, Invalid=17116, Unknown=0, NotChecked=0, Total=18632 [2021-08-21 12:37:24,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2021-08-21 12:37:24,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 8232. [2021-08-21 12:37:24,333 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) [2021-08-21 12:37:24,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8232 states to 8232 states and 29099 transitions. [2021-08-21 12:37:24,352 INFO L78 Accepts]: Start accepts. Automaton has 8232 states and 29099 transitions. Word has length 47 [2021-08-21 12:37:24,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:24,353 INFO L470 AbstractCegarLoop]: Abstraction has 8232 states and 29099 transitions. [2021-08-21 12:37:24,353 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) [2021-08-21 12:37:24,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8232 states and 29099 transitions. [2021-08-21 12:37:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:24,366 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:24,366 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:24,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2021-08-21 12:37:24,366 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash 156697947, now seen corresponding path program 182 times [2021-08-21 12:37:24,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:24,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716707702] [2021-08-21 12:37:24,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:24,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:24,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:24,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:24,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716707702] [2021-08-21 12:37:24,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716707702] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:24,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:24,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:37:24,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345756158] [2021-08-21 12:37:24,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:37:24,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:24,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:37:24,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:37:24,753 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) [2021-08-21 12:37:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:27,343 INFO L93 Difference]: Finished difference Result 10831 states and 38019 transitions. [2021-08-21 12:37:27,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 12:37:27,344 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 [2021-08-21 12:37:27,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:27,368 INFO L225 Difference]: With dead ends: 10831 [2021-08-21 12:37:27,368 INFO L226 Difference]: Without dead ends: 10694 [2021-08-21 12:37:27,368 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1527.9ms TimeCoverageRelationStatistics Valid=411, Invalid=4011, Unknown=0, NotChecked=0, Total=4422 [2021-08-21 12:37:27,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2021-08-21 12:37:27,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 8250. [2021-08-21 12:37:27,494 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) [2021-08-21 12:37:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29144 transitions. [2021-08-21 12:37:27,513 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29144 transitions. Word has length 47 [2021-08-21 12:37:27,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:27,514 INFO L470 AbstractCegarLoop]: Abstraction has 8250 states and 29144 transitions. [2021-08-21 12:37:27,514 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) [2021-08-21 12:37:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29144 transitions. [2021-08-21 12:37:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:27,527 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:27,527 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:27,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2021-08-21 12:37:27,528 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash -652242661, now seen corresponding path program 183 times [2021-08-21 12:37:27,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:27,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025532331] [2021-08-21 12:37:27,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:27,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:27,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:27,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:27,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025532331] [2021-08-21 12:37:27,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025532331] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:27,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:27,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:27,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378300225] [2021-08-21 12:37:27,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:27,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:27,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:27,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:27,852 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) [2021-08-21 12:37:30,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:30,798 INFO L93 Difference]: Finished difference Result 10815 states and 37951 transitions. [2021-08-21 12:37:30,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-21 12:37:30,798 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 [2021-08-21 12:37:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:30,823 INFO L225 Difference]: With dead ends: 10815 [2021-08-21 12:37:30,823 INFO L226 Difference]: Without dead ends: 10670 [2021-08-21 12:37:30,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1345 ImplicationChecksByTransitivity, 1591.2ms TimeCoverageRelationStatistics Valid=427, Invalid=4403, Unknown=0, NotChecked=0, Total=4830 [2021-08-21 12:37:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10670 states. [2021-08-21 12:37:30,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10670 to 8250. [2021-08-21 12:37:30,959 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) [2021-08-21 12:37:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8250 states to 8250 states and 29138 transitions. [2021-08-21 12:37:30,979 INFO L78 Accepts]: Start accepts. Automaton has 8250 states and 29138 transitions. Word has length 47 [2021-08-21 12:37:30,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:30,979 INFO L470 AbstractCegarLoop]: Abstraction has 8250 states and 29138 transitions. [2021-08-21 12:37:30,979 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) [2021-08-21 12:37:30,979 INFO L276 IsEmpty]: Start isEmpty. Operand 8250 states and 29138 transitions. [2021-08-21 12:37:30,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:30,993 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:30,993 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:30,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2021-08-21 12:37:30,993 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:30,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:30,994 INFO L82 PathProgramCache]: Analyzing trace with hash 247653117, now seen corresponding path program 184 times [2021-08-21 12:37:30,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:30,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898301777] [2021-08-21 12:37:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:30,994 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:31,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:31,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898301777] [2021-08-21 12:37:31,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898301777] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:31,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:31,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:31,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657738108] [2021-08-21 12:37:31,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:31,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:31,326 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) [2021-08-21 12:37:37,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:37,655 INFO L93 Difference]: Finished difference Result 15896 states and 56270 transitions. [2021-08-21 12:37:37,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-08-21 12:37:37,655 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 [2021-08-21 12:37:37,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:37,693 INFO L225 Difference]: With dead ends: 15896 [2021-08-21 12:37:37,693 INFO L226 Difference]: Without dead ends: 15759 [2021-08-21 12:37:37,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6381 ImplicationChecksByTransitivity, 3946.2ms TimeCoverageRelationStatistics Valid=1245, Invalid=16047, Unknown=0, NotChecked=0, Total=17292 [2021-08-21 12:37:37,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2021-08-21 12:37:37,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 8399. [2021-08-21 12:37:37,867 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) [2021-08-21 12:37:37,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8399 states to 8399 states and 29714 transitions. [2021-08-21 12:37:37,887 INFO L78 Accepts]: Start accepts. Automaton has 8399 states and 29714 transitions. Word has length 47 [2021-08-21 12:37:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:37,888 INFO L470 AbstractCegarLoop]: Abstraction has 8399 states and 29714 transitions. [2021-08-21 12:37:37,888 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) [2021-08-21 12:37:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 8399 states and 29714 transitions. [2021-08-21 12:37:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:37,901 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:37,902 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:37,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2021-08-21 12:37:37,902 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:37,902 INFO L82 PathProgramCache]: Analyzing trace with hash -602998791, now seen corresponding path program 185 times [2021-08-21 12:37:37,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:37,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796203880] [2021-08-21 12:37:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:37,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:37,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:38,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:38,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796203880] [2021-08-21 12:37:38,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796203880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:38,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:38,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:38,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741378408] [2021-08-21 12:37:38,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:38,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:38,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:38,243 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) [2021-08-21 12:37:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:43,949 INFO L93 Difference]: Finished difference Result 16821 states and 59650 transitions. [2021-08-21 12:37:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2021-08-21 12:37:43,950 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 [2021-08-21 12:37:43,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:43,989 INFO L225 Difference]: With dead ends: 16821 [2021-08-21 12:37:43,989 INFO L226 Difference]: Without dead ends: 16561 [2021-08-21 12:37:43,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7651 ImplicationChecksByTransitivity, 3503.5ms TimeCoverageRelationStatistics Valid=1423, Invalid=18883, Unknown=0, NotChecked=0, Total=20306 [2021-08-21 12:37:44,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16561 states. [2021-08-21 12:37:44,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16561 to 8241. [2021-08-21 12:37:44,212 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) [2021-08-21 12:37:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2021-08-21 12:37:44,231 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2021-08-21 12:37:44,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:44,231 INFO L470 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2021-08-21 12:37:44,231 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) [2021-08-21 12:37:44,231 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2021-08-21 12:37:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:44,245 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:44,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:44,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2021-08-21 12:37:44,246 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:44,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:44,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1077602655, now seen corresponding path program 186 times [2021-08-21 12:37:44,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:44,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409039183] [2021-08-21 12:37:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:44,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:44,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:44,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409039183] [2021-08-21 12:37:44,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409039183] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:44,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:44,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:44,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571096549] [2021-08-21 12:37:44,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:44,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:44,476 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) [2021-08-21 12:37:46,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:46,587 INFO L93 Difference]: Finished difference Result 11022 states and 38552 transitions. [2021-08-21 12:37:46,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-21 12:37:46,588 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 [2021-08-21 12:37:46,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:46,613 INFO L225 Difference]: With dead ends: 11022 [2021-08-21 12:37:46,613 INFO L226 Difference]: Without dead ends: 10901 [2021-08-21 12:37:46,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 1153.1ms TimeCoverageRelationStatistics Valid=477, Invalid=5073, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 12:37:46,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10901 states. [2021-08-21 12:37:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10901 to 8241. [2021-08-21 12:37:46,736 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) [2021-08-21 12:37:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8241 states to 8241 states and 29114 transitions. [2021-08-21 12:37:46,756 INFO L78 Accepts]: Start accepts. Automaton has 8241 states and 29114 transitions. Word has length 47 [2021-08-21 12:37:46,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:46,756 INFO L470 AbstractCegarLoop]: Abstraction has 8241 states and 29114 transitions. [2021-08-21 12:37:46,756 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) [2021-08-21 12:37:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 8241 states and 29114 transitions. [2021-08-21 12:37:46,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:46,770 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:46,770 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:46,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2021-08-21 12:37:46,770 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:46,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1645943205, now seen corresponding path program 187 times [2021-08-21 12:37:46,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:46,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152776961] [2021-08-21 12:37:46,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:46,771 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:47,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:47,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:47,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152776961] [2021-08-21 12:37:47,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152776961] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:47,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:47,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:47,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881881826] [2021-08-21 12:37:47,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:47,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:47,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:47,004 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) [2021-08-21 12:37:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:51,935 INFO L93 Difference]: Finished difference Result 15203 states and 53548 transitions. [2021-08-21 12:37:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-08-21 12:37:51,935 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 [2021-08-21 12:37:51,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:51,977 INFO L225 Difference]: With dead ends: 15203 [2021-08-21 12:37:51,977 INFO L226 Difference]: Without dead ends: 14959 [2021-08-21 12:37:51,978 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6543 ImplicationChecksByTransitivity, 2905.0ms TimeCoverageRelationStatistics Valid=1297, Invalid=16525, Unknown=0, NotChecked=0, Total=17822 [2021-08-21 12:37:52,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14959 states. [2021-08-21 12:37:52,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14959 to 8223. [2021-08-21 12:37:52,157 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) [2021-08-21 12:37:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8223 states to 8223 states and 29063 transitions. [2021-08-21 12:37:52,177 INFO L78 Accepts]: Start accepts. Automaton has 8223 states and 29063 transitions. Word has length 47 [2021-08-21 12:37:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:52,177 INFO L470 AbstractCegarLoop]: Abstraction has 8223 states and 29063 transitions. [2021-08-21 12:37:52,177 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) [2021-08-21 12:37:52,177 INFO L276 IsEmpty]: Start isEmpty. Operand 8223 states and 29063 transitions. [2021-08-21 12:37:52,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:52,191 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:52,191 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:52,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2021-08-21 12:37:52,191 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:52,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:52,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1347051527, now seen corresponding path program 188 times [2021-08-21 12:37:52,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:52,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166010022] [2021-08-21 12:37:52,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:52,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:52,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:52,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:52,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166010022] [2021-08-21 12:37:52,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166010022] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:52,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:52,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:37:52,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128755369] [2021-08-21 12:37:52,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:37:52,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:52,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:37:52,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:37:52,537 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) [2021-08-21 12:37:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:37:54,759 INFO L93 Difference]: Finished difference Result 10368 states and 36385 transitions. [2021-08-21 12:37:54,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-08-21 12:37:54,759 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 [2021-08-21 12:37:54,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:37:54,783 INFO L225 Difference]: With dead ends: 10368 [2021-08-21 12:37:54,783 INFO L226 Difference]: Without dead ends: 10271 [2021-08-21 12:37:54,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1323.1ms TimeCoverageRelationStatistics Valid=340, Invalid=3320, Unknown=0, NotChecked=0, Total=3660 [2021-08-21 12:37:54,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10271 states. [2021-08-21 12:37:54,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10271 to 8237. [2021-08-21 12:37:54,909 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) [2021-08-21 12:37:54,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8237 states to 8237 states and 29090 transitions. [2021-08-21 12:37:54,930 INFO L78 Accepts]: Start accepts. Automaton has 8237 states and 29090 transitions. Word has length 47 [2021-08-21 12:37:54,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:37:54,930 INFO L470 AbstractCegarLoop]: Abstraction has 8237 states and 29090 transitions. [2021-08-21 12:37:54,930 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) [2021-08-21 12:37:54,930 INFO L276 IsEmpty]: Start isEmpty. Operand 8237 states and 29090 transitions. [2021-08-21 12:37:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:37:54,944 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:37:54,944 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:37:54,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2021-08-21 12:37:54,944 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:37:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:37:54,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1222495259, now seen corresponding path program 189 times [2021-08-21 12:37:54,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:37:54,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886672853] [2021-08-21 12:37:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:37:54,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:37:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:37:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:37:55,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:37:55,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886672853] [2021-08-21 12:37:55,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886672853] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:37:55,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:37:55,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:37:55,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969197503] [2021-08-21 12:37:55,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:37:55,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:37:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:37:55,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:37:55,277 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) [2021-08-21 12:38:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:00,673 INFO L93 Difference]: Finished difference Result 15369 states and 53940 transitions. [2021-08-21 12:38:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-08-21 12:38:00,673 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 [2021-08-21 12:38:00,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:00,707 INFO L225 Difference]: With dead ends: 15369 [2021-08-21 12:38:00,708 INFO L226 Difference]: Without dead ends: 14901 [2021-08-21 12:38:00,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5662 ImplicationChecksByTransitivity, 3265.2ms TimeCoverageRelationStatistics Valid=1290, Invalid=14460, Unknown=0, NotChecked=0, Total=15750 [2021-08-21 12:38:00,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14901 states. [2021-08-21 12:38:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14901 to 8363. [2021-08-21 12:38:00,862 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) [2021-08-21 12:38:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8363 states to 8363 states and 29617 transitions. [2021-08-21 12:38:00,882 INFO L78 Accepts]: Start accepts. Automaton has 8363 states and 29617 transitions. Word has length 47 [2021-08-21 12:38:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:00,882 INFO L470 AbstractCegarLoop]: Abstraction has 8363 states and 29617 transitions. [2021-08-21 12:38:00,883 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) [2021-08-21 12:38:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 8363 states and 29617 transitions. [2021-08-21 12:38:00,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:00,896 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:00,896 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:00,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2021-08-21 12:38:00,897 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:00,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash 135347419, now seen corresponding path program 190 times [2021-08-21 12:38:00,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:00,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348984353] [2021-08-21 12:38:00,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:00,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:01,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:01,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:01,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348984353] [2021-08-21 12:38:01,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348984353] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:01,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:01,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:01,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883736480] [2021-08-21 12:38:01,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:01,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:01,122 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) [2021-08-21 12:38:03,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:03,854 INFO L93 Difference]: Finished difference Result 12940 states and 45590 transitions. [2021-08-21 12:38:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-21 12:38:03,854 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 [2021-08-21 12:38:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:03,884 INFO L225 Difference]: With dead ends: 12940 [2021-08-21 12:38:03,884 INFO L226 Difference]: Without dead ends: 12813 [2021-08-21 12:38:03,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1829 ImplicationChecksByTransitivity, 1422.6ms TimeCoverageRelationStatistics Valid=542, Invalid=5620, Unknown=0, NotChecked=0, Total=6162 [2021-08-21 12:38:03,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12813 states. [2021-08-21 12:38:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12813 to 8395. [2021-08-21 12:38:04,031 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) [2021-08-21 12:38:04,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29711 transitions. [2021-08-21 12:38:04,051 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29711 transitions. Word has length 47 [2021-08-21 12:38:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:04,051 INFO L470 AbstractCegarLoop]: Abstraction has 8395 states and 29711 transitions. [2021-08-21 12:38:04,051 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) [2021-08-21 12:38:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29711 transitions. [2021-08-21 12:38:04,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:04,065 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:04,065 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:04,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2021-08-21 12:38:04,065 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:04,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:04,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1235849987, now seen corresponding path program 191 times [2021-08-21 12:38:04,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:04,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693258145] [2021-08-21 12:38:04,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:04,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:04,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:04,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:04,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693258145] [2021-08-21 12:38:04,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693258145] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:04,352 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:04,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:04,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866502167] [2021-08-21 12:38:04,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:04,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:04,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:04,353 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) [2021-08-21 12:38:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:07,478 INFO L93 Difference]: Finished difference Result 12641 states and 44540 transitions. [2021-08-21 12:38:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-21 12:38:07,478 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 [2021-08-21 12:38:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:07,507 INFO L225 Difference]: With dead ends: 12641 [2021-08-21 12:38:07,507 INFO L226 Difference]: Without dead ends: 12541 [2021-08-21 12:38:07,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1780.4ms TimeCoverageRelationStatistics Valid=494, Invalid=4908, Unknown=0, NotChecked=0, Total=5402 [2021-08-21 12:38:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12541 states. [2021-08-21 12:38:07,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12541 to 8422. [2021-08-21 12:38:07,653 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) [2021-08-21 12:38:07,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8422 states to 8422 states and 29777 transitions. [2021-08-21 12:38:07,674 INFO L78 Accepts]: Start accepts. Automaton has 8422 states and 29777 transitions. Word has length 47 [2021-08-21 12:38:07,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:07,674 INFO L470 AbstractCegarLoop]: Abstraction has 8422 states and 29777 transitions. [2021-08-21 12:38:07,675 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) [2021-08-21 12:38:07,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8422 states and 29777 transitions. [2021-08-21 12:38:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:07,689 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:07,689 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:07,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2021-08-21 12:38:07,690 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1624049819, now seen corresponding path program 192 times [2021-08-21 12:38:07,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:07,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993701284] [2021-08-21 12:38:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:07,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:08,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:08,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993701284] [2021-08-21 12:38:08,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993701284] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:08,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:08,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:08,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319368193] [2021-08-21 12:38:08,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:08,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:08,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:08,018 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) [2021-08-21 12:38:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:12,478 INFO L93 Difference]: Finished difference Result 14137 states and 49621 transitions. [2021-08-21 12:38:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-08-21 12:38:12,479 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 [2021-08-21 12:38:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:12,514 INFO L225 Difference]: With dead ends: 14137 [2021-08-21 12:38:12,514 INFO L226 Difference]: Without dead ends: 14019 [2021-08-21 12:38:12,515 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3527 ImplicationChecksByTransitivity, 2600.9ms TimeCoverageRelationStatistics Valid=879, Invalid=9627, Unknown=0, NotChecked=0, Total=10506 [2021-08-21 12:38:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14019 states. [2021-08-21 12:38:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14019 to 8395. [2021-08-21 12:38:12,670 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) [2021-08-21 12:38:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 29707 transitions. [2021-08-21 12:38:12,691 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 29707 transitions. Word has length 47 [2021-08-21 12:38:12,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:12,691 INFO L470 AbstractCegarLoop]: Abstraction has 8395 states and 29707 transitions. [2021-08-21 12:38:12,691 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) [2021-08-21 12:38:12,691 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 29707 transitions. [2021-08-21 12:38:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:12,705 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:12,705 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:12,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2021-08-21 12:38:12,705 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:12,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:12,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2113051135, now seen corresponding path program 193 times [2021-08-21 12:38:12,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:12,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704161308] [2021-08-21 12:38:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:12,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:13,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:13,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:13,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704161308] [2021-08-21 12:38:13,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704161308] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:13,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:13,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:13,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729851796] [2021-08-21 12:38:13,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:13,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:13,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:13,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:13,014 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) [2021-08-21 12:38:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:16,991 INFO L93 Difference]: Finished difference Result 15417 states and 54397 transitions. [2021-08-21 12:38:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-08-21 12:38:16,991 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 [2021-08-21 12:38:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:17,027 INFO L225 Difference]: With dead ends: 15417 [2021-08-21 12:38:17,027 INFO L226 Difference]: Without dead ends: 15312 [2021-08-21 12:38:17,029 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3712 ImplicationChecksByTransitivity, 2375.5ms TimeCoverageRelationStatistics Valid=843, Invalid=10077, Unknown=0, NotChecked=0, Total=10920 [2021-08-21 12:38:17,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15312 states. [2021-08-21 12:38:17,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15312 to 8409. [2021-08-21 12:38:17,281 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) [2021-08-21 12:38:17,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2021-08-21 12:38:17,301 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2021-08-21 12:38:17,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:17,302 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2021-08-21 12:38:17,302 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) [2021-08-21 12:38:17,302 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2021-08-21 12:38:17,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:17,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:17,316 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:17,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2021-08-21 12:38:17,316 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:17,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:17,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1659983361, now seen corresponding path program 194 times [2021-08-21 12:38:17,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:17,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565352721] [2021-08-21 12:38:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:17,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:17,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:17,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565352721] [2021-08-21 12:38:17,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565352721] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:17,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:17,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:17,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568212823] [2021-08-21 12:38:17,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:17,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:17,541 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) [2021-08-21 12:38:19,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:19,753 INFO L93 Difference]: Finished difference Result 12990 states and 45708 transitions. [2021-08-21 12:38:19,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-21 12:38:19,754 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 [2021-08-21 12:38:19,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:19,782 INFO L225 Difference]: With dead ends: 12990 [2021-08-21 12:38:19,782 INFO L226 Difference]: Without dead ends: 12884 [2021-08-21 12:38:19,783 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1272.5ms TimeCoverageRelationStatistics Valid=540, Invalid=5010, Unknown=0, NotChecked=0, Total=5550 [2021-08-21 12:38:19,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12884 states. [2021-08-21 12:38:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12884 to 8409. [2021-08-21 12:38:19,922 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) [2021-08-21 12:38:19,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8409 states to 8409 states and 29751 transitions. [2021-08-21 12:38:19,942 INFO L78 Accepts]: Start accepts. Automaton has 8409 states and 29751 transitions. Word has length 47 [2021-08-21 12:38:19,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:19,942 INFO L470 AbstractCegarLoop]: Abstraction has 8409 states and 29751 transitions. [2021-08-21 12:38:19,942 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) [2021-08-21 12:38:19,942 INFO L276 IsEmpty]: Start isEmpty. Operand 8409 states and 29751 transitions. [2021-08-21 12:38:19,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:19,955 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:19,955 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:19,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2021-08-21 12:38:19,955 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:19,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1018217213, now seen corresponding path program 195 times [2021-08-21 12:38:19,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:19,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409030855] [2021-08-21 12:38:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:19,956 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:20,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:20,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409030855] [2021-08-21 12:38:20,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409030855] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:20,183 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:20,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:20,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088782089] [2021-08-21 12:38:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:20,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:20,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:20,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:20,184 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) [2021-08-21 12:38:25,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:25,571 INFO L93 Difference]: Finished difference Result 17836 states and 63151 transitions. [2021-08-21 12:38:25,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2021-08-21 12:38:25,571 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 [2021-08-21 12:38:25,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:25,614 INFO L225 Difference]: With dead ends: 17836 [2021-08-21 12:38:25,614 INFO L226 Difference]: Without dead ends: 17523 [2021-08-21 12:38:25,615 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6362 ImplicationChecksByTransitivity, 3188.8ms TimeCoverageRelationStatistics Valid=1266, Invalid=16026, Unknown=0, NotChecked=0, Total=17292 [2021-08-21 12:38:25,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17523 states. [2021-08-21 12:38:25,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17523 to 8449. [2021-08-21 12:38:25,799 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) [2021-08-21 12:38:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8449 states to 8449 states and 29902 transitions. [2021-08-21 12:38:25,824 INFO L78 Accepts]: Start accepts. Automaton has 8449 states and 29902 transitions. Word has length 47 [2021-08-21 12:38:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:25,824 INFO L470 AbstractCegarLoop]: Abstraction has 8449 states and 29902 transitions. [2021-08-21 12:38:25,824 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) [2021-08-21 12:38:25,824 INFO L276 IsEmpty]: Start isEmpty. Operand 8449 states and 29902 transitions. [2021-08-21 12:38:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:25,839 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:25,839 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2021-08-21 12:38:25,839 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:25,839 INFO L82 PathProgramCache]: Analyzing trace with hash -434813029, now seen corresponding path program 196 times [2021-08-21 12:38:25,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:25,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519162323] [2021-08-21 12:38:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:25,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:26,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:26,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519162323] [2021-08-21 12:38:26,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519162323] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:26,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:26,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:26,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074794428] [2021-08-21 12:38:26,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:26,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:26,133 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) [2021-08-21 12:38:29,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:29,334 INFO L93 Difference]: Finished difference Result 13381 states and 47204 transitions. [2021-08-21 12:38:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-21 12:38:29,334 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 [2021-08-21 12:38:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:29,368 INFO L225 Difference]: With dead ends: 13381 [2021-08-21 12:38:29,368 INFO L226 Difference]: Without dead ends: 13281 [2021-08-21 12:38:29,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 1796.6ms TimeCoverageRelationStatistics Valid=577, Invalid=5743, Unknown=0, NotChecked=0, Total=6320 [2021-08-21 12:38:29,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13281 states. [2021-08-21 12:38:29,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13281 to 8458. [2021-08-21 12:38:29,521 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) [2021-08-21 12:38:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8458 states to 8458 states and 29924 transitions. [2021-08-21 12:38:29,541 INFO L78 Accepts]: Start accepts. Automaton has 8458 states and 29924 transitions. Word has length 47 [2021-08-21 12:38:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:29,541 INFO L470 AbstractCegarLoop]: Abstraction has 8458 states and 29924 transitions. [2021-08-21 12:38:29,541 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) [2021-08-21 12:38:29,542 INFO L276 IsEmpty]: Start isEmpty. Operand 8458 states and 29924 transitions. [2021-08-21 12:38:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:29,555 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:29,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:29,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2021-08-21 12:38:29,556 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:29,556 INFO L82 PathProgramCache]: Analyzing trace with hash -500875587, now seen corresponding path program 197 times [2021-08-21 12:38:29,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:29,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318324754] [2021-08-21 12:38:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:29,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:29,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:29,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318324754] [2021-08-21 12:38:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318324754] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:29,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:29,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:29,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010453136] [2021-08-21 12:38:29,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:29,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:29,886 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) [2021-08-21 12:38:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:34,394 INFO L93 Difference]: Finished difference Result 14984 states and 52632 transitions. [2021-08-21 12:38:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-08-21 12:38:34,394 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 [2021-08-21 12:38:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:34,430 INFO L225 Difference]: With dead ends: 14984 [2021-08-21 12:38:34,431 INFO L226 Difference]: Without dead ends: 14878 [2021-08-21 12:38:34,431 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4122 ImplicationChecksByTransitivity, 2663.6ms TimeCoverageRelationStatistics Valid=960, Invalid=11030, Unknown=0, NotChecked=0, Total=11990 [2021-08-21 12:38:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2021-08-21 12:38:34,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 8443. [2021-08-21 12:38:34,611 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) [2021-08-21 12:38:34,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8443 states to 8443 states and 29889 transitions. [2021-08-21 12:38:34,631 INFO L78 Accepts]: Start accepts. Automaton has 8443 states and 29889 transitions. Word has length 47 [2021-08-21 12:38:34,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:34,631 INFO L470 AbstractCegarLoop]: Abstraction has 8443 states and 29889 transitions. [2021-08-21 12:38:34,631 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) [2021-08-21 12:38:34,631 INFO L276 IsEmpty]: Start isEmpty. Operand 8443 states and 29889 transitions. [2021-08-21 12:38:34,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:34,645 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:34,645 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:34,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2021-08-21 12:38:34,645 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:34,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:34,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1163588059, now seen corresponding path program 198 times [2021-08-21 12:38:34,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:34,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896931578] [2021-08-21 12:38:34,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:34,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:34,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896931578] [2021-08-21 12:38:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896931578] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:34,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:34,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035633568] [2021-08-21 12:38:34,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:34,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:34,888 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) [2021-08-21 12:38:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:37,117 INFO L93 Difference]: Finished difference Result 12146 states and 42729 transitions. [2021-08-21 12:38:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-08-21 12:38:37,117 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 [2021-08-21 12:38:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:37,145 INFO L225 Difference]: With dead ends: 12146 [2021-08-21 12:38:37,145 INFO L226 Difference]: Without dead ends: 12019 [2021-08-21 12:38:37,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 1103.0ms TimeCoverageRelationStatistics Valid=474, Invalid=4782, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 12:38:37,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12019 states. [2021-08-21 12:38:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12019 to 8465. [2021-08-21 12:38:37,332 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) [2021-08-21 12:38:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29953 transitions. [2021-08-21 12:38:37,358 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29953 transitions. Word has length 47 [2021-08-21 12:38:37,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:37,358 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29953 transitions. [2021-08-21 12:38:37,358 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) [2021-08-21 12:38:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29953 transitions. [2021-08-21 12:38:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:37,376 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:37,376 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:37,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2021-08-21 12:38:37,376 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:37,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1304007977, now seen corresponding path program 199 times [2021-08-21 12:38:37,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:37,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799769768] [2021-08-21 12:38:37,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:37,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:37,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:37,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799769768] [2021-08-21 12:38:37,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799769768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:37,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:37,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:37,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472487960] [2021-08-21 12:38:37,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:37,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:37,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:37,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:37,617 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) [2021-08-21 12:38:39,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:39,455 INFO L93 Difference]: Finished difference Result 11529 states and 40297 transitions. [2021-08-21 12:38:39,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-08-21 12:38:39,455 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 [2021-08-21 12:38:39,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:39,480 INFO L225 Difference]: With dead ends: 11529 [2021-08-21 12:38:39,480 INFO L226 Difference]: Without dead ends: 11432 [2021-08-21 12:38:39,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1013.4ms TimeCoverageRelationStatistics Valid=418, Invalid=4138, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 12:38:39,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11432 states. [2021-08-21 12:38:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11432 to 8483. [2021-08-21 12:38:39,624 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) [2021-08-21 12:38:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8483 states to 8483 states and 29998 transitions. [2021-08-21 12:38:39,646 INFO L78 Accepts]: Start accepts. Automaton has 8483 states and 29998 transitions. Word has length 47 [2021-08-21 12:38:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:39,646 INFO L470 AbstractCegarLoop]: Abstraction has 8483 states and 29998 transitions. [2021-08-21 12:38:39,646 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) [2021-08-21 12:38:39,646 INFO L276 IsEmpty]: Start isEmpty. Operand 8483 states and 29998 transitions. [2021-08-21 12:38:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:39,661 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:39,661 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:39,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2021-08-21 12:38:39,662 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1301334151, now seen corresponding path program 200 times [2021-08-21 12:38:39,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:39,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973626592] [2021-08-21 12:38:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:39,662 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:39,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:39,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973626592] [2021-08-21 12:38:39,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973626592] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:39,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:39,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:39,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475005785] [2021-08-21 12:38:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:39,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:39,898 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) [2021-08-21 12:38:42,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:42,665 INFO L93 Difference]: Finished difference Result 12913 states and 45328 transitions. [2021-08-21 12:38:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-21 12:38:42,665 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 [2021-08-21 12:38:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:42,694 INFO L225 Difference]: With dead ends: 12913 [2021-08-21 12:38:42,694 INFO L226 Difference]: Without dead ends: 12804 [2021-08-21 12:38:42,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2973 ImplicationChecksByTransitivity, 1654.9ms TimeCoverageRelationStatistics Valid=802, Invalid=8318, Unknown=0, NotChecked=0, Total=9120 [2021-08-21 12:38:42,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12804 states. [2021-08-21 12:38:42,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12804 to 8465. [2021-08-21 12:38:42,833 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) [2021-08-21 12:38:42,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2021-08-21 12:38:42,853 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2021-08-21 12:38:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:42,853 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2021-08-21 12:38:42,853 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) [2021-08-21 12:38:42,853 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2021-08-21 12:38:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:42,866 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:42,866 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:42,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2021-08-21 12:38:42,867 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:42,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1685161473, now seen corresponding path program 201 times [2021-08-21 12:38:42,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:42,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135987362] [2021-08-21 12:38:42,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:42,867 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:43,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:43,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:43,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135987362] [2021-08-21 12:38:43,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135987362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:43,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:43,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:43,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702887700] [2021-08-21 12:38:43,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:43,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:43,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:43,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:43,104 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) [2021-08-21 12:38:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:46,351 INFO L93 Difference]: Finished difference Result 11858 states and 41518 transitions. [2021-08-21 12:38:46,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-08-21 12:38:46,351 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 [2021-08-21 12:38:46,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:46,379 INFO L225 Difference]: With dead ends: 11858 [2021-08-21 12:38:46,379 INFO L226 Difference]: Without dead ends: 11737 [2021-08-21 12:38:46,380 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 1832.5ms TimeCoverageRelationStatistics Valid=575, Invalid=5905, Unknown=0, NotChecked=0, Total=6480 [2021-08-21 12:38:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11737 states. [2021-08-21 12:38:46,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11737 to 8465. [2021-08-21 12:38:46,526 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) [2021-08-21 12:38:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8465 states to 8465 states and 29949 transitions. [2021-08-21 12:38:46,547 INFO L78 Accepts]: Start accepts. Automaton has 8465 states and 29949 transitions. Word has length 47 [2021-08-21 12:38:46,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:46,547 INFO L470 AbstractCegarLoop]: Abstraction has 8465 states and 29949 transitions. [2021-08-21 12:38:46,547 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) [2021-08-21 12:38:46,547 INFO L276 IsEmpty]: Start isEmpty. Operand 8465 states and 29949 transitions. [2021-08-21 12:38:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:46,561 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:46,561 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:46,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2021-08-21 12:38:46,562 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:46,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:46,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1038384387, now seen corresponding path program 202 times [2021-08-21 12:38:46,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:46,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534795086] [2021-08-21 12:38:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:46,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:46,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:46,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534795086] [2021-08-21 12:38:46,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534795086] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:46,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:46,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:46,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242709589] [2021-08-21 12:38:46,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:46,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:46,917 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) [2021-08-21 12:38:53,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:53,040 INFO L93 Difference]: Finished difference Result 16389 states and 57802 transitions. [2021-08-21 12:38:53,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-08-21 12:38:53,040 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 [2021-08-21 12:38:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:53,078 INFO L225 Difference]: With dead ends: 16389 [2021-08-21 12:38:53,078 INFO L226 Difference]: Without dead ends: 16064 [2021-08-21 12:38:53,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6699 ImplicationChecksByTransitivity, 3621.6ms TimeCoverageRelationStatistics Valid=1229, Invalid=16861, Unknown=0, NotChecked=0, Total=18090 [2021-08-21 12:38:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16064 states. [2021-08-21 12:38:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16064 to 8454. [2021-08-21 12:38:53,247 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) [2021-08-21 12:38:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8454 states to 8454 states and 29902 transitions. [2021-08-21 12:38:53,267 INFO L78 Accepts]: Start accepts. Automaton has 8454 states and 29902 transitions. Word has length 47 [2021-08-21 12:38:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:53,267 INFO L470 AbstractCegarLoop]: Abstraction has 8454 states and 29902 transitions. [2021-08-21 12:38:53,267 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) [2021-08-21 12:38:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8454 states and 29902 transitions. [2021-08-21 12:38:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:53,281 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:53,281 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:53,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2021-08-21 12:38:53,281 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:53,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:53,281 INFO L82 PathProgramCache]: Analyzing trace with hash -739492709, now seen corresponding path program 203 times [2021-08-21 12:38:53,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:53,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562604611] [2021-08-21 12:38:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:53,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:53,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:53,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:53,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562604611] [2021-08-21 12:38:53,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562604611] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:53,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:53,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:53,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230414075] [2021-08-21 12:38:53,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:53,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:53,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:53,609 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) [2021-08-21 12:38:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:38:56,418 INFO L93 Difference]: Finished difference Result 11514 states and 40231 transitions. [2021-08-21 12:38:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-08-21 12:38:56,419 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 [2021-08-21 12:38:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:38:56,445 INFO L225 Difference]: With dead ends: 11514 [2021-08-21 12:38:56,445 INFO L226 Difference]: Without dead ends: 11417 [2021-08-21 12:38:56,446 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1273 ImplicationChecksByTransitivity, 1615.1ms TimeCoverageRelationStatistics Valid=437, Invalid=4255, Unknown=0, NotChecked=0, Total=4692 [2021-08-21 12:38:56,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11417 states. [2021-08-21 12:38:56,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11417 to 8462. [2021-08-21 12:38:56,588 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) [2021-08-21 12:38:56,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8462 states to 8462 states and 29920 transitions. [2021-08-21 12:38:56,607 INFO L78 Accepts]: Start accepts. Automaton has 8462 states and 29920 transitions. Word has length 47 [2021-08-21 12:38:56,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:38:56,608 INFO L470 AbstractCegarLoop]: Abstraction has 8462 states and 29920 transitions. [2021-08-21 12:38:56,608 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) [2021-08-21 12:38:56,608 INFO L276 IsEmpty]: Start isEmpty. Operand 8462 states and 29920 transitions. [2021-08-21 12:38:56,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:38:56,621 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:38:56,622 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:38:56,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2021-08-21 12:38:56,622 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:38:56,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:38:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1830054077, now seen corresponding path program 204 times [2021-08-21 12:38:56,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:38:56,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278934053] [2021-08-21 12:38:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:38:56,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:38:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:38:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:38:56,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:38:56,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278934053] [2021-08-21 12:38:56,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278934053] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:38:56,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:38:56,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:38:56,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820403217] [2021-08-21 12:38:56,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:38:56,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:38:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:38:56,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:38:56,948 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) [2021-08-21 12:39:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:02,872 INFO L93 Difference]: Finished difference Result 15670 states and 54941 transitions. [2021-08-21 12:39:02,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 136 states. [2021-08-21 12:39:02,872 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 [2021-08-21 12:39:02,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:02,908 INFO L225 Difference]: With dead ends: 15670 [2021-08-21 12:39:02,908 INFO L226 Difference]: Without dead ends: 15446 [2021-08-21 12:39:02,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6875 ImplicationChecksByTransitivity, 3773.5ms TimeCoverageRelationStatistics Valid=1434, Invalid=17198, Unknown=0, NotChecked=0, Total=18632 [2021-08-21 12:39:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15446 states. [2021-08-21 12:39:03,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15446 to 8467. [2021-08-21 12:39:03,080 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) [2021-08-21 12:39:03,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8467 states to 8467 states and 29959 transitions. [2021-08-21 12:39:03,100 INFO L78 Accepts]: Start accepts. Automaton has 8467 states and 29959 transitions. Word has length 47 [2021-08-21 12:39:03,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:03,100 INFO L470 AbstractCegarLoop]: Abstraction has 8467 states and 29959 transitions. [2021-08-21 12:39:03,101 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) [2021-08-21 12:39:03,101 INFO L276 IsEmpty]: Start isEmpty. Operand 8467 states and 29959 transitions. [2021-08-21 12:39:03,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:03,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:03,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:03,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2021-08-21 12:39:03,115 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:03,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:03,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1211220069, now seen corresponding path program 205 times [2021-08-21 12:39:03,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:03,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880268496] [2021-08-21 12:39:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:03,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:03,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:03,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880268496] [2021-08-21 12:39:03,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880268496] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:03,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:03,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:03,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549619359] [2021-08-21 12:39:03,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:03,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:03,405 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) [2021-08-21 12:39:06,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:06,487 INFO L93 Difference]: Finished difference Result 12382 states and 43733 transitions. [2021-08-21 12:39:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-08-21 12:39:06,487 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 [2021-08-21 12:39:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:06,516 INFO L225 Difference]: With dead ends: 12382 [2021-08-21 12:39:06,516 INFO L226 Difference]: Without dead ends: 12282 [2021-08-21 12:39:06,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 1685.9ms TimeCoverageRelationStatistics Valid=472, Invalid=4784, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 12:39:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12282 states. [2021-08-21 12:39:06,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12282 to 8476. [2021-08-21 12:39:06,751 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) [2021-08-21 12:39:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29981 transitions. [2021-08-21 12:39:06,777 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29981 transitions. Word has length 47 [2021-08-21 12:39:06,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:06,777 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29981 transitions. [2021-08-21 12:39:06,777 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) [2021-08-21 12:39:06,777 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29981 transitions. [2021-08-21 12:39:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:06,794 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:06,794 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:06,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2021-08-21 12:39:06,794 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:06,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:06,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1648679737, now seen corresponding path program 206 times [2021-08-21 12:39:06,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:06,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956001884] [2021-08-21 12:39:06,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:06,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:07,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:07,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956001884] [2021-08-21 12:39:07,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956001884] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:07,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:07,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:07,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340792013] [2021-08-21 12:39:07,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:07,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:07,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:07,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:07,098 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) [2021-08-21 12:39:09,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:09,518 INFO L93 Difference]: Finished difference Result 12162 states and 42429 transitions. [2021-08-21 12:39:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-08-21 12:39:09,519 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 [2021-08-21 12:39:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:09,545 INFO L225 Difference]: With dead ends: 12162 [2021-08-21 12:39:09,545 INFO L226 Difference]: Without dead ends: 12044 [2021-08-21 12:39:09,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 1352.9ms TimeCoverageRelationStatistics Valid=562, Invalid=5444, Unknown=0, NotChecked=0, Total=6006 [2021-08-21 12:39:09,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12044 states. [2021-08-21 12:39:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12044 to 8476. [2021-08-21 12:39:09,688 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) [2021-08-21 12:39:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29975 transitions. [2021-08-21 12:39:09,709 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29975 transitions. Word has length 47 [2021-08-21 12:39:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:09,709 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29975 transitions. [2021-08-21 12:39:09,709 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) [2021-08-21 12:39:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29975 transitions. [2021-08-21 12:39:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:09,724 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:09,724 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:09,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2021-08-21 12:39:09,724 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:09,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:09,724 INFO L82 PathProgramCache]: Analyzing trace with hash -159438731, now seen corresponding path program 207 times [2021-08-21 12:39:09,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:09,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819360204] [2021-08-21 12:39:09,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:09,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:09,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:09,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819360204] [2021-08-21 12:39:09,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819360204] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:09,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:09,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:09,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032230382] [2021-08-21 12:39:09,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:09,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:09,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:09,981 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) [2021-08-21 12:39:11,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:11,870 INFO L93 Difference]: Finished difference Result 11549 states and 40496 transitions. [2021-08-21 12:39:11,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-08-21 12:39:11,870 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 [2021-08-21 12:39:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:11,895 INFO L225 Difference]: With dead ends: 11549 [2021-08-21 12:39:11,895 INFO L226 Difference]: Without dead ends: 11452 [2021-08-21 12:39:11,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 1010.0ms TimeCoverageRelationStatistics Valid=412, Invalid=4144, Unknown=0, NotChecked=0, Total=4556 [2021-08-21 12:39:11,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11452 states. [2021-08-21 12:39:12,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11452 to 8482. [2021-08-21 12:39:12,027 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) [2021-08-21 12:39:12,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 29990 transitions. [2021-08-21 12:39:12,047 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 29990 transitions. Word has length 47 [2021-08-21 12:39:12,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:12,047 INFO L470 AbstractCegarLoop]: Abstraction has 8482 states and 29990 transitions. [2021-08-21 12:39:12,047 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) [2021-08-21 12:39:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 29990 transitions. [2021-08-21 12:39:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:12,061 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:12,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:12,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2021-08-21 12:39:12,061 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:12,061 INFO L82 PathProgramCache]: Analyzing trace with hash -156764905, now seen corresponding path program 208 times [2021-08-21 12:39:12,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:12,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320438152] [2021-08-21 12:39:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:12,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:12,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:12,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:12,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320438152] [2021-08-21 12:39:12,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320438152] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:12,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:12,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:12,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411038156] [2021-08-21 12:39:12,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:12,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:12,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:12,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:12,311 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) [2021-08-21 12:39:14,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:14,774 INFO L93 Difference]: Finished difference Result 12691 states and 44663 transitions. [2021-08-21 12:39:14,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-21 12:39:14,774 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 [2021-08-21 12:39:14,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:14,803 INFO L225 Difference]: With dead ends: 12691 [2021-08-21 12:39:14,803 INFO L226 Difference]: Without dead ends: 12582 [2021-08-21 12:39:14,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1355.4ms TimeCoverageRelationStatistics Valid=624, Invalid=6182, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 12:39:14,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12582 states. [2021-08-21 12:39:14,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12582 to 8464. [2021-08-21 12:39:14,948 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) [2021-08-21 12:39:14,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-08-21 12:39:14,968 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-08-21 12:39:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:14,968 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-08-21 12:39:14,968 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) [2021-08-21 12:39:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-08-21 12:39:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:14,982 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:14,982 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:14,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2021-08-21 12:39:14,983 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:14,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1413928267, now seen corresponding path program 209 times [2021-08-21 12:39:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:14,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78970524] [2021-08-21 12:39:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:14,983 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:15,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:15,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78970524] [2021-08-21 12:39:15,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78970524] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:15,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:15,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:39:15,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795353923] [2021-08-21 12:39:15,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:39:15,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:39:15,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:39:15,231 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) [2021-08-21 12:39:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:18,274 INFO L93 Difference]: Finished difference Result 13706 states and 48281 transitions. [2021-08-21 12:39:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-08-21 12:39:18,274 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 [2021-08-21 12:39:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:18,305 INFO L225 Difference]: With dead ends: 13706 [2021-08-21 12:39:18,305 INFO L226 Difference]: Without dead ends: 13606 [2021-08-21 12:39:18,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2804 ImplicationChecksByTransitivity, 1824.7ms TimeCoverageRelationStatistics Valid=787, Invalid=7769, Unknown=0, NotChecked=0, Total=8556 [2021-08-21 12:39:18,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13606 states. [2021-08-21 12:39:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13606 to 8464. [2021-08-21 12:39:18,455 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) [2021-08-21 12:39:18,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-08-21 12:39:18,477 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-08-21 12:39:18,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:18,477 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-08-21 12:39:18,477 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) [2021-08-21 12:39:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-08-21 12:39:18,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:18,491 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:18,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:18,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2021-08-21 12:39:18,492 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash 961200919, now seen corresponding path program 210 times [2021-08-21 12:39:18,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:18,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946230642] [2021-08-21 12:39:18,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:18,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:18,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:18,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946230642] [2021-08-21 12:39:18,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946230642] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:18,759 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:18,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:39:18,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154549851] [2021-08-21 12:39:18,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:39:18,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:18,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:39:18,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:39:18,759 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) [2021-08-21 12:39:22,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:22,648 INFO L93 Difference]: Finished difference Result 13713 states and 48385 transitions. [2021-08-21 12:39:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-08-21 12:39:22,649 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 [2021-08-21 12:39:22,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:22,680 INFO L225 Difference]: With dead ends: 13713 [2021-08-21 12:39:22,680 INFO L226 Difference]: Without dead ends: 13607 [2021-08-21 12:39:22,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3398 ImplicationChecksByTransitivity, 2398.9ms TimeCoverageRelationStatistics Valid=914, Invalid=9186, Unknown=0, NotChecked=0, Total=10100 [2021-08-21 12:39:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13607 states. [2021-08-21 12:39:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13607 to 8464. [2021-08-21 12:39:22,832 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) [2021-08-21 12:39:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 29939 transitions. [2021-08-21 12:39:22,988 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 29939 transitions. Word has length 47 [2021-08-21 12:39:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:22,988 INFO L470 AbstractCegarLoop]: Abstraction has 8464 states and 29939 transitions. [2021-08-21 12:39:22,988 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) [2021-08-21 12:39:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 29939 transitions. [2021-08-21 12:39:23,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:23,002 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:23,002 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:23,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2021-08-21 12:39:23,002 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1155618519, now seen corresponding path program 211 times [2021-08-21 12:39:23,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:23,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439445069] [2021-08-21 12:39:23,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:23,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:23,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:23,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:23,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:23,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439445069] [2021-08-21 12:39:23,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439445069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:23,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:23,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:23,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896110799] [2021-08-21 12:39:23,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:23,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:23,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:23,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:23,326 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) [2021-08-21 12:39:28,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:28,368 INFO L93 Difference]: Finished difference Result 14165 states and 50052 transitions. [2021-08-21 12:39:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-08-21 12:39:28,369 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 [2021-08-21 12:39:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:28,404 INFO L225 Difference]: With dead ends: 14165 [2021-08-21 12:39:28,404 INFO L226 Difference]: Without dead ends: 14065 [2021-08-21 12:39:28,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2989.3ms TimeCoverageRelationStatistics Valid=863, Invalid=9037, Unknown=0, NotChecked=0, Total=9900 [2021-08-21 12:39:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14065 states. [2021-08-21 12:39:28,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14065 to 8470. [2021-08-21 12:39:28,564 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) [2021-08-21 12:39:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29960 transitions. [2021-08-21 12:39:28,585 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29960 transitions. Word has length 47 [2021-08-21 12:39:28,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:28,585 INFO L470 AbstractCegarLoop]: Abstraction has 8470 states and 29960 transitions. [2021-08-21 12:39:28,585 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) [2021-08-21 12:39:28,585 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29960 transitions. [2021-08-21 12:39:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:28,600 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:28,600 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:28,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2021-08-21 12:39:28,600 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:28,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:28,600 INFO L82 PathProgramCache]: Analyzing trace with hash 612735575, now seen corresponding path program 212 times [2021-08-21 12:39:28,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:28,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100225992] [2021-08-21 12:39:28,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:28,601 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:28,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:28,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100225992] [2021-08-21 12:39:28,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100225992] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:28,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:28,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:28,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572535708] [2021-08-21 12:39:28,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:28,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:28,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:28,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:28,932 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) [2021-08-21 12:39:32,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:32,616 INFO L93 Difference]: Finished difference Result 13188 states and 46503 transitions. [2021-08-21 12:39:32,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-08-21 12:39:32,617 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 [2021-08-21 12:39:32,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:32,645 INFO L225 Difference]: With dead ends: 13188 [2021-08-21 12:39:32,646 INFO L226 Difference]: Without dead ends: 13088 [2021-08-21 12:39:32,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 2107.8ms TimeCoverageRelationStatistics Valid=693, Invalid=6963, Unknown=0, NotChecked=0, Total=7656 [2021-08-21 12:39:32,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13088 states. [2021-08-21 12:39:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13088 to 8470. [2021-08-21 12:39:32,778 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) [2021-08-21 12:39:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8470 states to 8470 states and 29957 transitions. [2021-08-21 12:39:32,798 INFO L78 Accepts]: Start accepts. Automaton has 8470 states and 29957 transitions. Word has length 47 [2021-08-21 12:39:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:32,798 INFO L470 AbstractCegarLoop]: Abstraction has 8470 states and 29957 transitions. [2021-08-21 12:39:32,798 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) [2021-08-21 12:39:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 8470 states and 29957 transitions. [2021-08-21 12:39:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:32,812 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:32,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:32,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2021-08-21 12:39:32,812 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:32,812 INFO L82 PathProgramCache]: Analyzing trace with hash 895138361, now seen corresponding path program 213 times [2021-08-21 12:39:32,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:32,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716390547] [2021-08-21 12:39:32,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:32,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:33,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:33,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716390547] [2021-08-21 12:39:33,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716390547] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:33,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:33,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:33,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496137938] [2021-08-21 12:39:33,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:33,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:33,038 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) [2021-08-21 12:39:37,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:37,558 INFO L93 Difference]: Finished difference Result 13839 states and 48810 transitions. [2021-08-21 12:39:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-08-21 12:39:37,558 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 [2021-08-21 12:39:37,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:37,591 INFO L225 Difference]: With dead ends: 13839 [2021-08-21 12:39:37,591 INFO L226 Difference]: Without dead ends: 13742 [2021-08-21 12:39:37,592 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3834 ImplicationChecksByTransitivity, 2696.2ms TimeCoverageRelationStatistics Valid=985, Invalid=10357, Unknown=0, NotChecked=0, Total=11342 [2021-08-21 12:39:37,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13742 states. [2021-08-21 12:39:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13742 to 8476. [2021-08-21 12:39:37,745 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) [2021-08-21 12:39:37,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 29972 transitions. [2021-08-21 12:39:37,765 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 29972 transitions. Word has length 47 [2021-08-21 12:39:37,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:37,765 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 29972 transitions. [2021-08-21 12:39:37,765 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) [2021-08-21 12:39:37,766 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 29972 transitions. [2021-08-21 12:39:37,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:37,779 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:37,779 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:37,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2021-08-21 12:39:37,779 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:37,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:37,780 INFO L82 PathProgramCache]: Analyzing trace with hash 978026967, now seen corresponding path program 214 times [2021-08-21 12:39:37,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:37,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034028460] [2021-08-21 12:39:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:37,780 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:38,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:38,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:38,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034028460] [2021-08-21 12:39:38,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034028460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:38,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:38,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:38,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876912716] [2021-08-21 12:39:38,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:38,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:38,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:38,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:38,166 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) [2021-08-21 12:39:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:42,122 INFO L93 Difference]: Finished difference Result 13196 states and 46675 transitions. [2021-08-21 12:39:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-08-21 12:39:42,122 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 [2021-08-21 12:39:42,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:42,152 INFO L225 Difference]: With dead ends: 13196 [2021-08-21 12:39:42,152 INFO L226 Difference]: Without dead ends: 13090 [2021-08-21 12:39:42,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2638 ImplicationChecksByTransitivity, 2216.9ms TimeCoverageRelationStatistics Valid=778, Invalid=7594, Unknown=0, NotChecked=0, Total=8372 [2021-08-21 12:39:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2021-08-21 12:39:42,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 8461. [2021-08-21 12:39:42,291 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) [2021-08-21 12:39:42,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8461 states to 8461 states and 29937 transitions. [2021-08-21 12:39:42,311 INFO L78 Accepts]: Start accepts. Automaton has 8461 states and 29937 transitions. Word has length 47 [2021-08-21 12:39:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:42,311 INFO L470 AbstractCegarLoop]: Abstraction has 8461 states and 29937 transitions. [2021-08-21 12:39:42,311 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) [2021-08-21 12:39:42,311 INFO L276 IsEmpty]: Start isEmpty. Operand 8461 states and 29937 transitions. [2021-08-21 12:39:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:42,324 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:42,324 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:42,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2021-08-21 12:39:42,324 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:42,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:42,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1916708353, now seen corresponding path program 215 times [2021-08-21 12:39:42,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:42,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342213792] [2021-08-21 12:39:42,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:42,325 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:42,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:42,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:42,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342213792] [2021-08-21 12:39:42,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342213792] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:42,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:42,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:42,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32845550] [2021-08-21 12:39:42,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:42,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:42,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:42,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:42,615 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) [2021-08-21 12:39:49,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:49,148 INFO L93 Difference]: Finished difference Result 18918 states and 66580 transitions. [2021-08-21 12:39:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2021-08-21 12:39:49,148 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 [2021-08-21 12:39:49,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:49,193 INFO L225 Difference]: With dead ends: 18918 [2021-08-21 12:39:49,193 INFO L226 Difference]: Without dead ends: 18520 [2021-08-21 12:39:49,194 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8267 ImplicationChecksByTransitivity, 3967.6ms TimeCoverageRelationStatistics Valid=1605, Invalid=20151, Unknown=0, NotChecked=0, Total=21756 [2021-08-21 12:39:49,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18520 states. [2021-08-21 12:39:49,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18520 to 8861. [2021-08-21 12:39:49,391 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) [2021-08-21 12:39:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8861 states to 8861 states and 31456 transitions. [2021-08-21 12:39:49,413 INFO L78 Accepts]: Start accepts. Automaton has 8861 states and 31456 transitions. Word has length 47 [2021-08-21 12:39:49,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:49,413 INFO L470 AbstractCegarLoop]: Abstraction has 8861 states and 31456 transitions. [2021-08-21 12:39:49,413 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) [2021-08-21 12:39:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8861 states and 31456 transitions. [2021-08-21 12:39:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:49,429 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:49,429 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:49,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2021-08-21 12:39:49,429 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash -195913121, now seen corresponding path program 216 times [2021-08-21 12:39:49,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:49,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852324399] [2021-08-21 12:39:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:49,429 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:49,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:49,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852324399] [2021-08-21 12:39:49,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852324399] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:49,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:49,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:49,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045472038] [2021-08-21 12:39:49,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:49,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:49,840 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) [2021-08-21 12:39:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:39:56,479 INFO L93 Difference]: Finished difference Result 19219 states and 67529 transitions. [2021-08-21 12:39:56,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-08-21 12:39:56,479 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 [2021-08-21 12:39:56,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:39:56,527 INFO L225 Difference]: With dead ends: 19219 [2021-08-21 12:39:56,527 INFO L226 Difference]: Without dead ends: 18578 [2021-08-21 12:39:56,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10252 ImplicationChecksByTransitivity, 4292.3ms TimeCoverageRelationStatistics Valid=1892, Invalid=24514, Unknown=0, NotChecked=0, Total=26406 [2021-08-21 12:39:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18578 states. [2021-08-21 12:39:56,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18578 to 9098. [2021-08-21 12:39:56,711 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) [2021-08-21 12:39:56,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 32325 transitions. [2021-08-21 12:39:56,732 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 32325 transitions. Word has length 47 [2021-08-21 12:39:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:39:56,732 INFO L470 AbstractCegarLoop]: Abstraction has 9098 states and 32325 transitions. [2021-08-21 12:39:56,732 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) [2021-08-21 12:39:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 32325 transitions. [2021-08-21 12:39:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:39:56,747 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:39:56,747 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:39:56,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2021-08-21 12:39:56,747 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:39:56,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:39:56,747 INFO L82 PathProgramCache]: Analyzing trace with hash 2082893471, now seen corresponding path program 217 times [2021-08-21 12:39:56,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:39:56,748 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69438047] [2021-08-21 12:39:56,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:39:56,748 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:39:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:39:57,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:39:57,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:39:57,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69438047] [2021-08-21 12:39:57,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69438047] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:39:57,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:39:57,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:39:57,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063899856] [2021-08-21 12:39:57,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:39:57,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:39:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:39:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:39:57,129 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) [2021-08-21 12:40:04,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:04,319 INFO L93 Difference]: Finished difference Result 21701 states and 76586 transitions. [2021-08-21 12:40:04,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2021-08-21 12:40:04,319 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 [2021-08-21 12:40:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:04,384 INFO L225 Difference]: With dead ends: 21701 [2021-08-21 12:40:04,384 INFO L226 Difference]: Without dead ends: 21223 [2021-08-21 12:40:04,386 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9037 ImplicationChecksByTransitivity, 4619.5ms TimeCoverageRelationStatistics Valid=1648, Invalid=21914, Unknown=0, NotChecked=0, Total=23562 [2021-08-21 12:40:04,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21223 states. [2021-08-21 12:40:04,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21223 to 9359. [2021-08-21 12:40:04,673 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) [2021-08-21 12:40:04,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9359 states to 9359 states and 33273 transitions. [2021-08-21 12:40:04,705 INFO L78 Accepts]: Start accepts. Automaton has 9359 states and 33273 transitions. Word has length 47 [2021-08-21 12:40:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:04,706 INFO L470 AbstractCegarLoop]: Abstraction has 9359 states and 33273 transitions. [2021-08-21 12:40:04,706 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) [2021-08-21 12:40:04,706 INFO L276 IsEmpty]: Start isEmpty. Operand 9359 states and 33273 transitions. [2021-08-21 12:40:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:04,723 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:04,723 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:04,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2021-08-21 12:40:04,723 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -959811685, now seen corresponding path program 218 times [2021-08-21 12:40:04,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:04,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724452817] [2021-08-21 12:40:04,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:04,723 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:05,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:05,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724452817] [2021-08-21 12:40:05,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724452817] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:05,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:05,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:05,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895668404] [2021-08-21 12:40:05,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:05,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:05,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:05,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:05,016 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) [2021-08-21 12:40:09,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:09,434 INFO L93 Difference]: Finished difference Result 19224 states and 68517 transitions. [2021-08-21 12:40:09,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-08-21 12:40:09,434 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 [2021-08-21 12:40:09,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:09,482 INFO L225 Difference]: With dead ends: 19224 [2021-08-21 12:40:09,482 INFO L226 Difference]: Without dead ends: 19124 [2021-08-21 12:40:09,484 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4973 ImplicationChecksByTransitivity, 2544.6ms TimeCoverageRelationStatistics Valid=1059, Invalid=12983, Unknown=0, NotChecked=0, Total=14042 [2021-08-21 12:40:09,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19124 states. [2021-08-21 12:40:09,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19124 to 9553. [2021-08-21 12:40:09,717 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) [2021-08-21 12:40:09,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9553 states to 9553 states and 33989 transitions. [2021-08-21 12:40:09,742 INFO L78 Accepts]: Start accepts. Automaton has 9553 states and 33989 transitions. Word has length 47 [2021-08-21 12:40:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:09,742 INFO L470 AbstractCegarLoop]: Abstraction has 9553 states and 33989 transitions. [2021-08-21 12:40:09,742 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) [2021-08-21 12:40:09,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9553 states and 33989 transitions. [2021-08-21 12:40:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:09,758 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:09,759 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:09,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2021-08-21 12:40:09,759 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:09,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1025874243, now seen corresponding path program 219 times [2021-08-21 12:40:09,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:09,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25832494] [2021-08-21 12:40:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:09,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:10,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:10,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25832494] [2021-08-21 12:40:10,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25832494] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:10,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:10,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:10,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575315369] [2021-08-21 12:40:10,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:10,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:10,120 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) [2021-08-21 12:40:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:17,634 INFO L93 Difference]: Finished difference Result 22955 states and 81467 transitions. [2021-08-21 12:40:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-08-21 12:40:17,635 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 [2021-08-21 12:40:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:17,693 INFO L225 Difference]: With dead ends: 22955 [2021-08-21 12:40:17,693 INFO L226 Difference]: Without dead ends: 22705 [2021-08-21 12:40:17,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9440 ImplicationChecksByTransitivity, 4445.3ms TimeCoverageRelationStatistics Valid=1670, Invalid=22822, Unknown=0, NotChecked=0, Total=24492 [2021-08-21 12:40:17,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22705 states. [2021-08-21 12:40:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22705 to 9570. [2021-08-21 12:40:17,951 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) [2021-08-21 12:40:17,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9570 states to 9570 states and 34056 transitions. [2021-08-21 12:40:17,981 INFO L78 Accepts]: Start accepts. Automaton has 9570 states and 34056 transitions. Word has length 47 [2021-08-21 12:40:17,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:17,981 INFO L470 AbstractCegarLoop]: Abstraction has 9570 states and 34056 transitions. [2021-08-21 12:40:17,981 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) [2021-08-21 12:40:17,981 INFO L276 IsEmpty]: Start isEmpty. Operand 9570 states and 34056 transitions. [2021-08-21 12:40:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:17,999 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:17,999 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:17,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2021-08-21 12:40:17,999 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:17,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:17,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1170556931, now seen corresponding path program 220 times [2021-08-21 12:40:17,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:17,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080066981] [2021-08-21 12:40:18,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:18,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:18,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:18,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:18,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080066981] [2021-08-21 12:40:18,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080066981] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:18,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:18,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:18,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312630337] [2021-08-21 12:40:18,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:18,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:18,302 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) [2021-08-21 12:40:25,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:25,929 INFO L93 Difference]: Finished difference Result 20403 states and 72081 transitions. [2021-08-21 12:40:25,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2021-08-21 12:40:25,930 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 [2021-08-21 12:40:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:25,979 INFO L225 Difference]: With dead ends: 20403 [2021-08-21 12:40:25,979 INFO L226 Difference]: Without dead ends: 20020 [2021-08-21 12:40:25,980 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11540 ImplicationChecksByTransitivity, 4884.9ms TimeCoverageRelationStatistics Valid=1955, Invalid=27457, Unknown=0, NotChecked=0, Total=29412 [2021-08-21 12:40:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20020 states. [2021-08-21 12:40:26,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20020 to 9545. [2021-08-21 12:40:26,205 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) [2021-08-21 12:40:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9545 states to 9545 states and 33963 transitions. [2021-08-21 12:40:26,228 INFO L78 Accepts]: Start accepts. Automaton has 9545 states and 33963 transitions. Word has length 47 [2021-08-21 12:40:26,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:26,228 INFO L470 AbstractCegarLoop]: Abstraction has 9545 states and 33963 transitions. [2021-08-21 12:40:26,229 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) [2021-08-21 12:40:26,229 INFO L276 IsEmpty]: Start isEmpty. Operand 9545 states and 33963 transitions. [2021-08-21 12:40:26,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:26,244 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:26,244 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:26,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2021-08-21 12:40:26,245 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:26,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:26,245 INFO L82 PathProgramCache]: Analyzing trace with hash 861406363, now seen corresponding path program 221 times [2021-08-21 12:40:26,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:26,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879681192] [2021-08-21 12:40:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:26,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:26,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:26,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879681192] [2021-08-21 12:40:26,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879681192] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:26,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:26,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:26,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127836515] [2021-08-21 12:40:26,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:26,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:26,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:26,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:26,579 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) [2021-08-21 12:40:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:32,510 INFO L93 Difference]: Finished difference Result 19152 states and 68026 transitions. [2021-08-21 12:40:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-08-21 12:40:32,510 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 [2021-08-21 12:40:32,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:32,558 INFO L225 Difference]: With dead ends: 19152 [2021-08-21 12:40:32,558 INFO L226 Difference]: Without dead ends: 19055 [2021-08-21 12:40:32,559 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5562 ImplicationChecksByTransitivity, 3513.7ms TimeCoverageRelationStatistics Valid=1117, Invalid=14383, Unknown=0, NotChecked=0, Total=15500 [2021-08-21 12:40:32,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19055 states. [2021-08-21 12:40:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19055 to 9571. [2021-08-21 12:40:32,776 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) [2021-08-21 12:40:32,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9571 states to 9571 states and 34044 transitions. [2021-08-21 12:40:32,798 INFO L78 Accepts]: Start accepts. Automaton has 9571 states and 34044 transitions. Word has length 47 [2021-08-21 12:40:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:32,798 INFO L470 AbstractCegarLoop]: Abstraction has 9571 states and 34044 transitions. [2021-08-21 12:40:32,798 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) [2021-08-21 12:40:32,798 INFO L276 IsEmpty]: Start isEmpty. Operand 9571 states and 34044 transitions. [2021-08-21 12:40:32,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:32,814 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:32,814 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:32,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2021-08-21 12:40:32,814 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:32,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:32,814 INFO L82 PathProgramCache]: Analyzing trace with hash -864014147, now seen corresponding path program 222 times [2021-08-21 12:40:32,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:32,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269220594] [2021-08-21 12:40:32,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:32,814 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:32,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:33,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:33,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269220594] [2021-08-21 12:40:33,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269220594] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:33,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:33,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:33,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458671584] [2021-08-21 12:40:33,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:33,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:33,137 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) [2021-08-21 12:40:41,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:41,098 INFO L93 Difference]: Finished difference Result 22580 states and 80326 transitions. [2021-08-21 12:40:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-08-21 12:40:41,098 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 [2021-08-21 12:40:41,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:41,156 INFO L225 Difference]: With dead ends: 22580 [2021-08-21 12:40:41,156 INFO L226 Difference]: Without dead ends: 22397 [2021-08-21 12:40:41,158 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11065 ImplicationChecksByTransitivity, 4832.9ms TimeCoverageRelationStatistics Valid=1920, Invalid=26472, Unknown=0, NotChecked=0, Total=28392 [2021-08-21 12:40:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22397 states. [2021-08-21 12:40:41,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22397 to 9738. [2021-08-21 12:40:41,511 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) [2021-08-21 12:40:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9738 states to 9738 states and 34674 transitions. [2021-08-21 12:40:41,535 INFO L78 Accepts]: Start accepts. Automaton has 9738 states and 34674 transitions. Word has length 47 [2021-08-21 12:40:41,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:41,535 INFO L470 AbstractCegarLoop]: Abstraction has 9738 states and 34674 transitions. [2021-08-21 12:40:41,535 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) [2021-08-21 12:40:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 9738 states and 34674 transitions. [2021-08-21 12:40:41,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:41,553 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:41,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:41,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2021-08-21 12:40:41,553 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:41,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:41,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1872368903, now seen corresponding path program 223 times [2021-08-21 12:40:41,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:41,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665875386] [2021-08-21 12:40:41,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:41,554 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:41,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:41,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:41,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665875386] [2021-08-21 12:40:41,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665875386] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:41,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:41,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:40:41,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166533018] [2021-08-21 12:40:41,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:40:41,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:40:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:40:41,903 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) [2021-08-21 12:40:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:46,265 INFO L93 Difference]: Finished difference Result 15750 states and 56134 transitions. [2021-08-21 12:40:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-08-21 12:40:46,266 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 [2021-08-21 12:40:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:46,304 INFO L225 Difference]: With dead ends: 15750 [2021-08-21 12:40:46,304 INFO L226 Difference]: Without dead ends: 15549 [2021-08-21 12:40:46,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 2598.3ms TimeCoverageRelationStatistics Valid=746, Invalid=7996, Unknown=0, NotChecked=0, Total=8742 [2021-08-21 12:40:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2021-08-21 12:40:46,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 10126. [2021-08-21 12:40:46,489 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) [2021-08-21 12:40:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10126 states to 10126 states and 36136 transitions. [2021-08-21 12:40:46,515 INFO L78 Accepts]: Start accepts. Automaton has 10126 states and 36136 transitions. Word has length 47 [2021-08-21 12:40:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:46,515 INFO L470 AbstractCegarLoop]: Abstraction has 10126 states and 36136 transitions. [2021-08-21 12:40:46,515 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) [2021-08-21 12:40:46,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10126 states and 36136 transitions. [2021-08-21 12:40:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:46,532 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:46,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:46,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2021-08-21 12:40:46,532 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:46,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:46,533 INFO L82 PathProgramCache]: Analyzing trace with hash -237775175, now seen corresponding path program 224 times [2021-08-21 12:40:46,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:46,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583115872] [2021-08-21 12:40:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:46,533 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:46,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:46,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583115872] [2021-08-21 12:40:46,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583115872] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:46,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:46,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:46,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304990745] [2021-08-21 12:40:46,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:46,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:46,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:46,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:46,899 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) [2021-08-21 12:40:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:52,224 INFO L93 Difference]: Finished difference Result 17140 states and 60885 transitions. [2021-08-21 12:40:52,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-08-21 12:40:52,224 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 [2021-08-21 12:40:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:52,266 INFO L225 Difference]: With dead ends: 17140 [2021-08-21 12:40:52,266 INFO L226 Difference]: Without dead ends: 16867 [2021-08-21 12:40:52,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4636 ImplicationChecksByTransitivity, 3079.6ms TimeCoverageRelationStatistics Valid=963, Invalid=12147, Unknown=0, NotChecked=0, Total=13110 [2021-08-21 12:40:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16867 states. [2021-08-21 12:40:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16867 to 10162. [2021-08-21 12:40:52,562 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) [2021-08-21 12:40:52,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2021-08-21 12:40:52,589 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2021-08-21 12:40:52,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:52,590 INFO L470 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2021-08-21 12:40:52,590 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) [2021-08-21 12:40:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2021-08-21 12:40:52,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:52,607 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:52,608 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:52,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2021-08-21 12:40:52,608 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:52,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:52,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1355842139, now seen corresponding path program 225 times [2021-08-21 12:40:52,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:52,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644793405] [2021-08-21 12:40:52,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:52,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:52,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:52,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:52,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:52,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644793405] [2021-08-21 12:40:52,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644793405] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:52,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:52,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:40:52,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64673883] [2021-08-21 12:40:52,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:40:52,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:52,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:40:52,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:40:52,888 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) [2021-08-21 12:40:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:40:56,966 INFO L93 Difference]: Finished difference Result 15565 states and 55467 transitions. [2021-08-21 12:40:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-08-21 12:40:56,966 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 [2021-08-21 12:40:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:40:57,001 INFO L225 Difference]: With dead ends: 15565 [2021-08-21 12:40:57,001 INFO L226 Difference]: Without dead ends: 15364 [2021-08-21 12:40:57,002 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3166 ImplicationChecksByTransitivity, 2356.6ms TimeCoverageRelationStatistics Valid=780, Invalid=8532, Unknown=0, NotChecked=0, Total=9312 [2021-08-21 12:40:57,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15364 states. [2021-08-21 12:40:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15364 to 10162. [2021-08-21 12:40:57,179 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) [2021-08-21 12:40:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10162 states to 10162 states and 36289 transitions. [2021-08-21 12:40:57,205 INFO L78 Accepts]: Start accepts. Automaton has 10162 states and 36289 transitions. Word has length 47 [2021-08-21 12:40:57,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:40:57,205 INFO L470 AbstractCegarLoop]: Abstraction has 10162 states and 36289 transitions. [2021-08-21 12:40:57,205 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) [2021-08-21 12:40:57,205 INFO L276 IsEmpty]: Start isEmpty. Operand 10162 states and 36289 transitions. [2021-08-21 12:40:57,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:40:57,223 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:40:57,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:40:57,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2021-08-21 12:40:57,223 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:40:57,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:40:57,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1570695495, now seen corresponding path program 226 times [2021-08-21 12:40:57,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:40:57,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333171000] [2021-08-21 12:40:57,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:40:57,223 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:40:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:40:57,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:40:57,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:40:57,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333171000] [2021-08-21 12:40:57,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333171000] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:40:57,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:40:57,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:40:57,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512390320] [2021-08-21 12:40:57,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:40:57,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:40:57,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:40:57,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:40:57,513 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) [2021-08-21 12:41:04,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:04,447 INFO L93 Difference]: Finished difference Result 19321 states and 68760 transitions. [2021-08-21 12:41:04,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-08-21 12:41:04,448 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 [2021-08-21 12:41:04,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:04,493 INFO L225 Difference]: With dead ends: 19321 [2021-08-21 12:41:04,493 INFO L226 Difference]: Without dead ends: 18685 [2021-08-21 12:41:04,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8416 ImplicationChecksByTransitivity, 4102.6ms TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2021-08-21 12:41:04,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18685 states. [2021-08-21 12:41:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18685 to 10501. [2021-08-21 12:41:04,712 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) [2021-08-21 12:41:04,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10501 states to 10501 states and 37495 transitions. [2021-08-21 12:41:04,738 INFO L78 Accepts]: Start accepts. Automaton has 10501 states and 37495 transitions. Word has length 47 [2021-08-21 12:41:04,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:04,738 INFO L470 AbstractCegarLoop]: Abstraction has 10501 states and 37495 transitions. [2021-08-21 12:41:04,738 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) [2021-08-21 12:41:04,739 INFO L276 IsEmpty]: Start isEmpty. Operand 10501 states and 37495 transitions. [2021-08-21 12:41:04,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:04,756 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:04,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:04,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2021-08-21 12:41:04,756 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:04,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:04,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1015597541, now seen corresponding path program 227 times [2021-08-21 12:41:04,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:04,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383885934] [2021-08-21 12:41:04,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:04,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:05,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:05,074 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383885934] [2021-08-21 12:41:05,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383885934] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:05,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:05,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:41:05,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442485010] [2021-08-21 12:41:05,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:41:05,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:05,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:41:05,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:41:05,075 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) [2021-08-21 12:41:09,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:09,966 INFO L93 Difference]: Finished difference Result 17680 states and 63164 transitions. [2021-08-21 12:41:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-08-21 12:41:09,966 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 [2021-08-21 12:41:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:10,009 INFO L225 Difference]: With dead ends: 17680 [2021-08-21 12:41:10,009 INFO L226 Difference]: Without dead ends: 17406 [2021-08-21 12:41:10,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4314 ImplicationChecksByTransitivity, 2847.7ms TimeCoverageRelationStatistics Valid=990, Invalid=11220, Unknown=0, NotChecked=0, Total=12210 [2021-08-21 12:41:10,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17406 states. [2021-08-21 12:41:10,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17406 to 10660. [2021-08-21 12:41:10,224 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) [2021-08-21 12:41:10,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 38058 transitions. [2021-08-21 12:41:10,251 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 38058 transitions. Word has length 47 [2021-08-21 12:41:10,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:10,251 INFO L470 AbstractCegarLoop]: Abstraction has 10660 states and 38058 transitions. [2021-08-21 12:41:10,251 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) [2021-08-21 12:41:10,251 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 38058 transitions. [2021-08-21 12:41:10,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:10,269 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:10,269 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:10,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2021-08-21 12:41:10,269 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:10,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:10,270 INFO L82 PathProgramCache]: Analyzing trace with hash 618996187, now seen corresponding path program 228 times [2021-08-21 12:41:10,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:10,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767913888] [2021-08-21 12:41:10,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:10,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:10,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:10,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767913888] [2021-08-21 12:41:10,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767913888] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:10,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:10,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:10,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95408253] [2021-08-21 12:41:10,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:10,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:10,603 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) [2021-08-21 12:41:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:16,185 INFO L93 Difference]: Finished difference Result 18986 states and 67756 transitions. [2021-08-21 12:41:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2021-08-21 12:41:16,185 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 [2021-08-21 12:41:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:16,230 INFO L225 Difference]: With dead ends: 18986 [2021-08-21 12:41:16,230 INFO L226 Difference]: Without dead ends: 18819 [2021-08-21 12:41:16,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6496 ImplicationChecksByTransitivity, 3110.0ms TimeCoverageRelationStatistics Valid=1214, Invalid=16342, Unknown=0, NotChecked=0, Total=17556 [2021-08-21 12:41:16,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18819 states. [2021-08-21 12:41:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18819 to 10806. [2021-08-21 12:41:16,441 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) [2021-08-21 12:41:16,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10806 states to 10806 states and 38620 transitions. [2021-08-21 12:41:16,467 INFO L78 Accepts]: Start accepts. Automaton has 10806 states and 38620 transitions. Word has length 47 [2021-08-21 12:41:16,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:16,467 INFO L470 AbstractCegarLoop]: Abstraction has 10806 states and 38620 transitions. [2021-08-21 12:41:16,468 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) [2021-08-21 12:41:16,468 INFO L276 IsEmpty]: Start isEmpty. Operand 10806 states and 38620 transitions. [2021-08-21 12:41:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:16,485 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:16,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:16,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2021-08-21 12:41:16,485 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:16,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:16,486 INFO L82 PathProgramCache]: Analyzing trace with hash -2074403843, now seen corresponding path program 229 times [2021-08-21 12:41:16,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:16,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583516523] [2021-08-21 12:41:16,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:16,486 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:16,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:16,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:16,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583516523] [2021-08-21 12:41:16,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583516523] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:16,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:16,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:16,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585865396] [2021-08-21 12:41:16,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:16,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:16,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:16,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:16,783 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) [2021-08-21 12:41:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:24,387 INFO L93 Difference]: Finished difference Result 21071 states and 75038 transitions. [2021-08-21 12:41:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-08-21 12:41:24,387 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 [2021-08-21 12:41:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:24,438 INFO L225 Difference]: With dead ends: 21071 [2021-08-21 12:41:24,439 INFO L226 Difference]: Without dead ends: 20812 [2021-08-21 12:41:24,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9197 ImplicationChecksByTransitivity, 4758.2ms TimeCoverageRelationStatistics Valid=1649, Invalid=22221, Unknown=0, NotChecked=0, Total=23870 [2021-08-21 12:41:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20812 states. [2021-08-21 12:41:24,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20812 to 10804. [2021-08-21 12:41:24,662 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) [2021-08-21 12:41:24,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10804 states to 10804 states and 38633 transitions. [2021-08-21 12:41:24,689 INFO L78 Accepts]: Start accepts. Automaton has 10804 states and 38633 transitions. Word has length 47 [2021-08-21 12:41:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:24,689 INFO L470 AbstractCegarLoop]: Abstraction has 10804 states and 38633 transitions. [2021-08-21 12:41:24,689 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) [2021-08-21 12:41:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 10804 states and 38633 transitions. [2021-08-21 12:41:24,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:24,708 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:24,708 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:24,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2021-08-21 12:41:24,708 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1056864505, now seen corresponding path program 230 times [2021-08-21 12:41:24,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:24,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64200837] [2021-08-21 12:41:24,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:24,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:25,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:25,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64200837] [2021-08-21 12:41:25,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64200837] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:25,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:25,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:25,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149197186] [2021-08-21 12:41:25,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:25,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:25,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:25,043 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) [2021-08-21 12:41:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:31,541 INFO L93 Difference]: Finished difference Result 23989 states and 85930 transitions. [2021-08-21 12:41:31,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-08-21 12:41:31,541 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 [2021-08-21 12:41:31,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:31,601 INFO L225 Difference]: With dead ends: 23989 [2021-08-21 12:41:31,602 INFO L226 Difference]: Without dead ends: 23360 [2021-08-21 12:41:31,602 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10181 ImplicationChecksByTransitivity, 4038.4ms TimeCoverageRelationStatistics Valid=1804, Invalid=24278, Unknown=0, NotChecked=0, Total=26082 [2021-08-21 12:41:31,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23360 states. [2021-08-21 12:41:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23360 to 11248. [2021-08-21 12:41:31,860 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) [2021-08-21 12:41:31,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11248 states to 11248 states and 40296 transitions. [2021-08-21 12:41:31,887 INFO L78 Accepts]: Start accepts. Automaton has 11248 states and 40296 transitions. Word has length 47 [2021-08-21 12:41:31,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:31,888 INFO L470 AbstractCegarLoop]: Abstraction has 11248 states and 40296 transitions. [2021-08-21 12:41:31,888 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) [2021-08-21 12:41:31,888 INFO L276 IsEmpty]: Start isEmpty. Operand 11248 states and 40296 transitions. [2021-08-21 12:41:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:31,907 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:31,907 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:31,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2021-08-21 12:41:31,907 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:31,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:31,907 INFO L82 PathProgramCache]: Analyzing trace with hash -396165737, now seen corresponding path program 231 times [2021-08-21 12:41:31,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:31,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582277855] [2021-08-21 12:41:31,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:31,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:32,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:32,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:32,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582277855] [2021-08-21 12:41:32,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582277855] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:32,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:32,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:32,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350149946] [2021-08-21 12:41:32,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:32,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:32,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:32,191 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) [2021-08-21 12:41:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:38,122 INFO L93 Difference]: Finished difference Result 19686 states and 70270 transitions. [2021-08-21 12:41:38,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-08-21 12:41:38,122 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 [2021-08-21 12:41:38,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:38,168 INFO L225 Difference]: With dead ends: 19686 [2021-08-21 12:41:38,169 INFO L226 Difference]: Without dead ends: 19212 [2021-08-21 12:41:38,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4707 ImplicationChecksByTransitivity, 3521.4ms TimeCoverageRelationStatistics Valid=1119, Invalid=12453, Unknown=0, NotChecked=0, Total=13572 [2021-08-21 12:41:38,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19212 states. [2021-08-21 12:41:38,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19212 to 11340. [2021-08-21 12:41:38,404 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) [2021-08-21 12:41:38,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11340 states to 11340 states and 40622 transitions. [2021-08-21 12:41:38,432 INFO L78 Accepts]: Start accepts. Automaton has 11340 states and 40622 transitions. Word has length 47 [2021-08-21 12:41:38,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:38,433 INFO L470 AbstractCegarLoop]: Abstraction has 11340 states and 40622 transitions. [2021-08-21 12:41:38,433 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) [2021-08-21 12:41:38,433 INFO L276 IsEmpty]: Start isEmpty. Operand 11340 states and 40622 transitions. [2021-08-21 12:41:38,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:38,452 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:38,452 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:38,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2021-08-21 12:41:38,452 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:38,452 INFO L82 PathProgramCache]: Analyzing trace with hash -462228295, now seen corresponding path program 232 times [2021-08-21 12:41:38,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:38,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448422640] [2021-08-21 12:41:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:38,453 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:38,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:38,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448422640] [2021-08-21 12:41:38,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448422640] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:38,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:38,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860732958] [2021-08-21 12:41:38,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:38,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:38,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:38,793 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) [2021-08-21 12:41:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:44,543 INFO L93 Difference]: Finished difference Result 20048 states and 71629 transitions. [2021-08-21 12:41:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-08-21 12:41:44,544 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 [2021-08-21 12:41:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:44,593 INFO L225 Difference]: With dead ends: 20048 [2021-08-21 12:41:44,593 INFO L226 Difference]: Without dead ends: 19715 [2021-08-21 12:41:44,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5753 ImplicationChecksByTransitivity, 3224.8ms TimeCoverageRelationStatistics Valid=1191, Invalid=14811, Unknown=0, NotChecked=0, Total=16002 [2021-08-21 12:41:44,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19715 states. [2021-08-21 12:41:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19715 to 11547. [2021-08-21 12:41:44,820 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) [2021-08-21 12:41:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11547 states to 11547 states and 41309 transitions. [2021-08-21 12:41:44,849 INFO L78 Accepts]: Start accepts. Automaton has 11547 states and 41309 transitions. Word has length 47 [2021-08-21 12:41:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:44,849 INFO L470 AbstractCegarLoop]: Abstraction has 11547 states and 41309 transitions. [2021-08-21 12:41:44,849 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) [2021-08-21 12:41:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11547 states and 41309 transitions. [2021-08-21 12:41:44,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:44,868 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:44,868 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:44,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2021-08-21 12:41:44,868 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:44,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:44,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1719882533, now seen corresponding path program 233 times [2021-08-21 12:41:44,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:44,869 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919965536] [2021-08-21 12:41:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:44,869 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:45,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:45,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919965536] [2021-08-21 12:41:45,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919965536] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:45,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:45,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:45,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363014780] [2021-08-21 12:41:45,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:45,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:45,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:45,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:45,206 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) [2021-08-21 12:41:53,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:41:53,398 INFO L93 Difference]: Finished difference Result 21886 states and 78200 transitions. [2021-08-21 12:41:53,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2021-08-21 12:41:53,398 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 [2021-08-21 12:41:53,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:41:53,451 INFO L225 Difference]: With dead ends: 21886 [2021-08-21 12:41:53,451 INFO L226 Difference]: Without dead ends: 21403 [2021-08-21 12:41:53,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10019 ImplicationChecksByTransitivity, 4910.4ms TimeCoverageRelationStatistics Valid=1741, Invalid=24019, Unknown=0, NotChecked=0, Total=25760 [2021-08-21 12:41:53,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21403 states. [2021-08-21 12:41:53,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21403 to 11708. [2021-08-21 12:41:53,703 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) [2021-08-21 12:41:53,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 41905 transitions. [2021-08-21 12:41:53,736 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 41905 transitions. Word has length 47 [2021-08-21 12:41:53,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:41:53,737 INFO L470 AbstractCegarLoop]: Abstraction has 11708 states and 41905 transitions. [2021-08-21 12:41:53,737 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) [2021-08-21 12:41:53,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 41905 transitions. [2021-08-21 12:41:53,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:41:53,758 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:41:53,758 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:41:53,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2021-08-21 12:41:53,758 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:41:53,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:41:53,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1451219203, now seen corresponding path program 234 times [2021-08-21 12:41:53,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:41:53,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446981615] [2021-08-21 12:41:53,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:41:53,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:41:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:41:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:41:54,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:41:54,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446981615] [2021-08-21 12:41:54,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446981615] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:41:54,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:41:54,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:41:54,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127124969] [2021-08-21 12:41:54,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:41:54,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:41:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:41:54,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:41:54,096 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) [2021-08-21 12:42:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:03,463 INFO L93 Difference]: Finished difference Result 24655 states and 88051 transitions. [2021-08-21 12:42:03,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2021-08-21 12:42:03,463 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 [2021-08-21 12:42:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:03,522 INFO L225 Difference]: With dead ends: 24655 [2021-08-21 12:42:03,522 INFO L226 Difference]: Without dead ends: 24445 [2021-08-21 12:42:03,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14334 ImplicationChecksByTransitivity, 6017.7ms TimeCoverageRelationStatistics Valid=2151, Invalid=33381, Unknown=0, NotChecked=0, Total=35532 [2021-08-21 12:42:03,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24445 states. [2021-08-21 12:42:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24445 to 11631. [2021-08-21 12:42:03,787 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) [2021-08-21 12:42:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11631 states to 11631 states and 41665 transitions. [2021-08-21 12:42:03,816 INFO L78 Accepts]: Start accepts. Automaton has 11631 states and 41665 transitions. Word has length 47 [2021-08-21 12:42:03,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:03,817 INFO L470 AbstractCegarLoop]: Abstraction has 11631 states and 41665 transitions. [2021-08-21 12:42:03,817 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) [2021-08-21 12:42:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 11631 states and 41665 transitions. [2021-08-21 12:42:03,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:03,837 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:03,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:03,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2021-08-21 12:42:03,837 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash 120202233, now seen corresponding path program 235 times [2021-08-21 12:42:03,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:03,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806154504] [2021-08-21 12:42:03,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:03,838 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:04,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:04,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:04,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806154504] [2021-08-21 12:42:04,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806154504] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:04,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:04,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:04,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544844390] [2021-08-21 12:42:04,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:04,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:04,172 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) [2021-08-21 12:42:12,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:12,482 INFO L93 Difference]: Finished difference Result 25521 states and 91530 transitions. [2021-08-21 12:42:12,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2021-08-21 12:42:12,482 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 [2021-08-21 12:42:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:12,548 INFO L225 Difference]: With dead ends: 25521 [2021-08-21 12:42:12,549 INFO L226 Difference]: Without dead ends: 24833 [2021-08-21 12:42:12,550 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12097 ImplicationChecksByTransitivity, 5000.5ms TimeCoverageRelationStatistics Valid=1913, Invalid=28537, Unknown=0, NotChecked=0, Total=30450 [2021-08-21 12:42:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24833 states. [2021-08-21 12:42:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24833 to 12061. [2021-08-21 12:42:12,828 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) [2021-08-21 12:42:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 43288 transitions. [2021-08-21 12:42:12,857 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 43288 transitions. Word has length 47 [2021-08-21 12:42:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 12061 states and 43288 transitions. [2021-08-21 12:42:12,857 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) [2021-08-21 12:42:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 43288 transitions. [2021-08-21 12:42:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:12,877 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:12,877 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:12,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2021-08-21 12:42:12,877 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 419093911, now seen corresponding path program 236 times [2021-08-21 12:42:12,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:12,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563768234] [2021-08-21 12:42:12,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:12,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:13,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:13,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:13,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563768234] [2021-08-21 12:42:13,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563768234] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:13,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:13,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:13,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079492781] [2021-08-21 12:42:13,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:13,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:13,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:13,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:13,213 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) [2021-08-21 12:42:20,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:20,878 INFO L93 Difference]: Finished difference Result 25860 states and 92602 transitions. [2021-08-21 12:42:20,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-08-21 12:42:20,878 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 [2021-08-21 12:42:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:20,941 INFO L225 Difference]: With dead ends: 25860 [2021-08-21 12:42:20,941 INFO L226 Difference]: Without dead ends: 25280 [2021-08-21 12:42:20,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11270 ImplicationChecksByTransitivity, 5007.3ms TimeCoverageRelationStatistics Valid=1932, Invalid=26798, Unknown=0, NotChecked=0, Total=28730 [2021-08-21 12:42:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25280 states. [2021-08-21 12:42:21,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25280 to 12784. [2021-08-21 12:42:21,257 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) [2021-08-21 12:42:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12784 states to 12784 states and 46021 transitions. [2021-08-21 12:42:21,293 INFO L78 Accepts]: Start accepts. Automaton has 12784 states and 46021 transitions. Word has length 47 [2021-08-21 12:42:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:21,293 INFO L470 AbstractCegarLoop]: Abstraction has 12784 states and 46021 transitions. [2021-08-21 12:42:21,293 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) [2021-08-21 12:42:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 12784 states and 46021 transitions. [2021-08-21 12:42:21,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:21,318 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:21,318 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:21,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2021-08-21 12:42:21,318 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:21,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:21,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1306326599, now seen corresponding path program 237 times [2021-08-21 12:42:21,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:21,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161269880] [2021-08-21 12:42:21,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:21,319 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:21,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:21,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161269880] [2021-08-21 12:42:21,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161269880] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:21,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:21,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:21,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198120206] [2021-08-21 12:42:21,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:21,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:21,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:21,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:21,554 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) [2021-08-21 12:42:28,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:28,149 INFO L93 Difference]: Finished difference Result 25321 states and 90899 transitions. [2021-08-21 12:42:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-08-21 12:42:28,149 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 [2021-08-21 12:42:28,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:28,217 INFO L225 Difference]: With dead ends: 25321 [2021-08-21 12:42:28,217 INFO L226 Difference]: Without dead ends: 24655 [2021-08-21 12:42:28,219 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9290 ImplicationChecksByTransitivity, 3885.1ms TimeCoverageRelationStatistics Valid=1610, Invalid=22570, Unknown=0, NotChecked=0, Total=24180 [2021-08-21 12:42:28,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24655 states. [2021-08-21 12:42:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24655 to 12777. [2021-08-21 12:42:28,521 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) [2021-08-21 12:42:28,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 45970 transitions. [2021-08-21 12:42:28,554 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 45970 transitions. Word has length 47 [2021-08-21 12:42:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:28,554 INFO L470 AbstractCegarLoop]: Abstraction has 12777 states and 45970 transitions. [2021-08-21 12:42:28,554 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) [2021-08-21 12:42:28,555 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 45970 transitions. [2021-08-21 12:42:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:28,578 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:28,578 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:28,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2021-08-21 12:42:28,578 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:28,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:28,579 INFO L82 PathProgramCache]: Analyzing trace with hash 938152415, now seen corresponding path program 238 times [2021-08-21 12:42:28,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:28,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130294799] [2021-08-21 12:42:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:28,591 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:28,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:28,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:28,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130294799] [2021-08-21 12:42:28,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130294799] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:28,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:28,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:28,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365034573] [2021-08-21 12:42:28,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:28,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:28,963 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) [2021-08-21 12:42:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:37,551 INFO L93 Difference]: Finished difference Result 26145 states and 93369 transitions. [2021-08-21 12:42:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2021-08-21 12:42:37,551 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 [2021-08-21 12:42:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:37,617 INFO L225 Difference]: With dead ends: 26145 [2021-08-21 12:42:37,618 INFO L226 Difference]: Without dead ends: 25741 [2021-08-21 12:42:37,619 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11310 ImplicationChecksByTransitivity, 5319.0ms TimeCoverageRelationStatistics Valid=1955, Invalid=26775, Unknown=0, NotChecked=0, Total=28730 [2021-08-21 12:42:37,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25741 states. [2021-08-21 12:42:37,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25741 to 13143. [2021-08-21 12:42:37,910 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) [2021-08-21 12:42:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13143 states to 13143 states and 47370 transitions. [2021-08-21 12:42:37,945 INFO L78 Accepts]: Start accepts. Automaton has 13143 states and 47370 transitions. Word has length 47 [2021-08-21 12:42:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:37,945 INFO L470 AbstractCegarLoop]: Abstraction has 13143 states and 47370 transitions. [2021-08-21 12:42:37,945 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) [2021-08-21 12:42:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13143 states and 47370 transitions. [2021-08-21 12:42:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:37,972 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:37,972 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:37,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2021-08-21 12:42:37,972 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:37,972 INFO L82 PathProgramCache]: Analyzing trace with hash 1104337533, now seen corresponding path program 239 times [2021-08-21 12:42:37,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:37,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343239749] [2021-08-21 12:42:37,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:37,973 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:38,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:38,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:38,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343239749] [2021-08-21 12:42:38,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343239749] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:38,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:38,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:38,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455976876] [2021-08-21 12:42:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:38,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:38,299 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) [2021-08-21 12:42:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:46,727 INFO L93 Difference]: Finished difference Result 27580 states and 98708 transitions. [2021-08-21 12:42:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-08-21 12:42:46,727 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 [2021-08-21 12:42:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:46,798 INFO L225 Difference]: With dead ends: 27580 [2021-08-21 12:42:46,798 INFO L226 Difference]: Without dead ends: 27369 [2021-08-21 12:42:46,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11304 ImplicationChecksByTransitivity, 5231.8ms TimeCoverageRelationStatistics Valid=1882, Invalid=26848, Unknown=0, NotChecked=0, Total=28730 [2021-08-21 12:42:46,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27369 states. [2021-08-21 12:42:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27369 to 13182. [2021-08-21 12:42:47,105 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) [2021-08-21 12:42:47,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13182 states to 13182 states and 47497 transitions. [2021-08-21 12:42:47,138 INFO L78 Accepts]: Start accepts. Automaton has 13182 states and 47497 transitions. Word has length 47 [2021-08-21 12:42:47,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:47,138 INFO L470 AbstractCegarLoop]: Abstraction has 13182 states and 47497 transitions. [2021-08-21 12:42:47,139 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) [2021-08-21 12:42:47,139 INFO L276 IsEmpty]: Start isEmpty. Operand 13182 states and 47497 transitions. [2021-08-21 12:42:47,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:47,162 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:47,162 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:47,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2021-08-21 12:42:47,162 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1938367623, now seen corresponding path program 240 times [2021-08-21 12:42:47,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:47,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321486027] [2021-08-21 12:42:47,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:47,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:47,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:47,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:47,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:47,592 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321486027] [2021-08-21 12:42:47,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321486027] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:47,592 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:47,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:47,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074430049] [2021-08-21 12:42:47,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:47,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:47,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:47,593 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) [2021-08-21 12:42:55,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:42:55,239 INFO L93 Difference]: Finished difference Result 26505 states and 95211 transitions. [2021-08-21 12:42:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2021-08-21 12:42:55,240 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 [2021-08-21 12:42:55,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:42:55,308 INFO L225 Difference]: With dead ends: 26505 [2021-08-21 12:42:55,309 INFO L226 Difference]: Without dead ends: 26289 [2021-08-21 12:42:55,310 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8349 ImplicationChecksByTransitivity, 4543.2ms TimeCoverageRelationStatistics Valid=1546, Invalid=20506, Unknown=0, NotChecked=0, Total=22052 [2021-08-21 12:42:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26289 states. [2021-08-21 12:42:55,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26289 to 13159. [2021-08-21 12:42:55,619 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) [2021-08-21 12:42:55,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13159 states to 13159 states and 47425 transitions. [2021-08-21 12:42:55,654 INFO L78 Accepts]: Start accepts. Automaton has 13159 states and 47425 transitions. Word has length 47 [2021-08-21 12:42:55,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:42:55,654 INFO L470 AbstractCegarLoop]: Abstraction has 13159 states and 47425 transitions. [2021-08-21 12:42:55,654 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) [2021-08-21 12:42:55,654 INFO L276 IsEmpty]: Start isEmpty. Operand 13159 states and 47425 transitions. [2021-08-21 12:42:55,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:42:55,679 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:42:55,679 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:42:55,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2021-08-21 12:42:55,679 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:42:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:42:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash -2004430181, now seen corresponding path program 241 times [2021-08-21 12:42:55,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:42:55,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345985181] [2021-08-21 12:42:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:42:55,680 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:42:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:42:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:42:56,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:42:56,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345985181] [2021-08-21 12:42:56,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345985181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:42:56,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:42:56,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:42:56,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545507851] [2021-08-21 12:42:56,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:42:56,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:42:56,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:42:56,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:42:56,017 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) [2021-08-21 12:43:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:03,785 INFO L93 Difference]: Finished difference Result 28288 states and 101489 transitions. [2021-08-21 12:43:03,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2021-08-21 12:43:03,785 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 [2021-08-21 12:43:03,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:03,858 INFO L225 Difference]: With dead ends: 28288 [2021-08-21 12:43:03,858 INFO L226 Difference]: Without dead ends: 27918 [2021-08-21 12:43:03,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9192 ImplicationChecksByTransitivity, 4475.0ms TimeCoverageRelationStatistics Valid=1582, Invalid=22288, Unknown=0, NotChecked=0, Total=23870 [2021-08-21 12:43:03,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27918 states. [2021-08-21 12:43:04,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27918 to 13174. [2021-08-21 12:43:04,190 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) [2021-08-21 12:43:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13174 states to 13174 states and 47482 transitions. [2021-08-21 12:43:04,224 INFO L78 Accepts]: Start accepts. Automaton has 13174 states and 47482 transitions. Word has length 47 [2021-08-21 12:43:04,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:04,225 INFO L470 AbstractCegarLoop]: Abstraction has 13174 states and 47482 transitions. [2021-08-21 12:43:04,225 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) [2021-08-21 12:43:04,225 INFO L276 IsEmpty]: Start isEmpty. Operand 13174 states and 47482 transitions. [2021-08-21 12:43:04,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:04,251 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:04,251 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:04,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2021-08-21 12:43:04,251 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:04,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:04,251 INFO L82 PathProgramCache]: Analyzing trace with hash -117149575, now seen corresponding path program 242 times [2021-08-21 12:43:04,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:04,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187983980] [2021-08-21 12:43:04,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:04,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:04,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:04,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:04,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187983980] [2021-08-21 12:43:04,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187983980] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:04,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:04,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:43:04,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672029681] [2021-08-21 12:43:04,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:43:04,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:04,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:43:04,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:43:04,625 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) [2021-08-21 12:43:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:11,815 INFO L93 Difference]: Finished difference Result 27086 states and 96712 transitions. [2021-08-21 12:43:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2021-08-21 12:43:11,815 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 [2021-08-21 12:43:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:11,882 INFO L225 Difference]: With dead ends: 27086 [2021-08-21 12:43:11,882 INFO L226 Difference]: Without dead ends: 26626 [2021-08-21 12:43:11,885 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11866 ImplicationChecksByTransitivity, 4579.9ms TimeCoverageRelationStatistics Valid=2028, Invalid=28074, Unknown=0, NotChecked=0, Total=30102 [2021-08-21 12:43:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26626 states. [2021-08-21 12:43:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26626 to 13520. [2021-08-21 12:43:12,210 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) [2021-08-21 12:43:12,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13520 states to 13520 states and 48766 transitions. [2021-08-21 12:43:12,245 INFO L78 Accepts]: Start accepts. Automaton has 13520 states and 48766 transitions. Word has length 47 [2021-08-21 12:43:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:12,245 INFO L470 AbstractCegarLoop]: Abstraction has 13520 states and 48766 transitions. [2021-08-21 12:43:12,246 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) [2021-08-21 12:43:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 13520 states and 48766 transitions. [2021-08-21 12:43:12,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:12,271 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:12,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:12,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2021-08-21 12:43:12,271 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:12,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1842570085, now seen corresponding path program 243 times [2021-08-21 12:43:12,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:12,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769122768] [2021-08-21 12:43:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:12,272 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:12,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:12,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769122768] [2021-08-21 12:43:12,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769122768] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:12,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:12,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:43:12,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84322404] [2021-08-21 12:43:12,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:43:12,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:12,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:43:12,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:43:12,597 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) [2021-08-21 12:43:18,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:18,666 INFO L93 Difference]: Finished difference Result 28937 states and 103320 transitions. [2021-08-21 12:43:18,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2021-08-21 12:43:18,666 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 [2021-08-21 12:43:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:18,739 INFO L225 Difference]: With dead ends: 28937 [2021-08-21 12:43:18,739 INFO L226 Difference]: Without dead ends: 28321 [2021-08-21 12:43:18,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13400 ImplicationChecksByTransitivity, 3872.3ms TimeCoverageRelationStatistics Valid=2101, Invalid=31571, Unknown=0, NotChecked=0, Total=33672 [2021-08-21 12:43:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28321 states. [2021-08-21 12:43:19,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28321 to 13824. [2021-08-21 12:43:19,237 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) [2021-08-21 12:43:19,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13824 states to 13824 states and 49956 transitions. [2021-08-21 12:43:19,273 INFO L78 Accepts]: Start accepts. Automaton has 13824 states and 49956 transitions. Word has length 47 [2021-08-21 12:43:19,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:19,273 INFO L470 AbstractCegarLoop]: Abstraction has 13824 states and 49956 transitions. [2021-08-21 12:43:19,273 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) [2021-08-21 12:43:19,273 INFO L276 IsEmpty]: Start isEmpty. Operand 13824 states and 49956 transitions. [2021-08-21 12:43:19,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:19,299 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:19,299 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:19,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2021-08-21 12:43:19,299 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:19,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:19,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1470269211, now seen corresponding path program 244 times [2021-08-21 12:43:19,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:19,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888928731] [2021-08-21 12:43:19,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:19,300 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:19,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:19,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:19,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888928731] [2021-08-21 12:43:19,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888928731] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:19,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:19,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:43:19,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787615381] [2021-08-21 12:43:19,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:43:19,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:19,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:43:19,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:43:19,574 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) [2021-08-21 12:43:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:21,108 INFO L93 Difference]: Finished difference Result 16177 states and 58179 transitions. [2021-08-21 12:43:21,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-21 12:43:21,108 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 [2021-08-21 12:43:21,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:21,147 INFO L225 Difference]: With dead ends: 16177 [2021-08-21 12:43:21,148 INFO L226 Difference]: Without dead ends: 15887 [2021-08-21 12:43:21,148 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 822.5ms TimeCoverageRelationStatistics Valid=229, Invalid=2027, Unknown=0, NotChecked=0, Total=2256 [2021-08-21 12:43:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15887 states. [2021-08-21 12:43:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15887 to 13906. [2021-08-21 12:43:21,383 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) [2021-08-21 12:43:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13906 states to 13906 states and 50212 transitions. [2021-08-21 12:43:21,421 INFO L78 Accepts]: Start accepts. Automaton has 13906 states and 50212 transitions. Word has length 47 [2021-08-21 12:43:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:21,421 INFO L470 AbstractCegarLoop]: Abstraction has 13906 states and 50212 transitions. [2021-08-21 12:43:21,421 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) [2021-08-21 12:43:21,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13906 states and 50212 transitions. [2021-08-21 12:43:21,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:21,449 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:21,449 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:21,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2021-08-21 12:43:21,449 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:21,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:21,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1473949481, now seen corresponding path program 245 times [2021-08-21 12:43:21,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:21,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285104583] [2021-08-21 12:43:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:21,451 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:21,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:21,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285104583] [2021-08-21 12:43:21,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285104583] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:21,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:21,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:43:21,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342870861] [2021-08-21 12:43:21,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:43:21,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:43:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:43:21,759 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) [2021-08-21 12:43:25,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:25,201 INFO L93 Difference]: Finished difference Result 19142 states and 69242 transitions. [2021-08-21 12:43:25,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-08-21 12:43:25,201 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 [2021-08-21 12:43:25,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:25,247 INFO L225 Difference]: With dead ends: 19142 [2021-08-21 12:43:25,247 INFO L226 Difference]: Without dead ends: 18890 [2021-08-21 12:43:25,248 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 1864.3ms TimeCoverageRelationStatistics Valid=520, Invalid=4736, Unknown=0, NotChecked=0, Total=5256 [2021-08-21 12:43:25,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18890 states. [2021-08-21 12:43:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18890 to 14354. [2021-08-21 12:43:25,504 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) [2021-08-21 12:43:25,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14354 states to 14354 states and 51852 transitions. [2021-08-21 12:43:25,542 INFO L78 Accepts]: Start accepts. Automaton has 14354 states and 51852 transitions. Word has length 47 [2021-08-21 12:43:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:25,542 INFO L470 AbstractCegarLoop]: Abstraction has 14354 states and 51852 transitions. [2021-08-21 12:43:25,542 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) [2021-08-21 12:43:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 14354 states and 51852 transitions. [2021-08-21 12:43:25,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:25,568 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:25,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:25,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2021-08-21 12:43:25,568 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:25,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:25,568 INFO L82 PathProgramCache]: Analyzing trace with hash 623297573, now seen corresponding path program 246 times [2021-08-21 12:43:25,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:25,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357537131] [2021-08-21 12:43:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:25,569 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:25,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:25,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:25,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357537131] [2021-08-21 12:43:25,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357537131] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:25,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:25,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:43:25,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111812818] [2021-08-21 12:43:25,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:43:25,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:25,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:43:25,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:43:25,871 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) [2021-08-21 12:43:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:29,237 INFO L93 Difference]: Finished difference Result 19964 states and 72371 transitions. [2021-08-21 12:43:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-08-21 12:43:29,238 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 [2021-08-21 12:43:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:29,286 INFO L225 Difference]: With dead ends: 19964 [2021-08-21 12:43:29,286 INFO L226 Difference]: Without dead ends: 19698 [2021-08-21 12:43:29,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 1815.3ms TimeCoverageRelationStatistics Valid=590, Invalid=6216, Unknown=0, NotChecked=0, Total=6806 [2021-08-21 12:43:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2021-08-21 12:43:29,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 14432. [2021-08-21 12:43:29,549 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) [2021-08-21 12:43:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14432 states to 14432 states and 52122 transitions. [2021-08-21 12:43:29,588 INFO L78 Accepts]: Start accepts. Automaton has 14432 states and 52122 transitions. Word has length 47 [2021-08-21 12:43:29,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:29,588 INFO L470 AbstractCegarLoop]: Abstraction has 14432 states and 52122 transitions. [2021-08-21 12:43:29,588 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) [2021-08-21 12:43:29,588 INFO L276 IsEmpty]: Start isEmpty. Operand 14432 states and 52122 transitions. [2021-08-21 12:43:29,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:29,716 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:29,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:29,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2021-08-21 12:43:29,716 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:29,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:29,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1495862171, now seen corresponding path program 247 times [2021-08-21 12:43:29,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:29,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563977981] [2021-08-21 12:43:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:29,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:30,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:30,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563977981] [2021-08-21 12:43:30,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563977981] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:30,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:30,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-08-21 12:43:30,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551576838] [2021-08-21 12:43:30,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-21 12:43:30,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:30,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-21 12:43:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-08-21 12:43:30,012 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) [2021-08-21 12:43:32,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:32,744 INFO L93 Difference]: Finished difference Result 17259 states and 61929 transitions. [2021-08-21 12:43:32,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-08-21 12:43:32,745 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 [2021-08-21 12:43:32,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:32,787 INFO L225 Difference]: With dead ends: 17259 [2021-08-21 12:43:32,787 INFO L226 Difference]: Without dead ends: 16959 [2021-08-21 12:43:32,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 972 ImplicationChecksByTransitivity, 1569.1ms TimeCoverageRelationStatistics Valid=392, Invalid=3148, Unknown=0, NotChecked=0, Total=3540 [2021-08-21 12:43:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16959 states. [2021-08-21 12:43:33,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16959 to 14604. [2021-08-21 12:43:33,052 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) [2021-08-21 12:43:33,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14604 states to 14604 states and 52683 transitions. [2021-08-21 12:43:33,088 INFO L78 Accepts]: Start accepts. Automaton has 14604 states and 52683 transitions. Word has length 47 [2021-08-21 12:43:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:33,089 INFO L470 AbstractCegarLoop]: Abstraction has 14604 states and 52683 transitions. [2021-08-21 12:43:33,089 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) [2021-08-21 12:43:33,089 INFO L276 IsEmpty]: Start isEmpty. Operand 14604 states and 52683 transitions. [2021-08-21 12:43:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:33,114 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:33,114 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:33,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2021-08-21 12:43:33,115 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:33,115 INFO L82 PathProgramCache]: Analyzing trace with hash 820230663, now seen corresponding path program 248 times [2021-08-21 12:43:33,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:33,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939237031] [2021-08-21 12:43:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:33,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:33,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:33,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:33,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939237031] [2021-08-21 12:43:33,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939237031] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:33,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:33,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:43:33,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450435297] [2021-08-21 12:43:33,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:43:33,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:33,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:43:33,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:43:33,420 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) [2021-08-21 12:43:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:37,206 INFO L93 Difference]: Finished difference Result 20227 states and 73158 transitions. [2021-08-21 12:43:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-08-21 12:43:37,207 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 [2021-08-21 12:43:37,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:37,255 INFO L225 Difference]: With dead ends: 20227 [2021-08-21 12:43:37,256 INFO L226 Difference]: Without dead ends: 19927 [2021-08-21 12:43:37,256 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 2202.9ms TimeCoverageRelationStatistics Valid=590, Invalid=5416, Unknown=0, NotChecked=0, Total=6006 [2021-08-21 12:43:37,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19927 states. [2021-08-21 12:43:37,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19927 to 14998. [2021-08-21 12:43:37,516 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) [2021-08-21 12:43:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14998 states to 14998 states and 54280 transitions. [2021-08-21 12:43:37,555 INFO L78 Accepts]: Start accepts. Automaton has 14998 states and 54280 transitions. Word has length 47 [2021-08-21 12:43:37,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:37,555 INFO L470 AbstractCegarLoop]: Abstraction has 14998 states and 54280 transitions. [2021-08-21 12:43:37,555 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) [2021-08-21 12:43:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 14998 states and 54280 transitions. [2021-08-21 12:43:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:37,709 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:37,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:37,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2021-08-21 12:43:37,710 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:37,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash -30421245, now seen corresponding path program 249 times [2021-08-21 12:43:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:37,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23693412] [2021-08-21 12:43:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:37,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:38,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:38,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23693412] [2021-08-21 12:43:38,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23693412] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:38,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:38,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-08-21 12:43:38,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850503846] [2021-08-21 12:43:38,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-21 12:43:38,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:38,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-21 12:43:38,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2021-08-21 12:43:38,014 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) [2021-08-21 12:43:41,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:41,800 INFO L93 Difference]: Finished difference Result 20876 states and 75872 transitions. [2021-08-21 12:43:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-08-21 12:43:41,801 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 [2021-08-21 12:43:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:41,851 INFO L225 Difference]: With dead ends: 20876 [2021-08-21 12:43:41,852 INFO L226 Difference]: Without dead ends: 20582 [2021-08-21 12:43:41,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 2118.4ms TimeCoverageRelationStatistics Valid=588, Invalid=5892, Unknown=0, NotChecked=0, Total=6480 [2021-08-21 12:43:41,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20582 states. [2021-08-21 12:43:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20582 to 14924. [2021-08-21 12:43:42,249 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) [2021-08-21 12:43:42,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14924 states to 14924 states and 54034 transitions. [2021-08-21 12:43:42,287 INFO L78 Accepts]: Start accepts. Automaton has 14924 states and 54034 transitions. Word has length 47 [2021-08-21 12:43:42,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:42,287 INFO L470 AbstractCegarLoop]: Abstraction has 14924 states and 54034 transitions. [2021-08-21 12:43:42,287 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) [2021-08-21 12:43:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 14924 states and 54034 transitions. [2021-08-21 12:43:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:42,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:42,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:42,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2021-08-21 12:43:42,315 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash 392424199, now seen corresponding path program 250 times [2021-08-21 12:43:42,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:42,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697235610] [2021-08-21 12:43:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:42,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:42,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:42,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697235610] [2021-08-21 12:43:42,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697235610] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:42,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:42,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:43:42,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982176025] [2021-08-21 12:43:42,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:43:42,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:43:42,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:43:42,648 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) [2021-08-21 12:43:44,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-21 12:43:44,515 INFO L93 Difference]: Finished difference Result 17205 states and 61974 transitions. [2021-08-21 12:43:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-08-21 12:43:44,515 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 [2021-08-21 12:43:44,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-21 12:43:44,557 INFO L225 Difference]: With dead ends: 17205 [2021-08-21 12:43:44,557 INFO L226 Difference]: Without dead ends: 17078 [2021-08-21 12:43:44,558 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 1033.8ms TimeCoverageRelationStatistics Valid=262, Invalid=2494, Unknown=0, NotChecked=0, Total=2756 [2021-08-21 12:43:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17078 states. [2021-08-21 12:43:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17078 to 14936. [2021-08-21 12:43:44,807 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) [2021-08-21 12:43:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14936 states to 14936 states and 54064 transitions. [2021-08-21 12:43:44,846 INFO L78 Accepts]: Start accepts. Automaton has 14936 states and 54064 transitions. Word has length 47 [2021-08-21 12:43:44,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-21 12:43:44,846 INFO L470 AbstractCegarLoop]: Abstraction has 14936 states and 54064 transitions. [2021-08-21 12:43:44,846 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) [2021-08-21 12:43:44,846 INFO L276 IsEmpty]: Start isEmpty. Operand 14936 states and 54064 transitions. [2021-08-21 12:43:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-21 12:43:44,874 INFO L504 BasicCegarLoop]: Found error trace [2021-08-21 12:43:44,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-21 12:43:44,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2021-08-21 12:43:44,874 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0INUSE_VIOLATION, thread1Err1INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2INUSE_VIOLATION (and 7 more)] === [2021-08-21 12:43:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-21 12:43:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash -958324405, now seen corresponding path program 251 times [2021-08-21 12:43:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-21 12:43:44,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665986128] [2021-08-21 12:43:44,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-21 12:43:44,875 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-21 12:43:44,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-21 12:43:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-21 12:43:45,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-21 12:43:45,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665986128] [2021-08-21 12:43:45,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665986128] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-21 12:43:45,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-21 12:43:45,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-08-21 12:43:45,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087202703] [2021-08-21 12:43:45,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-21 12:43:45,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-21 12:43:45,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-21 12:43:45,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2021-08-21 12:43:45,305 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) Received shutdown request... [2021-08-21 12:43:47,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-08-21 12:43:47,599 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-21 12:43:47,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2021-08-21 12:43:47,599 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 known predicates. [2021-08-21 12:43:47,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0INUSE_VIOLATION [2021-08-21 12:43:47,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err7INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err9INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err3INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork2Err4INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err5INUSE_VIOLATION [2021-08-21 12:43:47,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Thread1of1ForFork4Err6INUSE_VIOLATION [2021-08-21 12:43:47,609 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-21 12:43:47,609 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-21 12:43:47,610 INFO L202 PluginConnector]: Adding new model barrier.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 12:43:47 BasicIcfg [2021-08-21 12:43:47,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-21 12:43:47,611 INFO L168 Benchmark]: Toolchain (without parser) took 857637.66 ms. Allocated memory was 216.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 196.6 MB in the beginning and 729.2 MB in the end (delta: -532.6 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-08-21 12:43:47,611 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 216.0 MB. Free memory is still 197.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-21 12:43:47,611 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 216.0 MB. Free memory was 196.4 MB in the beginning and 194.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-08-21 12:43:47,611 INFO L168 Benchmark]: Boogie Preprocessor took 19.71 ms. Allocated memory is still 216.0 MB. Free memory was 194.9 MB in the beginning and 193.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-21 12:43:47,611 INFO L168 Benchmark]: RCFGBuilder took 330.32 ms. Allocated memory is still 216.0 MB. Free memory was 193.9 MB in the beginning and 179.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-08-21 12:43:47,612 INFO L168 Benchmark]: TraceAbstraction took 857260.74 ms. Allocated memory was 216.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 179.0 MB in the beginning and 729.2 MB in the end (delta: -550.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. [2021-08-21 12:43:47,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2021-08-21 12:43:47,625 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 216.0 MB. Free memory is still 197.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 216.0 MB. Free memory was 196.4 MB in the beginning and 194.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.71 ms. Allocated memory is still 216.0 MB. Free memory was 194.9 MB in the beginning and 193.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 330.32 ms. Allocated memory is still 216.0 MB. Free memory was 193.9 MB in the beginning and 179.4 MB in the end (delta: 14.5 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 857260.74 ms. Allocated memory was 216.0 MB in the beginning and 1.9 GB in the end (delta: 1.7 GB). Free memory was 179.0 MB in the beginning and 729.2 MB in the end (delta: -550.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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 (14936states) and FLOYD_HOARE automaton (currently 63 states, 18 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 67 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: 857037.2ms, OverallIterations: 251, TraceHistogramMax: 1, EmptinessCheckTime: 3551.6ms, AutomataDifference: 731594.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 325.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83195 SDtfs, 168387 SDslu, 925649 SDs, 0 SdLazy, 691229 SolverSat, 27508 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 253678.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18606 GetRequests, 286 SyntacticMatches, 556 SemanticMatches, 17763 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558482 ImplicationChecksByTransitivity, 429285.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14998occurred in iteration=248, InterpolantAutomatonStates: 16672, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 38216.9ms AutomataMinimizationTime, 250 MinimizatonAttempts, 895189 StatesRemovedByMinimization, 248 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 189.8ms SsaConstructionTime, 577.4ms SatisfiabilityAnalysisTime, 81011.2ms InterpolantComputationTime, 11797 NumberOfCodeBlocks, 11797 NumberOfCodeBlocksAsserted, 251 NumberOfCheckSat, 11546 ConstructedInterpolants, 0 QuantifiedInterpolants, 149161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 251 InterpolantComputations, 251 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